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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Rulemaking Adoption Notice (WAC 173-566) 06/25/2019

This is a rulemaking adoption (CR-103) for WAC 173-566 Streamflow Restoration Funding

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-566-06-25-201

Watershed Heatlh Monitoring randomly chosen sites from 2009 - 2017

Data tables for map here: https://waecy.maps.arcgis.com/apps/webappviewer/index.html?id=7b90d34357484848a46076ee220fbffc

https://ecology.wa.gov/table-watershed-health-random-sites

RAC Workshop Agenda (WAC 173-219) 11/30/15

Reclaimed Water Rulemaking Advisory Committee (RAC) Workshop Agenda - November 30, 2015

https://ecology.wa.gov/rac-agenda-wac-173-219-11-30-15

RAC Presentation (WAC 173-219) 11/03/14

Presentation from November 3, 2014 RAC Meeting for the Reclaimed Water Rulemaking

https://ecology.wa.gov/rac-presentation-wac-173-219-11-03-14

RAC Presentation (WAC173-219) 02/16/17

Reclaimed Water Rule Making Advisory Committee (RAC) - February 16, 2017 Meeting Presentation

https://ecology.wa.gov/rac-presentation-wac173-219-02-16-17

RAC Working Draft (WAC 173-219) 03/15/17

Reclaimed Water Rule Making Advisory Committee (RAC) - Working draft of rule language for March 15, 2015.

https://ecology.wa.gov/rac-working-draft-wac-173-219-03-15-17

Rulemaking Adoption Notice (WAC 173-219) 01/23/18

This is a rulemaking adoption (CR-103) for WAC 173-219 Reclaimed Water

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-219-01-23-18

SEPA Checklist and DNS

State Environmental Policy Act (SEPA), checklist, and Determination of Non-Significance (DNS)

https://ecology.wa.gov/sepa-checklist-and-dns-wac-173-219-01-23-18

Withdrawal Notice (WAC 173-219) Dec. 23, 2015

Withdrawal Notice for Proposal Notice Continuance filed on Aug. 17, 2015 and Proposal Notice filed on June 22, 2015

https://ecology.wa.gov/withdrawal-notice-wac-173-219-12-23-15

Columbia River reports & documents

Our Office of Columbia River scientific reports and documents support water supply projects for Eastern Washington

https://ecology.wa.gov/research-data/scientific-reports/columbia-river-reports

River & stream water quality monitoring

We monitor water quality at nearly 100 river and stream stations throughout the state.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/water-quality-monitoring

Find groundwater publications

Map and text-based methods for searching for groundwater-related reports for Washington.

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

River & stream flow monitoring methods

We measure water's width, depth, and speed in rivers and streams to compute streamflow.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/flow-monitoring/river-stream-flow-monitoring-methods

Habitat monitoring methods

We monitor the health of streams by measuring the health of habitat, water, and sediment chemistry.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/habitat-monitoring-methods

Water quality monitoring methods for rivers & streams

Learn how we measure water quality in rivers and streams, including methods and parameters.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/water-quality-monitoring/river-stream-monitoring-methods

Using river & stream water quality data

Learn how to find and understand water quality data from rivers and streams across the state.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/water-quality-monitoring/using-river-stream-water-quality-data

Contaminants in lake sediment cores

We age-date sediment cores from three lakes per year to assess contaminant deposition trends.

https://ecology.wa.gov/research-data/monitoring-assessment/toxics-monitoring/contaminants-in-sediment-cores

Forest practices effectiveness monitoring

We evaluate whether forest practices rules protect fish, wildlife, and water quality.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/forest-practices-effectiveness-monitoring

River & stream data quality assurance

See river and monitoring quality assurance plans, documents, and methods.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/water-quality-monitoring/river-stream-data-quality-assurance

Stream biological monitoring

We evaluate the health of rivers and streams by studying multiple aquatic communities.

https://ecology.wa.gov/research-data/monitoring-assessment/river-stream-monitoring/habitat-monitoring/stream-biological-monitoring