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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Draft Source Test Manual (WAC 173-400; WAC 173-401) 4-9-24

This is the April 9, 2024 draft of the air quality Source Test Manual.

https://ecology.wa.gov/draft-source-test-manual-wac-173-400;-wac-173-401-4-9-24

Draft rule language (WAC 173-400) 3-18-24

This is the March 18, 2024 draft rule language for Chapter 173-400 WAC, General Regulations for Air Pollution Sources.

https://ecology.wa.gov/draft-rule-language-wac-173-400-3-18-24

Draft rule language (WAC 173-401) 3-18-24

This is the March 18, 2024 draft rule language for Chapter 173-401 WAC, Operating Permit Regulations.

https://ecology.wa.gov/draft-rule-language-wac-173-401-3-18-24

Presentation (WAC 173-400; WAC 173-401) 4-18-24

This is a presentation for the April 18, 2024 stakeholder meeting for Chapter 173-400 WAC, General Regulations for Air Pollution Sources and Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/presentation-wac-173-400;-wac-173-401-4-18-24

Presentation (WAC 173-400; WAC 173-401) 5-15-24

This is a presentation for the May 15, 2024 stakeholder meeting for Chapter 173-400 WAC, General Regulations for Air Pollution Sources and Chapter 173-401 WAC, Operating Permit Regulation.

https://ecology.wa.gov/presentation-wac-173-400;-wac-173-401-5-15-24

CCA Funds Reporting Rulemaking Public Hearing I

Presentation deck for the June 5th and 13th CCA funds reporting rulemaking public hearings

https://ecology.wa.gov/presentation-wac-173-446b-6-5-24

2024WaterBankingProviso

2024 Water Banking Proviso

https://ecology.wa.gov/water-banking-proviso

StevensCountyWaterBankProposal

Summary of Water Bank Proposal put forth by Stevens County

https://ecology.wa.gov/water-bank-proposal-summary-stevens-county

CaptionsLunchNLearn

Captions for WRIA 1 Adjudication Lunch and Learn discussing water right documents

https://ecology.wa.gov/captions-wria-1-lunchnlearn

WCBContactsList

Water Conservancy Board List of contacts for each county

https://ecology.wa.gov/wcb-contacts

LummiSettlementAgreement

Lummi Settlement Agreement, November 13, 2007

https://ecology.wa.gov/settlement-agreement-8493bf1f5852abc73b7ada93824ca106

PostcardMailerApril2024

A postcard mailer sent to WRIA 1 residents to inform them of the upcoming adjudication in May 2024

https://ecology.wa.gov/postcard-mailer-april-2024

PostcardMailerJune2024

Postcard mailer sent to WRIA 1 residents following the filing of the Nooksack Adjudication

https://ecology.wa.gov/postcard-mailer-june-2024

Rulemaking Announcement (Tug Escort Rulemaking - Chapter 363-116 WAC) 02/22/23

This is a rulemaking announcement (CR-101) for Tug Escort Rulemaking (Chapter 363-116 WAC)

https://ecology.wa.gov/rulemaking-announcement-tug-escort-rulemaking-chap

Webinar #1 Slides

Slides for Webinar #1

https://ecology.wa.gov/webinar-1-slides

Webinar #2 Slides

Slides for Webinar #2

https://ecology.wa.gov/webinar-2-slides

EIS Scoping Presentation Slides

Slides from the EIS Scoping Presentation

https://ecology.wa.gov/eis-scoping-presentation-slides

Workshop #1 Slides

Slides for Workshop #1

https://ecology.wa.gov/workshop-1-slides

Workshop #1 Slides_May 24, 2024

Workshop #1 Slides for May 24, 2024

https://ecology.wa.gov/workshop-1-slides_may-24-2024