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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Adopted rule language (WAC 173-446)

Adopted rule language WAC 173-446

https://ecology.wa.gov/adopted-rule-language-wac-173-446-12-03-24

CFS Workshop on Draft Rule Language

Slideshow presentation

https://ecology.wa.gov/presentation-wac-173-424-12-5-and-12-11-2024

HFCs & other fluorinated greenhouse gases rulemaking

Slideshow presentation

https://ecology.wa.gov/presentation-wac-173-443-12-16-2024

Fuel Exemptions Workgroup Meeting Agendas and Summaries

Agendas and summaries from the fuel exemption workgroup meeting

https://ecology.wa.gov/fuel_exemptions_workgroup

Public comments on Cap-and-Invest linkage (Jan. 31-May 15, 2023)

Document with all comments received about linkage from Jan. 31 to May 15, 2023

https://ecology.wa.gov/linkage_comments_spring2023

Draft proposed rules changes to 173-443 WAC

draft rule language for WAC 173-443, hydrofluorocarbons

https://ecology.wa.gov/draft-rule-changes-summary-wac-173-443-1-16-25

Forest Offset Protocol Technical Working Group

Presentation deck for the Jan 7 Forest Offset Protocol Technical Working Group meeting

https://ecology.wa.gov/presentation-wac-173-446-1-7-25

Presentation (WAC 173-442) 1-27-25

This is a presentation for the January 27, 2025 public meeting for Chapter 173-443 WAC, Hydroflurocarbons rulemaking.

https://ecology.wa.gov/presentation-wac-173-443-1-27-25

Combined Community Forum: CVP & HFC Rulemaking

Presentation deck for the Jan 29 combined community forum

https://ecology.wa.gov/presentation-wac-173-434-443-1-29-25

Presentation (WAC 173-423) 1-30-25

This is a presentation for the January 30, 2025 industry focused meeting for Chapter 173-423 WAC, Clean Vehicles Program rulemaking.

https://ecology.wa.gov/presentation-wac-173-423-1-30-25

Presentation (WAC 173-423) 2-3-25

This is a presentation for the February 3, 2025 public information session for Chapter 173-423 WAC, Clean Vehicles Program rulemaking.

https://ecology.wa.gov/presentation-wac-173-423-2-3-25

Washington Climate Action

Our Climate Committment Act is creating jobs, lowering costs, fighting climate change. Learn about incentive & rebate programs; training for green jobs; and climate work happening in Washington.

https://ecology.wa.gov/washington-climate-action

Proposal Notice - CR 102 form

CR 102 for WAC 173-446

https://ecology.wa.gov/rulemaking-proposal-wac-173-446-2-12-25

Rulemaking Proposed language (WAC 173-446) 2-12-25

Proposed rule language for WAC 173-446

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-446-2-12-25

Proposed offset protocol language (WAC 173-446) 2-12-25

This is the proposed protocol language for offset rulemaking, Chapter 173-446 WAC.

https://ecology.wa.gov/proposed-offset-protocol-language-wac-173-446-2-12-25

Models & spreadsheets

Computer models predict changes and spreadsheets calculate. We offer these tools to the public.

https://ecology.wa.gov/research-data/data-resources/models-spreadsheets

GIS Data

Ecology's authoritative GIS data layers are available for download.

https://ecology.wa.gov/research-data/data-resources/geographic-information-systems-gis/data

Geographic Information Systems (GIS)

Our GIS staff maintain spatial datasets and applications, conduct GIS projects, and publish GIS maps.

https://ecology.wa.gov/research-data/data-resources/geographic-information-systems-gis

Watershed health sampling sites

Learn about the sites we sample.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/watershed-health/sampling-sites

Groundwater quality assessment

Our hydrogeologists monitor and assess groundwater quality and quantity in Washington.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment