Walla Walla Resource Library
Measuring stream flows
Key Walla Walla Water 2050 Documents
- Photos
- Presentations
- Brochures, Handouts
- Confederated Tribes of the Umatilla Indian Reservation Department of Natural Resources
- Oregon Department of Fish and Wildlife
- Oregon Water Resources Department
- NOAA
- NRCS
- Salmon Recovery Funding Board
- Snake River Salmon Recovery Board
- Tri-State Steelheaders
- USGS
- U.S. Army Corps of Engineers
- Walla Walla Water 2050 EZview (Workgroup meetings, presentations, etc)
- Walla Walla Water 2050 Water Management Plan (Ecology)
- Walla Walla Basin Watershed Council
- Walla Walla Watershed Management Partnership (link expired)
- Washington Deptartment of Ecology
- Washington Department of Fish and Wildlife
- Fish
- Instream Fish Atlas - Full Atlas -
Online Maps - WDFW Priority Habitats and Species PHS
- WDFW SalmonScape
- Instream Fish Atlas - Full Atlas -
- Floodplains Risk Maps WA
- Geology Data - Oregon - Washington
- Geospatial Data - Oregon - Washington
- Groundwater Data - Oregon - Washington
- NOAA National Centers for Environmental Information
- Publications - Ecology - OWRD - USGS
- Snake River SRB Habitat Work Schedule
- Surface Water Streamflows- Oregon - Washington
- USGS Data and Tools
- USGS Water Mapper
- WA Environmental Information Management System (EIM)
- Water Rights - Oregon - Washington
- Water Rights Mapper - Oregon - Washington
- Well Logs - Oregon - Washington
- Weather
- Snow Water Equivelant (SNOTEL) - Oregon - Washington
- WSU AgWeatherNet
- USBR AgriMet
Walla Walla Basin Studies and Reports
| Title/Author | Description | Year | |
|---|---|---|---|
| Walla Walla River Basin pH and Dissolved Oxygen Total Maximum Daily Load: Water Quality Improvement Report WA Dept. of Ecology | Ecology found pH and dissolved oxygen (DO) problems in the basin from May through October in the Walla Walla River and several tributaries. Excessive nutrients from point and nonpoint sources, low streamflow, and exposure to the sun cause excessive primary productivity. This report includes recommendations for improvement and load and wasteload allocations to reduce nutrients. | 2007 | |
| List of References regarding early Columbia River Basin History | A list of references regarding early Columbia River Basin history in reference to salmon issues. The list dates back to the 1800s and does not link to the reports listed. | N/A | |
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United States Commission of Fish and Fisheries, Part 4, Report of the Commissioner for 1875-1876 Marshall McDonald |
A report from the US Commission of Fish and Fisheries regarding the salmon fisheries of the Columbia River in the late-1800s. It is an inquiry into the decrease of the food fishes and the propagation of food fishes in the Columbia River at that time. | 1878 | |
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Walla Walla Basin Integrated Flow Enhancement Study (2017) Aspect Consulting |
A report that outlines strategies to meet instream flow objectives while preserving existing diversionary requirements. | 2017 | |
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Walla Walla River Metering and Flow Telemetry Assessment Walla Walla Basin Watershed Council |
To manage the water resources in the Walla Walla River in real-time, gaps in metering or surface flow monitoring needs to be addressed. This assessment describes 13 sites that have been identified for inclusion in a local monitoring network. | 2017 | |
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Snake River Salmon Recovery Plan for SE Washington Snake River Salmon Recovery Board |
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2011 | |
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Columbia Basin Partnership and NOAA |
This phase 1 report provides agreed upon goals to restore salmon and steelhead to the Columbia River Basin, including goals above ESA recovery levels to healthy and harvestable numbers. The Columbia Basin Partnership (CBP) Task Force was convened in 2017 by NOAA Fisheries' Marine Fisheries Advisory Committee to develop shared goals and a comprehensive vision for the future of Columbia Basin salmon and steelhead. | 2019 | |
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Mill Creek Fish Passage Assessment Final Report Tri-State Steelheaders, Waterfall Engineering and Chinook Engineering, and Mill Creek Working Group |
This report includes a detailed fish passage assessment through the Mill Creek Channel and develops conceptual designs for fish passage improvement. These conceptual designs have been further developed into final construction ready designs on a project by project basis that can be found in the Washington State Recreation and Conservatoin Office's PRISM contract database and the Snake River Salmon Recovery Board's habitat work schedule database. | 2009 | |
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Lower Mill Creek Final Habitat and Passage Assessment and Strategic Action Plan Tetra Tech and CTUIR |
Assessment and associated strategic actin plan assessing existing conditions in the Mill Creek Watershed with the purpose of improving conditions for fish while maintaining or improving flood control. | 2017 | |
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Walla Walla Bi-State Flow Study - 2019 Flow Study Update Aspect Consulting |
The 2019 update to the Bi-State flow study. This second phase of the Flow Study builds upon over a decade of work by multiple basin stakeholders. It builds on the 2017 Flow Study. | 2019 | |
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Walla Walla Pilot Local Water Management Program Final Progress Report, October 2018 Walla Walla Watershed Management Partnership and WA Department of Ecology |
The 2018 Report to the Legislature from the Partnership in collaboration with Ecology. This report details what has worked, what hasn't, and what needs to change to meet the complex problems of water managemnet in the Walla Walla Basin. This report follows up on previous reports to the legislature in 2012 and 2015. | 2018 | |
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FAQ - The amended WRIA 32 Water Resources Program Rule, Chapter 173-532 WAC WA Department of Ecology |
An FAQ regarding the Department of Ecology's update to the WRIA 32 instream flow rule, Chapter 173-532 WAC. The updated rule from 2007 replaces the older instream flow rule from 1977, and only affects the Washington side of the border. This document describes some of the changes and generally how the instream flow rule affects water management on the Walla Walla River on the Washington side. | 2007 | |
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Walla Walla Watershed Plan, Planning Unit Final, May 2005 HDR/EES Inc |
The Watershed Plan was prepared under the provisions of the Watershed Planning Program, by the Walla Walla Planning unit. The plan identifies management challenges and actions for improving water resource management in the Walla Walla basin and recommends an implementation plan. | 2005 | |
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USGS |
This report summarizes a series of reports published as part of the groundwater availability analysis of the CPRAS. The USGS conducted a study of the CPRAS to characterize the hydrologic status of the system, identify trends in groundwater storage and use, and quantify groundwater availability. This report presents the hydrogeologic units and their characteristics, a numerical model of groundwater flow, and water budgets. | 2015 | |
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USGS |
SIR 2014-5127 presents the results from a three-dimensional numerical model of groundwater flow constructed for the Columbia Plateau Regional Aquifer System (CPRAS), Idaho, Oregon, and Washington, to evaluate and test the conceptual model of the system, to provide an improved understanding of the groundwater-flow system, and to evaluate groundwater availability. The model was developed as a tool for water-resource managers and other stakeholders to quantitatively evaluate proposed alternative management strategies and assess the long-term availability of groundwater. The study area includes parts of Washington, Oregon, and Idaho, encompassing the entire Walla Walla Basin. | 2014 | |
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USGS
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The purpose of this report is to describe the compilation of groundwater-level data for the Columbia Plateau Regional Aquifer System (CPRAS) that will be used for comparison with a numerical groundwater-flow model and to evaluate the status and trends in the data and their relation to hydrogeologic controls that influence the hydraulic properties of the aquifer or hydraulic stresses from recharge or pumping. The scope of this report includes a regional assessment of the importance of these controls described through the presentation of maps of groundwater elevations, water-level changes, stresses, and hydrogeologic features in the CPRAS. The study area includes parts of Washington, Oregon, and Idaho, encompassing the entire Walla Walla Basin. | 2012 | |
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USGS |
The purpose of SIR 2010-5246 was to update the geologic framework for the Columbia Plateau Regional Aquifer System (CPRAS) by developing a digital, three-dimensional geologic model using available geologic mapping and well information. The model is intended to be used as the geologic foundation for a hydrogeologic model that will be used as input to a groundwater flow model for the CPRAS to assess groundwater availability. This report describes the process used to generate the digital geologic model, as well as summarizes the resulting datasets. The study area includes parts of Washington, Oregon, and Idaho, encompassing the entire Walla Walla Basin. | 2011 | |
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USGS |
SIR 2011-5124 describes the hydrogeologic framework and selected hydrologic budget components of the Columbia Plateau Regional Aquifer System (CPRAS) developed for use in the numerical groundwater-flow model, based on historical and new investigation and methods. The scope of this report includes the regional geologic history; sediment and basalt stratigraphy; hydrogeologic units; hydraulic characteristics; and groundwater occurrence, movement, and approximate age. Additionally, selected hydrologic budget components of the CPRAS include estimates of recharge from infiltration of precipitation, irrigation water use and associated recharge, results from a monthly soil-water balance model, and estimates of non-irrigation water use. The study area includes parts of Washington, Oregon, and Idaho, encompassing the entire Walla Walla Basin | 2011 | |
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USGS |
SIR 2010-5040 characterizes groundwater conditions for the year 2009 within each of the primary basalt aquifers and evaluates changes in groundwater levels since the prior regional synoptic measurement in 1984 (Whiteman, 1986; Vaccaro, 1999) through the presentation of maps of groundwater elevation and water-level change for the hydrogeologic units in the CPRAS. Regional assessment of water-level data from the CPRAS is necessary to document regional water-level conditions and to develop a broad view of the effects of groundwater development and management in the sustainability and availability of water supply in the region. This information is useful to delineate areas of water-level changes due to withdrawals, irrigation recharge, or climate and to identify areas with substantial data gaps that may preclude effective management of groundwater resources | 2010 | |
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USGS |
The objectives of SIM 3088 were to update the hydrogeologic framework for the Columbia Plateau Regional Aquifier System (CPRAS) using the available geologic mapping and well information and to develop a digital, three-dimensional hydrogeologic model that could be used as the basis of a groundwater-flow model. This report describes the principal geologic and hydrogeologic units of the CPRAS and geologic map and well data that were compiled as part of the study. The report also describes simplified regional hydrogeologic sections and unit extent maps that were used to conceptualize the framework prior to development of the digital 3-dimensional framework model. | 2009 | |
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Hydrology of the Columbia Plateau Regional Aquifer System, Washington, Oregon, and Idaho USGS |
This report is part of the USGS Regional Aquifer-System Analysis (RASA) program study of the Columbia Plateau which covers parts of Washington, Oregon, and Idaho. A five-layer, numerical finite-difference groundwater model covering 32,688 square miles was used to simulate the regional ground-water flow system; this report summarizes the results of those simulations. | 2000 | |
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Summary of the Columbia Plateau Regional Aquifer-System Analysis, Washington, Oregon, and Idaho USGS |
PP 1413A summarizes the results of the U.S. Geological Survey's Regional Aquifer-System Analysis (RASA) program study of the Columbia Plateau RASA that covers parts of Washington, Oregon, and Idaho. The report describes the geologic framework, hydraulic characteristics, ground-water movement, and water budget components. It summarizes the construction and use of a numerical ground-water flow model, informing a discussion of the effects of potential water-development practices. Additionally, the ground-water quality and geochemistry of the aquifer system are discussed. | 1999 | |
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USGS |
The data report presents ground-water information collected and analyzed as part of the U.S. Geological Survey's Columbia Plateau Regional Aquifer-System Analysis Program. The information was gathered from July 1982 through September 1985 in the part of the aquifer system located in central and eastern Washington and north-central and northeastern Oregon. The report consists of three volumes: volume I, geohydrology; volume II, water levels; and volume III, ground-water quality. This volume, III, presents ground-water quality data gathered from about 570 wells during the study | 1994 | |
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Ground-water geochemistry of the Columbia Plateau aquifer system, Washington, Oregon, and Idaho USGS |
This report describes the spatial variations in water chemistry in the Columbia Plateau aquifer system and discusses plausible reasons for the variations. The variations were determined by examining analyses of ground waters from wells in the plateau that are completed in the basalt aquifers. | 1996 | |
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USGS |
This report presents the numerical finite-difference groundwater model developed for the Columbia Plateau regional aquifer system. It discusses hydrogeology, including the geologic setting, conceptual model, and groundwater movement regime, in addition to model construction and simulations | 1994 | |
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USGS |
The report presents three GIS applications for regridding groundwater models. It uses the Walla Walla River Basin to demonstrate how generate a high resolution local grid from a low resolution regional grid such as the one developed for the Columbia Plateau RASA. It focuses primarily on GIS objectives such as assembling data array inputs, and verifying and comparing model results. | 1994 | |
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USGS |
PP 1413B is part of the USGS Regional Aquifer-System Analysis (RASA) program study of the Columbia Plateau which covers parts of Washington, Oregon, and Idaho. The report describes the physical, cultural, and economic setting, the geologic framework, the hydrologic characteristics of major hydrogeologic units, the components of the water budget, and the regional ground-water flow system, and presents a brief overview of the water-quality characteristics and geochemistry of the aquifer system | 1994 | |
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USGS |
This report is part of the USGS Regional Aquifer-System Analysis (RASA) program study of the Columbia Plateau which covers parts of Washington, Oregon, and Idaho. The construction and use of a steady-state numerical groundwater flow model are described and based on model results, the effects of potential water-development practices are also presented. | 1884 | |
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USGS |
The report documents modifications to the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model used for a regional aquifer-system analysis of the Columbia Plateau. The report, which describes the concepts and mathematical basis for the modifications, is intended for potential users who are familiar with the original modular model. | 1993 | |
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Ground-water pumpage from the Columbia Plateau, Washington and Oregon, 1945 to 1984 USGS |
This study is part of the Columbia Plateau Regional Aquifer-System Analysis study and provides estimates of historic ground-water pumpage for selected years from 1945 to 1984. | 1982 | |
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Surface-water resources of the Columbia Plateau in parts of Washington, Oregon and Idaho. USGS |
This report describes and documents surface-water resources for the Columbia Plateau, defined by the boundaries of the regional aquifer system. The objective of this report is to describe and document the availability of surface-water data and to describe the resources on the Columbia Plateau for use in an analysis of the water budget of the aquifer system. | 1991 | |
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Geologic framework of the Columbia Plateau Aquifer System, Washington, Oregon, and Idaho USGS |
The Columbia Plateau in eastern Washington, north-central and northeastern Oregon, and western Idaho covers more than 70,000 square miles underlain chiefly by basalt belonging to the Columbia River Basalt Group. Structure contour and thickness maps have been prepared for each unit and for selected sedimentary interbeds in this study. | 1990 | |
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USGS |
Groundwater level contour maps for three basalt units of the Columbia Plateau regional aquifer system were constructed by using water levels measured in 1,105 wells during 1985. These measurements then were compared with similar measurements from spring 1983 to assess the changes in groundwater levels over the 2-year period for each of the basalt units. Configuration of the groundwater contours and water level changes reflect (1) recharge and discharge; (2) hydraulic conductivity; (3) use of imported surface water for irrigation; and (4) pumpage of groundwater. The movement of groundwater within each basalt unit is controlled mainly by the major rivers, streams, and coulees, whereas variations in flow directions between units are related to the occurrence, extent, and hydraulic conductivity of the basalt units and sedimentary interbeds and to differences in the amounts of recharge to each unit. | 1989 | |
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USGS |
This report presents water quality data for the Columbia Plateau regional aquifer system, for the period 1982 through 1983. Data from about 350 wells in three Miocene basalt units in the Columbia Plateau regional aquifer system, Washington, show that the quality of groundwater generally is suitable for most uses. | 1989 | |
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USGS |
This data report presents groundwater information collected and analyzed as part of the U.S. Geological Survey 's Columbia Plateau Regional Aquifer System Analysis study. The information was gathered from July 1982 through September 1985 in the part of the aquifer system in central and eastern Washington, and north-central and eastern Oregon. Volume I consists of geohydrology. | 1988 | |
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Ground-water pumpage from the Columbia Plateau regional aquifer system, Washington, 1984 USGS |
An inventory of ground-water pumpage from large capacity wells on the Columbia Plateau in eastern Washington was started in 1981 in conjunction with a regional aquifer study of the plateau. | 1990 | |
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USGS |
Estimates of time-averaged ground-water recharge to the Columbia Plateau regional aquifer system were computed for predevelopment and current land-use conditions for 1956-77. The estimates were computed using a deep-percolation model | 1990 | |
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Archiving of deep percolation models, data files, and calculated recharge estimates for the Columbia Plateau regional aquifer system, Geologic framework of the Columbia Plateau Aquifer System, Washington, Oregon, and IdahoWashington, Oregon and Idaho USGS |
The report documents the archiving of computer files used in a daily deep percolation model to calculate recharge estimates for the Columbia Plateau regional aquifer system in parts of Washington, Oregon, and Idaho. The files are obtainable on magnetic tape from the U.S. Geological Survey | 1990 | |
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Geologic framework of the Columbia Plateau Aquifer System, Washington, Oregon, and Idaho USGS |
WRI 87-4238 describes the geologic framework of the Columbia Plateau regional aquifer system and represents a first step in the development of a conceptual model of the flow system for the Columbia Plateau RASA. The report compiles geologic and structural maps, and well records from Washington, Oregon, and Idaho, to determine hydraulic characteristics and define hydrologic boundaries of hydrogeologic units that compose the aquifer system. | ||
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USGS |
This data report presents groundwater information collected and analyzed as part of the U.S. Geological Survey 's Columbia Plateau Regional Aquifer System Analysis study. The information was gathered from July 1982 through September 1985 in the part of the aquifer system in central and eastern Washington, and north-central and eastern Oregon. Volume II consists of water levels. | 1988 | |
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Ground-water pumpage from the Columbia Plateau Regional Aquifer System, Oregon, 1984 USGS |
Groundwater pumpage was estimated for 1984 for an area of about 8,000 sq mi in north-central Oregon. Pumpage data were collected from irrigation, industrial and public supply users and analyzed as part of the Columbia Plateau Regional Aquifer System Analysis (RASA) study | 1987 | |
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Documentation of a deep percolation model for estimating ground-water recharge USGS |
This report documents a deep percolation model developed in conjunction with the Columbia Plateau RASA program. The deep percolation model, which operates on a daily basis, was developed to estimate long-term average groundwater recharge from precipitation. It has been designed primarily to simulate recharge in large areas with variable weather, soils, and land uses, but it can also be used at any scale. | 1987 | |
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USGS |
The U.S. Geological Survey began a 4-year study of the regional aquifer system underlying the Columbia Plateau, in central and eastern Washington, northern Oregon, and northwestern Idaho in October 1983, as part of the Regional Aquifer System Analysis (RASA) program. The study will describe the geohydrology, geochemistry, and quality of water in the Columbia River Basalt Group, the Miocene rocks that underlie 70,000 square miles in three States. This report describes the geohydrologic setting, hydrologic problems, objectives, and approach for the region. | 1986 | |
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Regional Aquifer-System Analysis Program of the U.S. Geological Survey: Summary of projects, 1978-84 USGS |
Circular 1002 summarizes the status of each investigation of the regional aquifer systems under the program from 1978 through 1984, including the Columbia River Basalt Group. The Regional Aquifer-System Analysis Program of the U.S. Geological Survey was initiated in 1978 as a result of specifications of the appropriations bill of the 95th Congress, prompted by the 1977 drought. The purpose of this program is to define the regional hydrology and geology and to establish a framework of background information of geology, hydrology, and geochemistry of the Nation's important aquifer systems. | 1986 | |
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USGS |
2-1/2 year study of the Columbia Plateau in Washington was begun in March 1982 to define spatial and temporal variations in dissolved sodium in the Columbia River Basalt Group aquifers and to relate these variations to the groundwater system and its geologic framework. This report describes the geologic framework , including the vertical and areal extent of the major basalt units, interbeds, and overlying materials. This report is intended to serve as a base for evaluating the distribution of dissolved sodium in basalt aquifers and as a base for future water resource studies | 1986 | |
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USGS |
A report containing data on groundwater levels in three basalt hydrologic units characterized as part of the Columbia Plateau RASA program. | 1986 | |
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USGS |
A 2 1/2-year study of the Columbia Plateau in Washington was begun in March 1982 to define spatial and temporal variations in dissolved sodium in aquifers of the Columbia River Basalt Group and to relate these variations to the groundwater system and its geologic framework. This Water-Resources Investigation Report is part of that study and describes groundwater level contours for four major geohydrologic units in southeastern Washington. | 1985 | |
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Geochemical controls on dissolved sodium in basalt aquifers of the Columbia Plateau, Washington. USGS |
This Water-Resources Investigation Report studies the Miocene basaltic aquifers of the Columbia Plateau in Washington State. Irrigation with groundwaters with relatively high sodium concentrations has been cause for concern in recent years, because of the tendency of such waters to reduce soil permeability. The report investigates the chemical reactions involving groundwater and the basalts as the primary mechanisms responsible for the input of sodium to groundwater in the plateau | 1985 | |
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Digital model of the gravel aquifer, Walla Walla River basin, Washington and Oregon USGS |
Water Supply Bulletin 45 (1976) describes the development of digital-computer models of the basin’s shallow gravel aquifer and underlying basalt aquifers used to simulate hydrologic characteristics of these aquifers under various stress conditions. The study area described in this bulletin includes portions of Walla Walla, Columbia, Garfield, and Asotin counties, WA and Umatilla County, OR. | 1976 | |
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USGS |
Water Supply Bulletin 44 (1976) describes an investigation to determine the water budget for the entire Walla Walla River basin (including those parts of the basin in the state of Oregon) and develop a digital model to simulate the intermediate basalt aquifer system underlying the basin, with predictive capability for use as a management tool. This bulletin includes well records for selected wells in Walla Walla, Columbia, Garfield, and Asotin counties, WA and Umatilla County, OR. | 1976 | |
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USGS |
Water Supply Bulletin 37 (1973) describes an evaluation of the total water resources and the construction of a mathematical model that simulates the actual hydrologic conditions within the Walla Walla River basin. It utilizes and adds to hydogeologic and water-level data presented in WSB 21, and documents a general water budget for the basin. The study area described in this bulletin includes portions of Walla Walla, Columbia, Garfield, and Asotin counties, WA | 1976 | |
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Quality of the Ground water in Basalt of the Columbia River Group, Washington, Oregon and Idaho USGS |
This report characterizes the water quality of groundwater found in the Columbia River group basalts in WA, OR and ID. Chemical analyses were used to identify prevalent and specific types of water, and C-14 dating informs a discussion of groundwater age. | 1972 | |
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Sediment Transport by Streams in the Walla Walla River Basin, Washington and Oregon USGS |
This report describes sediment transport by surface water in the Walla Walla River Basin with the goals of determining sediment yeild, evaluating the environmental factors influencing yield and transport, and establishing a fluvial-sediment reference for furture planning. The report summarizes the geology and surface hydrology of the basin, and provides suspended sediment and bedload data analyzed in regard to flow events. The study area includes Walla Walla Co and parts of Columiba Co, WA, and parts of Umatilla Co and Wallowa Co, OR | 1969 | |
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USGS |
Included in a volume of professional papers, this report concisely summarizes the results of Price's (1961) investigation into the feasibility of recharging the basalt aquifer through injection in a City of Walla Walla well. | 1962 | |
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Artificial recharge through a well tapping basalt aquifers, Walla Walla area, Washington. USGS |
This report describes an experiement to determine the feasibility of artificial recharge to halt declining water levels in the basalt aquifer in part of the Walla Walla Basin WA. The investigation focuses on the effects of injecting surface water into a basalt well, with a discussion of the yield characteristics, recovery of injected water, and aquifer response around the City of Walla Walla well. The report also provides an overview of the geologic and hydrologic characteristics of the basalt aquifer, the Walla Walla water supply system, and the suitability of surface water for recharge | 1960 | |
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A Reconnoissance [sic] in Southeastern Washington USGS |
WSP 4 describes a reconnaissance of the area south of the Snake River, in southeastern WA, conducted for the purpose of obtaining artesian groundwater. The report includes observations of the regional physiography, geology, irrigation, and artesian water supply. The primary area described included the entirety of Walla Walla, Columbia, Garfield and Asotin counties, WA, with supplemental reconnaissance as far north as Spokane, WA and as far south as Wallowa, OR. | 1897 | |
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Interstate Stream Nomenclature - Walla Walla River Basin Bill Neve, Water Right Solutions |
This document depicts differences between stream nomenclature in Oregon and Washington. There are several streams that pass from state to state and the naming is not always uniform. | ||
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Walla Walla River Mainstem Water Rights Table Bill Neve, Water Right Solutions |
An excel spreadsheet showing water rights within the Walla Walla River on the Washington side. There are tabs for different major diversions and surface water reaches. It includes contact information, water quantities, priorities, and other relevant water rights information. | ||
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Bill Neve, Water Right Solutions |
The purpose of this paper is to explore two examples of basins with functioning voluntary agreements not to divert management systems, evaluate their successes and failures, and provide information on what aspects of these programs may have applicablity to the Walla Walla Basin | 2018 | |
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Interstate Management and Protection of Instream Flow Bill Neve Water Right Solutions |
As a result of a negotiated settlement agreement between the Hudson Bay and Walla Walla River Irrigation Districts in Oregon and Gardena Farms Irrigation District No. 13 in Washington (‘the Districts’), the Districts agreed to voluntarily bypass water past their respective diversion points at all times when they are diverting water into their canals for irrigation purposes. These agreements were initially entered into in 2001. While the settlement agreements have since expired, the Districts are still adhering to the bypass flows contained in the latest version of those agreements. | 2018 | |
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Jacobs Engineering Group |
The purposes of this technical memorandum are to present current status of the Mill Creek GI being performed by USACE, use the limited available information to characterice the upper and lower boundaries of rough order-of-magnitude construction costs for developing long term storage for the sole purpose of augmenting flow in the Walla Walla River to aid in restoring fish flows, and to determine the water availability for potential storage in Bennington Lake. | 2019 | |
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Lyons Ferry Hatchery Complex Summer Steelhead Evaluations - 2012 Run Year Annual Report Washington Department of Fish and Wildlife |
This annual report is one in a series describing the Washington Department of Fish and Wildlife’s (WDFW) progress toward meeting summer steelhead and rainbow trout mitigation goals established in the Lower Snake River Compensation Plan (LSRCP) -- including the Touchet steelhead population. | 2015 | |
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WA Department of Ecology |
The water supply systems within the Columbia River Basin were built to reliably deliver water under historical conditions. Future changes in water supply and demand, therefore, have the potential to stress the system. This 2016 Long-Term Water Supply and Demand Forecast provides information that will help legislators, water managers, industry, and agency professionals plan for future conditions that will likely be quite different from those we have experienced in the past. | 2016 | |
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Columbia River Long-term Water Supply and Demand Forecast - 2016 Technical Supplement WA Department of Ecology |
Technical supplement to the 2016 Columbia River Long-term Water Supply and Demand Forecast Legislative Report. | 2016 | |
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Touchet River - Summary of 2018 Surface Water Monitoring Program Results WA State Department of Agriculture |
WSDA routinely monitors surface water throughout the state for the presence of pesticides. State and Federal agencies use this data to evaluate water quality and make exposure assessments for pesticides registered for use in Washington. In 2018, WSDA monitored 16 sites in Washington, one in Walla Walla County. | 2019 | |
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WA Department of Ecology |
The Touchet River was included in the Walla Walla River basin total maximum daily load (TMDL) evaluations for fecal coliform bacteria, pH, and dissolved oxygen that were conducted in 2002 and later approved by the U.S. Environmental Protection Agency. The TMDLs recommended additional monitoring for specific areas in the Touchet River. This supplemental study documents findings of the additional monitoring on the Touchet River. | 2010 | |
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Walla Walla River Chlorinated Pesticides and PCBs Total Maximum Daily Load Submittal Report WA Department of Ecology |
The Washington State Department of Ecology (Ecology) is establishing a water quality clean-up plan or total maximum daily load (TMDL) for the Washington State portion of the Walla Walla basin that covers the pollution parameters of chlorinated pesticides and PCBs. This TMDL will address potential impairments of beneficial uses of Washington State. | 2006 | |
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WA Department of Ecology |
This TMDL report describes (1) the technical data evaluation for fecal coliform bacteria in the Walla Walla River basin, and (2) the basis for allocating fecal coliform loads to nonpoint (diffuse) and point (discrete) sources. Ecology conducted the study for 13 months, June 2002 through June 2003 | 2006 | |
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WA Department of Ecology |
As part of the Walla Walla River Basin Fecal Coliform Bacteria and pH Total Maximum Daily Load (TMDL) Study, the Department of Ecology conducted a series of water quality surveys from June 2002 through June 2003. This report presents data collected during these surveys, including field and laboratory water quality data and flow data. The quality assurance and quality control analysis of the data is also provided. | 2005 | |
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WA Department of Ecology |
Ecology conducted TMDLs in this watershed because the Walla Walla River and several tributaries were on Washington State’s list of impaired waters [the 303(d) list] in 1996 and 2004 for not meeting temperature, pH, dissolved oxygen, PCBs, chlorinated pesticides, and fecal coliform standards (Table 1). The watershed contains important bull trout and salmon populations, so there is further potential for habitat restoration. The federal Clean Water Act of 1972 requires the state to develop a cleanup plan (a TMDL) and to implement activities in the plan to bring these water bodies back into compliance with standards. | 2008 | |
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Walla Walla Watershed Temperature Total Maximum Daily Load (TMDL) - Water Quality Improvement Report WA Department of Ecology |
This study was initiated because of 303(d) listings for temperature on the Walla Walla River, Touchet River and Mill Creek. The original exceedances were found during routine monitoring at three Ecology Ambient Monitoring stations during 1991-1996. | 2007 | |
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Fish Screens and Flow Meters - Reducing ESA listed salmon mortality Walla Walla County Conservation District |
In 2001 there were hundreds of irrigation diversions which did not meet federal standards for protecting endangered fish species. Area irrigators, the Walla Walla County Conservation District, the Washington Department of Fish and Wildlife, the Snake River Salmon Recovery Board, and the Washington Dept. of Ecology came together and developed a program to help defray the cost of upgrading to National Marine Fisheries approved fish screens. | 2019 | |
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Conservation Reserve Enhancement Program (CREP) 2019 Update Walla Walla County Conservation District |
The Conservation Reserve Enhancement Program (CREP) is a tool the Walla Walla County Conservation District, the Natural Resources Conservation Service, the Farm Service Agency and landowners can use to improve a long-neglected conservation streams in Walla Walla County. | 2019 | |
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Creating Urban Riparian Buffers (CURB) \Walla Walla County Conservation District |
The Conservation Reserve Enhancement Program (CREP) had proved to be an outstanding program for restoring riparian forest buffers along streams in Walla Walla County Unfortunately, only the working lands outside of the incorporated areas of the county were eligible. The WWCCD recognized that there also was an important need to restore riparian zones in the urban areas as well. | 2020 | |
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NOAA Fisheries |
NOAA Fisheries evaluated controls on locations of channel incision, variation in channel evolution pathways and the time required to reconnect incised channels to their historical floodplains in the Walla Walla and Tucannon River basins | 2008 | |
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Conceptual Bennington Lake Storage Options Unknown |
Three conceptual Bennington Lake storage options were introduced and explored to improve flows in the Walla Walla River. The three options include replacing GFID Walla Walla River diversion with Bennington Lake reservoir storage, replacing Consolidated Lowden ditch diversions with reservoir storage, and piping Bennington Lake storage water to a proposed Pine Creek Reservior. | ||
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WWBWC Mill-Yellowhawk Complex: Spring Gauge Locations (2009) Walla Walla Basin Watershed Council |
A map showing WWBWC gauge locations throughout the Walla Walla Basin. | 2009 | |
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Memorandum Regarding Pine Creek Reservoir - Borrow Source Investigation Findings Jacobs Engineering Group |
To evaluate the presence of suitable materials to construct an appropriately-designed, seismically-resistant, clay-cored dam, Jacobs conducted a limited borrow source investigation. The soils in the vicinity of the proposed dam site consist primarily of non-plastic to very-low plasticity sandy silt, silt with sand, or silty sand. These materials do not possess the required plasticity for construction of a clay-cored dam. An expanded search for suitable clay materials could be conducted. | 2019 | |
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Jacobs Engineering Group |
acobs conducted a site reconnaissance and investigation consisting of a limited fault study and initial borrow source identification. The site reconnaissance and investigation were conducted to inform the Pine Creek Resevoir alternative for the Walla Walla Integrated Flow Enhancement Study. The potential for an active fault at the reservoir site has resulted in an earthfill or rockfill dam type concept because this dam type is more suitable to mitigate the effects of fault rupture under the dam. A preliminary borrow source investigation will be conducted to assess availability and suitability of clay material to use as clay core in the dam. | 2019 | |
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Memorandum Regarding Expanded Borrow Source Desktop Study – Pine Creek Dam Jacobs Engineering Group |
Jacobs conducted an expanded borrow source material desktop study to search for suitable earthfill or rockfill dam type materials in a larger geographic area. This study evaluated whether more distant material sources could be used economically. This study was conducted to inform the feasibility of the Pine Creek Reservoir alternative for the Walla Walla Integrated Flow Enhancement Study. | 2019 | |
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Walla Walla Basin Watershed Council |
The water budget analysis and data sets discussed in this report provide water managers and researchers in the Walla Walla basin a more refined tool by which to look at seasonal and spatial flow distribution in the Walla Walla River, Touchet River, and Mill Creek systems. | 2017 | |
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Stillwater Sciences |
The purpose of this ecological flow study is to develop instream flow prescriptions to support the recovery and maintenance of all the CTUIR’s fishery, but focuses on spring Chinook salmon, steelhead trout, and bull trout. The CTUIR fishery in the Walla Walla Basin includes spring Chinook salmon, steelhead trout, bull trout, rainbow trout, red band trout, mountain whitefish, Pacific lamprey, bridge lip and large lip suckers, and freshwater mussels. The prescriptions include instream flows that optimize, where feasible, the fishery and related habitat maintenance benefits. | 2013 | |
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Pacific Groundwater Group |
This report presents analysis of three study areas identified as good candidates for irrigation conservation projects. The goal of such projects would be to reduce irrigation diversions/withdrawals, thus making more water available during the critical flow periods on a given stream for additional beneficial uses without impairment to existing water rights or fisheries objectives. | 2012 | |
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Pacific Groundwater Group |
This report presents analysis of three study areas identified as good candidates for irrigation conservation projects. The goal of such projects would be to reduce irrigation diversions/withdrawals, thus making more water available during the critical flow periods on a given stream for additional beneficial uses without impairment to existing water rights or fisheries objectives. | 2012 | |
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Pacific Groundwater Group |
This report presents analysis of three study areas identified as good candidates for irrigation conservation projects. The goal of such projects would be to reduce irrigation diversions/withdrawals, thus making more water available during the critical flow periods on a given stream for additional beneficial uses without impairment to existing water rights or fisheries objectives. | 2012 | |
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Groundwater Memoradum: Walla Walla Aquifer Recharge Water Quality report review WA Department of Ecology |
With the documented water quality impairments in the Walla Walla watershed, extensive sampling and analyses of groundwater, source water and soils were prescribed in order to gather the information necessary to assess whether aquifer recharge operations were negatively impacting water quality.This memo assesses the full set of data submitted to Ecology by the Walla Walla Basin Watershed Council documenting the water and soil quality over the course of the infiltration operations. | 2017 | |
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Walla Walla Basin Aquifer Recharge Strategic Plan - January 2013 Walla Walla Basin Watershed Council |
The goal of this document is to summarize aquifer recharge goals, activities, and data for Walla Walla watershed stakeholders so that they may use it while making sustainable water resource decisions for ecological, agricultural, and economic benefit. This document describes the need to stabilize and restore the alluvial aquifer and thus improve low-flow conditions in hydraulically connected streams. | 2013 | |
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Touchet River Floodplain and Flow Restoration Project Tour - October 15, 2019 |
A document describing Toucher River floodplain and flow restoration projects. Highlights projects led by CTUIR, City of Datyon and WWT. | 2019 | |
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City of Walla Walla |
This Report is rooted in a 2016 Washington State Department of Ecology (DOE) Reservoir Permit issued to the City of Walla Walla (City) which authorizes the City, in the operation of its water supply system, to store underground its municipal use water diverted from Mill Creek. This document, permit-mandated for City preparation, is the product of a cooperative joint endeavor of three government entities with different origins and constituencies, namely the (1) Confederated Tribes of the Umatilla Indian Reservation (CTUIR), (2) Washington State Department of Fish and Wildlife and (3) the City | 2018 | |
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West Little Walla Walla River Habitat Assessment - Final Draft Little Walla Walla River Group/Walla Walla Basin Watershed Council |
Members of the Little Walla Walla River Group assessed the habitat of the West Little Walla Walla River (WLWWR) during July and August of 2012 to determine: (1) if significant changes have occurred since CTUIR’s 2004 assessment, and (2) the location of habitat problems and a priority for habitat restoration actions. | 2012 | |
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West Little Walla Walla River Habitat Assessment - Final Draft Little Walla Walla River Group/Walla Walla Basin Watershed Council |
Members of the Little Walla Walla River Group assessed the habitat of the West Little Walla Walla River (WLWWR) during July and August of 2012 to determine: (1) if significant changes have occurred since CTUIR’s 2004 assessment, and (2) the location of habitat problems and a priority for habitat restoration actions. | 2012 | |
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Yellowhawk Stream Temperature Analysis: 2010-2013 versus 2001 Tri-State Steelheaders |
High summertime water temperatures in Yellowhawk Creek, tributary to Mill Creek in the Walla Walla River Basin, are a limiting factor for salmonid restoration and water quality. To improve summer water temperatures, as well as other water quality variables, riparian restoration projects were performed in the cities of Walla Walla and College Place between 2008 and 2014. | 2014 | |
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Proposed Walla Walla Community College Local Water Plan (LWP) Walla Walla Community College |
WWCC's proposed local water plan. Describes plans to exchange the source of water for the Community College’s HVAC system from surface water to basalt wells in order to cease all diversion of waterfrom Titus Creek, among other plans. | ||
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Local Water Plan (LWP) with Larry Pierce - approved by WWWMP Board of Directors Walla Walla Watershed Management Partnership (WWWMP) |
This LWP allows Pierce to move a point of diversion downstream, preserving upstream flows by drawing on a more available water supply. The place of use for the water right will also move along with the point of diversion. | 2018 | |
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Gardena Farms Irrigation District #13 Local Water Plan Agreement (LWP) Walla Walla Watershed Management Partnership (WWWMP) |
The primary purpose of the Gardena Farms Irrigation District #13 LWP is to enhance instream flow conditions in that reach of the Walla Walla River between the Gardena Farms Irrigation District #13 (GFID) diversion and several alternate points of diversion (POD) located approximately 15 miles downstream, below the confluence with the Touchet River. | 2017 | |
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Hassler Local Water Plan Agreement (LWP) Walla Walla Watershed Management Partnership (WWWMP) |
This document is a Local Water Plan approved in accordance and consistent with RCW 90.92. The purpose of the Hassler Local Water Plan is to provide flexibility to the landowner's water use while enhancinginstream flow conditions | 2015 | |
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Reser Farm Local Water Plan Agreement Walla Walla Watershed Management Partnership (WWWMP) |
This document is a Local Water Plan approved in accordance and consistent with RCW 90.92. The purpose of the Reser Local Water Plan is to provide flexibility to the landowner's water use while enhancinginstream flow conditions. | 2014 | |
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Pepper Bridge Local Water Plan Agreement (LWP) Walla Walla Watershed Management Partnership (WWWMP)
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This document is a Local Water Plan approved in accordance and consistent with RCW 90.92. The purpose of the Pepper Bridge Local Water Plan is to provide flexibility to the Local gorup and enhance instream flow conditions from the surface water point of diversion on Yellowhawk Creek downstream to the confluence with Walla Walla River. | 2011 | |
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Stiller Pond Site Local Water Plan Agreement Walla Walla Watershed Management Partnership (WWWMP) |
This document is a Local Water Plan approved in accordance and consistent with RCW 90.92. The purpose of the Stiller Pond Local Water Plan is to enhance instream flow conditions downstream from the surface water point of diversion on Mill Creek to the confluence with the Walla Walla River. | 2011 | |
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Gardena Farms Irrigation District #13 Local Water Plan Agreement Walla Walla Watershed Management Partnership (WWWMP) |
This document is a Local Water Plan approved in accordance and consistent with RCW 90.92. The purpose of the Gardena Farms Irrigation District #13 LWP is to enhance instream flow conditions in that reach of the Walla Walla River between te Gardena Farms Irrigation DIstrict #13 (GFID) diversion and several alternate points of diversion (POD) located approximately 15 miles downstream, below the confluence with the Touchet River. | 2011 | |
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Work Plan for the Walla Walla County Voluntary Stewardship Program Walla Walla County Conservation District and Anderson Perry & Associates, Inc. |
This work plan outlines the Walla Walla County Voluntary Stewardship Program's (VSP) strategy to protect critical areas where agricultural activities are conducted while maintaining and improving the long-term viability of agriculture in the County and reducing the conversion of farmland to other uses. | 2017 | |
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Lower Walla Walla River Geomorphic Assessment and Action Plan Tetra Tech |
The Confederated Tribes of the Umatilla Indian Reservation (CTUIR) has a vested interest in restoring and enhancing high-quality ecological conditions for aquatic species in the Walla Walla Subbasin (Subbasin). The LWWWG (Lower Walla Walla Working Group) determined the need for a detailed geomorphic assessment and action plan (GAAP). This GAAP builds upon the more than four decades of past research and management efforts to more fully understand the physical and biological processes and limiting factors affecting the Lower Walla Walla River (the geomorphic assessment portion), and identify and prioritize restoration and enhancement opportunities (the action plan component). | 2014 | |
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Washington State Conservation Comission |
This report deals with habitat conditions only. It does not deal with harvest, hydropower, or hatchery issues. The report is a summary of existing knowledge from published sources and interviews of people with expertise in the Walla Walla Watershed. It is intended to provide guidance for implementation of salmonid habitat restoration projects. It is not a recovery plan for summer steelhead or bull trout, although it could be a component of such a plan. Habitat conditions are described, then assessed based on standards developed from published sources and consultations with local natural resource agency personnel, finally recommendations are made to improve habitat conditions | 2001 | |
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Washington Department of Fish and Wildlife |
This study began in 1998 to assess salmonid distribution, relative abundance, genetic characteristics (stock status and trends), and the condition of salmonid habitats in the Walla Walla River Subbasin within Washington. | 2007 | |
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NRCS State Resource Assessment 2011: Priority Resource Concerns USDA Natural Resources Conservation Service: Washington State |
The intent of this document is to provide an overview of the USDA Natural Resources Conservation Service (NRCS) Washington 2011 State Resource Assessment (SRA) process and present the final Resource Concern Priority rankings and Priority Treatment Areas. | 2011 | |
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Mill Creek and Walla Walla County Community Wildfire Protection Plan Update Walla Walla County Emergency Management |
This Mill Creek / Walla Walla County CWPP update has been developed in accordance with theguidelines set forth by Federal regulation as well as input from the planning committee,publicstakeholder meetings, and collaborative partners. This document was modeled after theneighboring Union County, Oregon CWPP, in an effort to unify adjacent jurisdictions formitigation strategies and fire risk management of the Mill Creek Watershed. |
2017 | |
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Federal Emergency Management Agency Flood Insurance Rate Map Floorway Consultants |
Maps of Federal Emergency Management Agency Flood Insurance rates for Mill Creek/Walla Walla area | ||
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Walla Walla County Multi-Jurisdictional Hazard Mitigation Plan (HMP) Northwest Management, Inc. |
This plan was prepared pursuant to the requirements of the Disaster Mitigation Action of 2000 (DMA2K) and the implementing regulations set forth by the Interim Final Rule published in the Federal Register in February 2002, (44 CFR 201.6), hereafter, these requirements will be referred to collectively as the DMA2K. While the act emphasizes the need for mitigation plans, more coordinated mitigation planning, and implementation efforts, they also establish requirements for hazard mitigation funding from the Robert T. Stafford Disaster Relief and Emergency Act. | 2018 | |
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Appendix B: Developing an Approximation of the Normative Hydrograph at Milton-Freewater Unknown |
Three channels contribute flows to the Walla Walla River before it leaves the Blue Mountains- the North Fork of the Walla Walla River, South Fork of the Walla Walla River, and Couse Creek. The existing gaging stations on the North Fork and South Fork of the Walla Walla River are located upstream of all major diversions. Only two surface water rights, for diversion of a total of 0.003 cfs, are listed in OWRD's database for points of diversion located upstream of the OWRD gaging stations on the North Fork and South Fork. | ||
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Walla Walla Basin Watershed Council |
One of the greatest barriers to salmonid survival in the Walla Walla Basin is thermal water quality. The 2002/2003 Total Maximum Daily Load (TMDL) temperature studies carried out on the three major basin riversfound that water temperatureoften reachedlethal levelsfor salmonid species. The Oregon TMDLassessment conducted by the Oregon Department of Environmental Quality (ODEQ) and the Walla Walla Basin Watershed. Council (WWBWC)in 2000 found that seven-day moving average temperatures on the main stem Walla Walla River exceeded the Oregon state water quality standard1on 36 of the 43 study sites on the Walla Walla River (Butcher et. al, 2005). The standard was also exceeded at all sevenstudy sites on the Touchet River and Mill Creek (Butcher et. al, 2005). The ODEQ/WWBWC TMDL assessment citedincreased in-stream flows and increased shade as the most critical factors for lowering the currently high water temperatures to meet thermal water quality standards. | 2010 | |
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HDR EES, Inc. |
The Walla Walla River Basin is an important aquatic resource that empties into the Columbia River downstream of the Snake River confluence and upstream of McNary Dam at approximately River Mile 315 (RKm 507). As illustrated in Figure 1, the main stem of the Walla Walla River originates in the Blue Mountains of eastern Oregon before crossing the state line into Washington near the towns of Milton-Freewater, Oregon and Walla Walla, Washington. Because of increasing concerns for resident bull trout and anadromous salmonid species in the basin, fish and water management agencies have begun to examine steps needed to protect several important rearing and spawning reaches in the river system. One issue concerns the impact of water temperatures in the main stem of the Walla Walla River. | 2007 | |
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Walla Walla Subbasin Stream Temperature Total Maximum Daily Load and Water Quality Management Plan Oregon Dept. of Environmental Quality |
This document lays out goals and planning to address elevated stream temperature in the Walla Walla Subbasin in Oregon. This report is issued to USEPA as the Total Maximum Daily Load to address these listings in Oregon. Part 1 is the TMDL and Part 2 is the WQMP. The goal of the TMDL is a natural stream temperature pattern. This is expressed first as a solar radiation heat loading and then translated to effective shade. Other measures of progress are provided as well. These targets are applicable to nonpoint sources of pollution. | 2005 | |
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Geomorphic Assessment: Touchet River Upstream of Dayton, Washington Geoengineers |
The Touchet River Geomorphic Assessement Project is the product of a progressive community-wide collaboration to improve habitat for ESA listed steelhead and bulltrouth while simutaneously exploring ways to attenuate flood risk to the community. The framework of this project was developed so site-specific river/floodplain restoration opportunities are identified within the context of watershed processes. This report serves as a foundation for future restoration planning and also provides conceptual restoration details for the top priority reach. | 2011 | |
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lood Insurance Study- Columbia County, Washington and Incorporated Areas FEMA |
This Flood Insurance Study investigates the existence and severity of the flood hazards in the geographic area of Columbia County, Washington, including the incorporated Cities of Dayton and Starbuck, and the unincorporated areas of Columbia County and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study has developed flood risk data for various areas of the community that will be used to establish actuarial flood insurance rates and to assist the community in its efforts to promote sound floodplain management. | 2000 | |
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Notification of Flood Insurance Study for Walla Walla County FEMA |
The Flood Insurance Study report and Flood Insurance Rate Map for Walla Walla County revisions that are used for floodplain management purposes and flood insurance policies. | 2006 | |
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Notification of Flood Insurance Study for Walla Walla County FEMA |
This Flood Insurance Study investigates the existence and severity of flood hazards in the unincorporated areas of Walla Walla County, Washington, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Walla Walla County to the regular program of flood insurance by the Federal Emergency Managment Agency. Local and regional planners will use this study in their efforts to promote sound flood plain management. | 2002 | |
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Touchet River Adjudication Report of Referee Columbia County Superior Court |
The Report of Referee for the water rights adjudication in the Touchet River from 1929. This is a photo-copied document. This report describes proceedings that determined the relative priorities of all surface water rights at the time. The Report of Referee precedes the Court's Final Decree that determines validity and priorities of the water rights. | 1929 | |
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Touchet River Adjudication Final Decree Columbia County Superior Court |
This is the final decree for the Touchet River water rights adjudication from 1929. This is a photo-copied document and does not include the final schedule of rights, which can be found in the report of referee. This court case determined the validity and relative priorities of all surface water rights at the time. | 1929 | |
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Walla Walla River Adjudication Final Decree Walla Walla County Superior Court |
This is the final decree for the Walla Walla River water rights adjudication from 1928. It is a photo-copied document and includes the final schedule of rights. This court case determined the validity and relative priorities of all surface water rights at the time. | 1928 | |
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Courtney van Stolk |
This study collected a significant amount of data on groundwater isotopic and chemical composition in the Walla Walla Subbasin that could provide input for future research to better understand its groundwater system. In particular, a partial mixing model using carbon-14 and tritium concentrations would allow for estimates of recharge volumes along different flow paths and timescales in the subbasin. One statistical weakness of this study was the small number of wells with the full suite of chemical and isotopic parameters used in the principal component analyses. This issue could be solved by including more data points from wells that are being sampled as part of a planned USGS and Washington Department of Ecology study in the Washington portion of the Walla Walla River Basin that will take place in 2019 and 2020. | 2019 | |
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City of Walla Walla |
Measurements and correspondence in relation to City of Walla Walla System Data Request | 2020 | |
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Water Loss Control Action Plan City of Walla Walla |
Over the last six years, the City of Walla Walla has experienced an average Distribution System Leakage (DSL) of approximately 29% for all water that enters the water distribution system. The Washington Department of Health (DOH) regulations discussed in Ch. 246-290-820(4) of the Washington Administrative Code (WAC) require the completion of a Water Loss Control Action Plan (WLCAP) with the objective of the plan being to reduce distribution system water losses to 10% or less over a prescribed timeline. | 2019 | |
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Walla Walla Pilot Local Water Management Program - Interm Progress Report - 2012 Walla Walla Watershed Management Partnership (WWWMP) and Ecology |
In 2009, the Washington State Legislature unanimously approved Second Substitute House Bill 1580(Establishing a pilot local water management program in one qualified jurisdiction)as a ten-year pilot program. The act was signed by Gov. Christine Gregoire and codified in RCW 90.92.The Walla Walla Watershed is provided an unprecedented opportunity under RCW 90.92 to solvelocal water management challenges in a new way, piloting a cooperative approach that includes local shared-governance and innovative tools to address the complex and intertwined problems of low stream flows, endangered fish populations, and competing water demands.This document is an interim progress report, the first of three required reports in RCW 90.92.060, summarizing the previous three years actions, funding, accomplishments, and recommendations of the Walla Walla Watershed Management Partnership. | 2012 | |
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Walla Walla Pilot Local Water Management Program - Interm Progress Report - 2015 Walla Walla Watershed Management Partnership (WWWMP) and Ecology |
This document is the second of three interim progress reports to be submitted to the Legislature by the WallaWalla Watershed Management Partnership (Partnership), per RCW 90.92. This report summarizes Partnership activities and accomplishments from December 2012 through November 2015 | 2015 |