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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Water quality
Establishing Benthic Index of Biotic Integrity (B-IBI) Thresholds for Use in the Water Quality Assessment
This information is intended to provide rationale for the 2014 Water Quality Assessment submittal to the Environmental Protection Agency (EPA) regarding B-IBI thresholds used for assessment of B-IBI data.
https://ecology.wa.gov/wqab-ibirationale
Withdrawal Notice (WAC 173-201A) 9/11/2012
This is the withdrawn rulemaking announcement (CR 101) for WAC 173-201A Water quality standards for surface waters of the state of Washington.
https://ecology.wa.gov/withdrawal-notice-wac-173-201a-9-11-2012
Workshop Agenda Nov. 14
Agenda for the Nov. 14 Workshop on PCB Variances for Spokane River Dischargers
https://ecology.wa.gov/workshop-agenda-nov-14
Ecology Water Quality Combined Funding Program Fiscal Year 2018 Draft Offer List Appendix 1F
Appendix 1F of the Ecology Water Quality Combined Funding Program Fiscal Year 2018 Draft Offer List
https://ecology.wa.gov/wqc-fy18-appendix-1f-for-draft-offer-list
Ecology Water Quality Combined Funding Program Fiscal Year 2018 Timeline
Fiscal Year 2018 Timeline for the Ecology Water Quality Combined Funding Program
https://ecology.wa.gov/wqc-fy18-funding-cycle-timeline
Ecology Water Quality Combined Funding Program Fiscal Year 2019 EAGL Application Prep Tool
This tool will help you prep your EAGL Application for an Ecology Water Quality Combined Funding Program grant for Fiscal Year 2019
https://ecology.wa.gov/wqc-fy19-eagl-prep-tool
Water Quality Combined Funding Program - Recipient Training - Cultural Resources Session
For funding recipients of our Water Quality Combined Funding Program, this is the Cultural Resources part of the Recipient Training workshop
https://ecology.wa.gov/wqc-recipient-training-cultural-resources-session
Water Quality Combined Funding Program - Recipient Training - Environmental Review for Loans
For funding recipients of our Water Quality Combined Funding Program, this is the Environmental Review for loan funded project types part of the Recipient Training workshop
https://ecology.wa.gov/wqc-recipient-training-environmental-review-sessio
Water Quality Combined Funding Program - Recipient Training - Nonpoint Sessions 1 & 2
For funding recipients of our Water Quality Combined Funding Program, this is the Nonpoint project type part of the Recipient Training workshop
https://ecology.wa.gov/wqc-recipient-training-nonpoint-sessions-1-2
Water Quality Combined Funding Program - Recipient Training - Stormwater Session 1
For funding recipients of our Water Quality Combined Funding Program, this is the Stormwater project type part of the Recipient Training workshop
https://ecology.wa.gov/ecology-water-quality-combined-funding-program-3
Water Quality Combined Funding Program - Recipient Training - Stormwater Session 2
For funding recipients of our Water Quality Combined Funding Program, this is the Stormwater project type part of the Recipient Training workshop
https://ecology.wa.gov/wqc-recipient-training-stormwater-session-2
Water Quality Combined Funding Program - Recipient Training - Stormwater Session 2
For funding recipients of our Water Quality Combined Funding Program, this is the Stormwater project type part of the Recipient Training workshop
https://ecology.wa.gov/wqc-recipient-training-stormwater-session-3
Water Quality Combined Funding Program Recipient Training - Wastewater Session 1
For funding recipients of our Water Quality Combined Funding Program, this is the Wastewater Facility project type part of the Recipient Training workshop
https://ecology.wa.gov/ecology-water-quality-combined-funding-program-5
Water Quality Combined Funding Program Recipient Training - Wastewater Session 2
For funding recipients of our Water Quality Combined Funding Program, this is the Wastewater Facility project type part of the Recipient Training workshop
https://ecology.wa.gov/wqc-recipient-training-wastewater-session-2
WQ Web Portal Step by Step Instructions
Use this step by step guide with screenshots to learn how to sign up and use the water quality web portal.
https://ecology.wa.gov/wq-web-portal-instrcutions
Ecology Water Quality Combined funding program - Fiscal Year 2020 Applicant Workshop - Facility Session
The Wasterwater Facility session for the Water Quality Combined funding cycle - Fiscal Year 2020 Applicant Workshop
https://ecology.wa.gov/wqc-fy2019-applicant-workshop-facility-session
Ecology Water Quality Combined funding program - Fiscal Year 2020 Applicant Workshop - Hardship Session
Hardship session for the Water Quality Combined funding program's Fiscal Year 2020 Applicant Workshop
https://ecology.wa.gov/wqc-fy2019-applicant-workshop-hardship-session
Ecology Water Quality Combined funding program - Fiscal Year 2020 Applicant Workshop - Stormwater Session
The Stormwater session for the Water Quality Combined funding program - Fiscal Year 2020 Applicant Workshop
https://ecology.wa.gov/wqc-fy2019-applicant-workshop-stormwater-session
Ecology Water Quality Combined funding program - Stormwater session's Applicantion specific added session
This is the Ecology Water Quality Combined funding program's Applicant Training workshop, the Stormwater projects breakout session for Application specific guidance
https://ecology.wa.gov/wqc-applicant-workshop-stormwater-session-added-se
Ecology Water Quality Combined Fiscal Year 2019 Applicant Workshop Funding Terms and Conditions
Ecology Water Quality Combined Fiscal Year 2019 Applicant Workshop Funding Terms and Conditions
https://ecology.wa.gov/wqc-fy2019-applicant-workshop-funding-terms-and-co
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