Research & Data

Use this portal to filter and search for all of our scientific information.

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.

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2018 South Skagit Bay Assessment Update

Working with Dept. of Health we've identified South Skagit Bay as a priority area to improve water quality. This is a summary of our work for 2018.

https://ecology.wa.gov/south-skagit-bay-assessment-update

Spreadsheet of TEC & DWEC

This spreadsheet includes the proposed revisions to policy 1-11 assessment of tissue and water data for human health

https://ecology.wa.gov/spreadsheet-of-tec-dwec

SoapLakeOustandingWaterLetter

This letter was sent in response to the application for Soap Lake to become an Outstanding Resource Water

https://ecology.wa.gov/soaplakeoustandingwaterletter

Policy 1-11 Public Dialogue Sediment Management Standards (SMS) Issues December 2016

This is a review of the sediment management standards issues for the Water Quality Assessment/Policy 1-11 Updates Human Health Criteria Alternatives Proposed by Ecology

https://ecology.wa.gov/smsissuepaperpolicy1-11

Spokane River Stewardship Partners Policy 1-11 comment letter

2017 Spokane River Stewardship Partners comment letter on WQ Assessment Policy 1-11 updates

https://ecology.wa.gov/srspcomment_hhc_3-15-2017

Soos Creek SAP Appendix 1: 7-DADMAX thermal record graphs

7-DADMAX thermal record graphs for Soos Creek Watershed Temperature and DO TMDL Study and Analysis Plan, Appendix 1

https://ecology.wa.gov/soos-creek-sap-appendix-1-7-dadmax-thermal-record

Soos Creek SAP Appendix 2: Historical dissolved oxygen data

Historical dissolved oxygen data

https://ecology.wa.gov/soos-creek-sap-appendix-2-historical-dissolved-ox

Soos Creek SAP Appendix 3: Discharge, water temperature, air temperature graphs

Discharge, water temperature, air temperature graphs

https://ecology.wa.gov/soos-creek-sap-appendix-3-discharge-water-temper

Ecology Water Quality Funded Facility Projects Standard Contract Clauses

https://ecology.wa.gov/standard-contract-clauses

Procedure for sizing Silva Cells using the Western Washington Hydrology Model.

Procedure for sizing Silva Cells to meet water quality standards using the Western Washington Hydrology Model. Silva Cells have been found to be functionally equivalent to rain gardens (Bioretention) for stormwater control.

https://ecology.wa.gov/silvacellswwhmprocedure

Soaker Tire-Wash Functional Equivallency

Ecology finds Soaker-Tire Wash system is functional equivalent to BMP C106 (Wheel Wash) for stormwater management.

https://ecology.wa.gov/soakerwheelwashfunctionallyequivalent

Splash Boxx Functional Equivalency

Ecology finds Splash Boxx treatment system is functionally equivalent to a Bioretention Facility (rain garden) when using approved Bioretention Soil Media for stormwater management and must adhere to the guidelines for Bioretention areas found in Best Management Practice T7.30.

https://ecology.wa.gov/splash-boxx

Guidance for demonstrating compliance with water quality standards when using Splash Boxx using the Western Washington Hydrology Model.

PowerPoint report gives the procedure for demonstrating compliance with water quality standards when using Splash Boxx for stormwater management using the Western Washington Hydrology Model.

https://ecology.wa.gov/splashboxxguidence

Aquatic Noxious Weed Control NPDES General Permit Shoreline Posting Templates

Shoreline Posting Templates for the Aquatic Noxious Weed Control NPDES General Permit.

https://ecology.wa.gov/shorelinepostingtemplatesnoxweed

Aquatic Noxious Weed Control NPDES General Permit Shoreline Posting Templates - Spanish

Shoreline Posting Templates for the Aquatic Noxious Weed Control NPDES General Permit - SPANISH.

https://ecology.wa.gov/shorelinepostingtemplatesnoxweed_spanish

Shoreline sign templates (English)

Shoreline sign templates for use meeting APAM permit requirements.

https://ecology.wa.gov/shorelinesignsapam

Fisheries Resource Management Permit Shoreline Sign Template

https://ecology.wa.gov/signtemplatesshorelineposting

2018 Pretreatment Plan Station House Oyster

2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Station House Oyster.

https://ecology.wa.gov/station-2018-pretreatment-plan

2017 Annual Report for Station House Oyster

This annual report covers Zostera Japonica controls on commercial clam beds in Willapa Bay for Station House Oyster.

https://ecology.wa.gov/station-3004-2017-annual-report

Snohomish County 2005 CSWGP Appeal

2005 Construction Stormwater General Permit appeal from Snohomish County.

https://ecology.wa.gov/snohomishcounty