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.
Guidance for Completing the Clean Water funding (CWSRF) Initial Data Reporting Sheet
Guidance to help funding receipients complete the CWSRF Initial Data Reporting Sheet.
https://ecology.wa.gov/guidance-for-completing-the-cwsrf-initial-data-rep
Guidance for Davis-Bacon Compliance
Applicant guidance for water quality loans through the Department of Ecology
https://ecology.wa.gov/guidance-for-davis-bacon-compliance
Guidelines for Enhancing Public Awareness of SRF Assistance Agreements
EPA memo that provides implementation guidelines for public awareness efforts to promote water quality funding programs.
https://ecology.wa.gov/guidelines-for-enhancing-public-awareness-of-srf-a
How to determine your BMP's 12-digit hydrologic unit code
Instructions for using Google Earth to find your hydrologic unit code.
https://ecology.wa.gov/how-to-determine-your-bmp-s-12-digit-hydrologic-un
IGEA requirements overview
An Investment Grade Efficiency Audit is a requirement of state infrastructure funding
https://ecology.wa.gov/igea-requirements-overview
HHC Statement 070221
This statement given July 2, 2021 is about the EPA motion on the Human Health Criteria for Washington
https://ecology.wa.gov/hhc-statement-070221
Director Bellon Letter to Admin. Wheeler about HHC proposal
This is a letter requesting the EPA hold consultation with Ecology on the Human Heath Criteria upcoming proposed EPA rule.
https://ecology.wa.gov/hhc_hearings_letter_wheeler
Human Health Criteria Alternatives
Water Quality Policy 1-11 Updates to Human Health Criteria February 2017
https://ecology.wa.gov/hhc_alternatives020217
Water Quality Assessment/Policy 1-11 Updates Human Health Criteria Alternatives
Proposed Human Health Criteria Alternatives by Ecology March 2017
https://ecology.wa.gov/hhc-tissuealternative_032017
Policy 1-11 Public Dialogue Listings based on Human Health Criteria December 2016
This is a 2017 issue paper about tissue regarding the Water Quality Assessment/Policy 1-11 Updates Human Health Criteria Alternatives
https://ecology.wa.gov/hhctissueissuepaperpolicy1-11
Industrial Stormwater General Permit Frequently Asked Questions
This FAQ outlines questions and answers that Industrial Stormwater General Permit holders may find helpful. This document is intended as guidance only, and does not modify or otherwise change the permit requirements in the Industrial Stormwater General Permit.
https://ecology.wa.gov/industrial-stormwater-general-permit-faq
Hydro Battery Pearl Hill Water Quality Certification application & public notice
Application for State of Washington water quality certification for Hydro Battery Pearl Hill.
https://ecology.wa.gov/hydro-battery-pearl-hill-wqc-application-public
TDG Hearing Presentation 9/16/19
Presentation at public hearing in Vancouver, WA on proposed revisions to WAC 173-201A
https://ecology.wa.gov/tdg-hearing-presentation
Hydro Bioinfiltrator Equivalent
Ecology finds Hydro Bioinfiltrator functionally equivalent to a bioretention planter or planter box.
https://ecology.wa.gov/hydro-bioinfiltrator
Hull Cleaning Advisory flyer
Use this guidance poster to encourage boatyard cleaning instead of underwater cleaning of boats.
https://ecology.wa.gov/hull-cleaning-advisory-flyer
CSWGP High Turbidity/Low Transparency Reporting
Sites covered under the Construction Stormwater General Permit (Permit) must take specific reporting and adaptive management actions in order to comply with permit requirements when obtaining high turbidity results (greater than or equal to 250 Nephelometric Turbidity Units (NTUs)) or low transparency results (less than or equal to 6 centimeters).
https://ecology.wa.gov/highturbidity
2017 Annual Report for Herrold Fish & Oyster
Annual report reviews Zostera Japonica controls on commercial clam beds in Willapa Bay for Herrold Fish & Oyster.
https://ecology.wa.gov/herrold-3009-annual-report
2017 Annual Report for Heckes Clams
Annual report reviews Zostera Japonica controls on Willapa Bay for Heckes Clams.
https://ecology.wa.gov/heckes-3010-annual-report
2018 pretreatment plan for Heckes
2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Heckes.
https://ecology.wa.gov/heckes-2018-pretreatment-plan
2018 Pretreatment Plan for Herrold
2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Herrold.
https://ecology.wa.gov/herrold-2018-pretreatment-plan
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