Research & Data

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

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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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Research & Data

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

Research & Data icon

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.

See more about this collection...
Air Quality Index (AQI)
The Air Quality Index (AQI) tells you when air quality is healthy or unhealthy.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/Air-Quality-Index
Effectiveness monitoring for water quality
Our scientists study the effectiveness of projects to protect and improve water quality.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/Water-quality-improvement-effectiveness-monitoring
River and stream flow monitoring
We report the amount of water flowing through Washington’s rivers and streams using graphs and maps.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/River-stream-monitoring/Flow-monitoring
Measuring bluff erosion in ​Clallam County
​We collected scientific data about bluff-backed Dungeness and Elwha beaches and spits to measure erosion.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/Coastal-monitoring-assessment/Projects/Clallam-County-bluffs
​Shoalwater Bay berm monitoring
We monitored the Willapa Bay shoreline to assess how a flood-protection berm changed over time.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/Coastal-monitoring-assessment/Projects/Shoalwater-Bay-berm-monitoring
Puget Sound feeder bluffs
Protecting the cliffs that feed Puget Sound beaches with sand and the beaches that depend on them.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/Coastal-monitoring-assessment/Projects/Puget-Sound-feeder-bluff
Lower Snohomish River Tributaries effectiveness monitoring
We're studying bacteria pollution in tributaries to the Lower Snohomish River.
https://ecology.wa.gov/Research-Data/Monitoring-assessment/Water-quality-improvement-effectiveness-monitoring/Lower-Snohomish-River-Tributaries
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/Asset-Collections/Doc-Assets/Water-quality/TMDLs/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/Asset-Collections/Doc-Assets/Water-quality/TMDLs/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/Asset-Collections/Doc-Assets/Water-quality/TMDLs/Soos-Creek-SAP-Appendix-3-Discharge,-water-temper
Water Quality Fiscal Year 2013 - 2015 Biennium Outcomes Report
2 year report on Water Quality projects funded by Ecology, covering Fiscal Years 2013 through 2015
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Water-quality/Grants-and-Loans/Gen-Resources/Fiscal-Year-2013-2015-Biennium-Outcomes-Report-f
Clean Watershed Needs Survey - Calendar year 2018 Overview
This document provides an overview of the calendar year 2018 cycle of the Clean Watershed Needs Survey process for reviewing state watersheds to make a list of their water issues and needs
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Water-quality/Grants-and-Loans/Gen-Resources/CWNS-CY2018-Overview
2019 Ambient Air Monitoring Network Plan
This report describes Washington's air monitoring network and how Ecology will operate its air quality monitoring stations in the next year.
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/Air-quality-monitoring-network/20190515AirMonitoringNetworkPlan
Verification of Continued Attainment in Limited Maintenance Areas
This document summarizes the calculations for verification of continued attainment of National Ambient Air Quality Standards (NAAQS) in Washington's Limited Maintenance Areas.
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/Air-quality-monitoring-network/20190515Verification
Ecology Water Quality Funded Aquatic Invasive Plants Grant Project Offer List for Fiscal Year 2021
List of applicants who were offered grants/loan through Ecology's Water Quality Funded Aquatic Invasive Plants Grant Project for Fiscal Year 2021
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Water-quality/Grants-and-Loans/Aquatic-Inv-Plant-Prgm/FY2021-Aquatic-Invasive-Plant-Grants-Offer-List
Policy 1-11 Easy-To-Read Bacteria Criteria Revisions
Easy to read version of water quality Policy 1-11 proposed bacteria criteria revisions for public comment
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Water-quality/Water-improvement/Policy-1-11-Draft-Bacteria-Criteria-Revisions
Frequently Asked Questions: Policy 1-11 Bacteria Criteria Revision
Frequently asked questions about the bacteria criteria revisions to water quality Policy 1-11
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Water-quality/Water-improvement/Frequently-Asked-Questions-Policy-1-11-Bacteria-Cr
Air Quality data for Intalco Storymap
A table showing the number of days in each Air Quality Index category near Intalco
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/Research-Data/20200414-IntalcoStorymap
Ecology Water Quality Funded Aquatic Invasive Plants Grant Project Offer List for Fiscal Year 2020
List of applicants who were offered grants/loan through Ecology's Water Quality Funded Aquatic Invasive Plants Grant Project for Fiscal Year 2020
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Water-quality/Grants-and-Loans/Aquatic-Inv-Plant-Prgm/FY2020-Aquatic-Invasive-Plant
Ecology comments to EPA on proposed ozone NAAQS standard
Comments submitted to EPA on the agency's proposed ozone standards.
https://ecology.wa.gov/Asset-Collections/Doc-Assets/Air-quality/Air-quality-targets/20200929-Ecology-ozone-NAAQS-comments
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