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.
Pend Oreille County request for ECY SEPA lead
Pend Oreille County Commissioners' letter requesting Ecology take the lead agency role in Environmental review of PacWest Silicon’s proposal
https://ecology.wa.gov/po-county-to-ecy-request-lead-agency-status
BEACH Annual Report Summary 2004 - 2018
Beaches passing swimming standard from 2004 - 2018
https://ecology.wa.gov/table-beach-annual-report-summary
Rulemaking Announcement (WAC 173-50) 10/10/22
This is a rulemaking announcement (CR-101) for WAC 173-50 Accreditation of Environmental Laboratories.
https://ecology.wa.gov/rulemaking-announcement-wac-173-50-10-10-22
Applicant List for the SFY 2021 WQC funding cycle
WQC funding cycle SFY 2021 applicant list
https://ecology.wa.gov/wqcsfy2021applicantlist
MTCAStat97: Backgound Module
A statistical analysis tool / workbook for analyzing background data for sites cleaned up under the Model Toxics Control Act.
https://ecology.wa.gov/mtcastat97backgroundmodule
MTCAStat97: Site Module
A statistical analysis tool / workbook for calculating compliance statistics for sites cleaned up under the Model Toxics Control Act.
https://ecology.wa.gov/mtcastat97sitemodule
Freshwater Algae Control Grant Program - SFY 2021 Final Offer List
For the Fresh Water Algae Control grants funding program, this is the State Fiscal Year 2021 Final Offer List showing which projects will be offered funding and how much is being offered to them.
https://ecology.wa.gov/sfy-2021-freshwater-algae-control-program-offer-li
MTCASTtat97: Technical supplement #1
Statistical guidance for using MTCAStat97 for sites cleaned up under the Model Toxics Control Act.
https://ecology.wa.gov/mtcastattechsupplement
Silver Muse, SilverSea Cruises inspection report
This document is the wastewater discharges inspection report for Silver Muse, SilverSea Cruises Line.
https://ecology.wa.gov/silver-muse-silversea-cruises-inspection-report
Package A - Natural Attenuation Tool (Modules 1,2,3)
A calculation tool for demonstrating natural attenuation of groundwater is occurring and help predict when groundwater cleanup levels will be met under the Model Toxics Control Act.
https://ecology.wa.gov/pkganaturalattenuation
Package B - Natural Attenuation (Modules 4,5,6)
A calculation tool for demonstrating natural attenuation of groundwater is occurring and help predict when groundwater cleanup levels will be met under the Model Toxics Control Act.
https://ecology.wa.gov/pkgbnaturalattenuation
Preliminary Decisions Presentation (WAC 173-201A)
This is a public webinar presentation about the preliminary decisions to revise water contact recreational use criteria in the surface water quality standards (WAC 173-201A).
https://ecology.wa.gov/preliminary-decisions-presentation-wac-173-201a
401 certification process for aquaculture
A flowchart for shellfish growers to help them navigate the current Section 401 water quality certification and permitting process.
https://ecology.wa.gov/shellfish-aquaculture-401-flowchart
Stormwater Manual Handout 3
Best Management Practices handout for the stormwater management manual meetings.
https://ecology.wa.gov/swm-3
Water Quality Combined funding program State Fiscal Year 2023 Applicant Workshop Notice
This is the announcement and detailed information for the Water Quality Combined funding program's State Fiscal Year 2023 Applicant Workshop for anyone wanting to apply for loan or grant funding from the Water Quality Combined funding program in this next application cycle.
https://ecology.wa.gov/wqc-fy2019-applicant-workshop-notice
Septic fact sheet W WA
Washington Waters Ours to Protect septic fact sheet W WA
https://ecology.wa.gov/septic-fact-sheet-w-wa
Manure fact sheet W WA
Washington Waters Ours to Protect manure fact sheet W WA
https://ecology.wa.gov/manure-fact-sheet-w-wa
Septic poster W WA English
Washington Waters Ours to Protect septic poster W WA English
https://ecology.wa.gov/septic-poster-w-wa-english
Manure poster
Washington Waters Ours to Protect manure poster W WA
https://ecology.wa.gov/manure-poster-w-wa
Northeast West Plains PFAS March 2024 well sampling results meeting slides
Download the slides for the 6/6/24 NE West Plains drinking water sampling results meeting
https://ecology.wa.gov/west-plains-pfas-sampling-results-slides
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