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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NDZ supplemental letter requested by EPA

This is the letter requested of Ecology regarding the NDZ petition.

https://ecology.wa.gov/epalettervesselpumpoutavailabilityoct2016-pdf

BEACH Annual Report Summary 2004 - 2018

Beaches passing swimming standard from 2004 - 2018

https://ecology.wa.gov/table-beach-annual-report-summary

Water Quality Combined Funding SFY 2021 Final Offer List (in Excel format)

For the State Fiscal Year 2021 funding cycle of the Water Quality Combined Funding Program, this is the Final Offer List information made available in an Excel format.

https://ecology.wa.gov/sfy-2021-final-offer-list-excel-version-wqc

Water Quality Combined Funding SFY 2022 Final Offer List (in Excel format)

For the State Fiscal Year 2022 funding cycle of the Water Quality Combined Funding Program, this is the Final Offer List information made available in an Excel format.

https://ecology.wa.gov/sfy-2022-final-offer-list-excel-version-wqc

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

Stormwater Manual Handout 3

Best Management Practices handout for the stormwater management manual meetings.

https://ecology.wa.gov/swm-3

Water Quality Combined Funding SFY2019 Final Offer List

List of funded and unfunded projects seeking grant and loan funding in the State Fiscal Year 2019 cycle of the Water Quality Combined funding program.

https://ecology.wa.gov/wqc-fy19-final-offer-list-excel-version

2012 Instream Flow Recommendations for the Spokane River (WAC 173-557; 173-555) 01/27/15

2012 Instream Flow Recommendations for the Spokane River - Hal Beecher, WDFW Instream Flow Biologist May 31, 2012 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/2012-instream-flow-recommendations-for-the-spokane

Yard care fact sheet W WA English

Washington Waters Ours to Protect yard care fact sheet W WA English

https://ecology.wa.gov/yard-care-fact-sheet-w-wa-english

Yard care fact sheet W WA Spanish

Washington Waters Ours to Protect yard care fact sheet W WA Spanish

https://ecology.wa.gov/yard-care-fact-sheet-w-wa-spanish

Yard care poster W WA English

Washington Waters Ours to Protect yard care poster W WA English

https://ecology.wa.gov/yard-care-poster-w-wa-english

Yard care poster W WA Spanish

Washington Waters Ours to Protect yard care poster W WA Spanish

https://ecology.wa.gov/yard-care-poster-w-wa-spanish

Volendam Inspection Report

This is the inspection report for Volendam Cruise Line

https://ecology.wa.gov/2023-volendam

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

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

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

Estimating nitrate groundwater impacts

We developed a method to estimate groundwater nitrate impacts from nutrients and fertilizers.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/nitrates-and-groundwater-quality-tool

Sumas-Blaine surficial aquifer long-term ambient groundwater monitoring

We sample 25 wells in the Sumas-Blaine aquifer annually for nitrate, chloride, and bromide.

https://ecology.wa.gov/research-data/monitoring-assessment/groundwater-quality-assessment/active-studies-index/sumas-blaine

Watershed health sampling schedules

See when our crews will be collecting data on the health of watersheds at sites across the state.

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

Watershed health monitoring

We monitor the regional health of rivers and streams in watersheds throughout the state.

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