Research & Data

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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.

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SFY2017 Water Quality Funding EAGL Applicant Prep Tool
Prepatory assistance for the water quality funding application (fiscal year 2017))
https://ecology.wa.gov/sfy2017-water-quality-funding-eagl-applicant-prep
Department of Ecology Environmental Review/SERP Determinations for SRF Funded Projects
Ecology will review all SERP packages before financing a project. Ecology’s SERP Determinations will be posted on this website. Please direct any comments or questions about the projects listed here to Liz Ellis, Environmental Review Coordinator at (360) 407-6429 or liz.ellis@ecy.wa.gov
https://ecology.wa.gov/serp-determinations
SEPA DNS and request for scope (WAC 173-201A) 9/30/14
This is teh SEPA DNS and request for scope for WAC 173-201A Water quality standards for surface waters of the state of Washington.
https://ecology.wa.gov/sepa-dns-and-request-for-scope-wac-173-201a-9-30
Rulemaking-Adoption-Notice-(WAC-173-228)-04-09-18
This is the rule making adoption (CR-103) for WAC 173-228 No discharge zone
https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-228-04-09-18
Rulemaking proposed language (WAC 173-201A) 3/24/21
This is the proposed rule language for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-3-24-2
Rulemaking proposed language (WAC 173-201A) 10/18/21
This is proposed rule language for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-10-18-21
Rulemaking proposed language (WAC 173-224) 03/16/21
This is proposed rule language for (WAC 173-224) Water Quality Permit Fee
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-224-03-16-2
Ecology Water Quality Funded Activity Projects Instructions for Getting 12 Digit HUC from Google Earth
Ecology Water Quality Funded Activity Projects Instructions for Getting 12 Digit HUC from Google Earth
https://ecology.wa.gov/section-319-instructions-for-getting-12-digit-huc
Ecology Water Quality Funded Activity Projects Instructions for Getting 12 Digit HUC from ArcReader
Ecology Water Quality Funded Activity Projects Instructions for Getting 12 Digit HUC from ArcReader
https://ecology.wa.gov/section-319-instructions-for-getting-12-digit-hucs
Rulemaking proposed language (WAC 173-230) 03/12/19
This is proposed rule language for WAC 173-230
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-230-03-1
Ecology Water Quality Funded Activity Projects Load Reduction Reporting Overview
Ecology Water Quality Funded Activity Projects Load Reduction Reporting Overview
https://ecology.wa.gov/section-319-load-reduction-reporting-overview
Ecology Water Quality Funded Activity Projects STEPL Load Reduction Tool Overview
Ecology Water Quality Funded Activity Projects STEPL Load Reduction Tool Overview
https://ecology.wa.gov/section-319-stepl-loan-reduction-tool-overview
Rulemaking proposed language (WAC 173-219) Aug. 23, 2017
This is proposed rule language for WAC 173-219 Reclaimed Water
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-219-08-23-1
Phosphorous Sequestration Data Reporting Template
Aluminum Monitoring Data Reporting Template for APAM General Permit
https://ecology.wa.gov/s6-b-phosphorous-sequestration
Sediment Impact Zone Application for Grays Harbor
Burrowing shrimp document: Sediment Impact Zone Application for Grays Harbor
https://ecology.wa.gov/sediment-impact-zone-application-for-grays-harbor
Settlement Agreement for CSWGP
CSWGP October 27, 2016 Settlement Agreement
https://ecology.wa.gov/settlement15-142-11-1-16
Sand & Gravel General Permit 2016
The Sand and Gravel General Permit regulates discharges of process water, stormwater, and mine dewatering water into waters of the state.
https://ecology.wa.gov/sandandgravelpermit2016
Sand and Gravel General Permit 2011 Antidegradation Plan
Tier II Antidegradation Plan. A Tier II analysis is required when new or expanded actions are expected to cause a measurable change in the quality of a receiving water that is of a higher quality than the criterion designated for that waterbody [WAC 173-201A-320(1)].
https://ecology.wa.gov/sandantideg081711
ulemaking proposed language (WAC 173-201A) 5/10/24
This is proposed rule language for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-5-10-24
Rulemaking proposed language (WAC 173-201A) 09/17/2024
This is proposed rule language for WAC 173-201A - Water Quality Standards for Surface Waters of the State of Washington
https://ecology.wa.gov/rulemaking-proposed-language-wac-173-201a-09-17-2024
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