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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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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