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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Air Quality Index (AQI)

The Air Quality Index (AQI) tells you when air quality is healthy or unhealthy.

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

Marine water & sediment monitoring

We conduct water and sediment long-term monitoring to identify ecosystem changes.

https://ecology.wa.gov/research-data/monitoring-assessment/puget-sound-and-marine-monitoring

River and stream flow monitoring

We report the amount of water flowing through Washington’s rivers and streams using graphs and maps.

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

Habitat monitoring

We collect data on the health of environmental systems that support plant and animal life.

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

Long-term marine water & sediment data

We gather high quality data to help accurately reflect changes in marine environments over time.

https://ecology.wa.gov/research-data/monitoring-assessment/puget-sound-and-marine-monitoring/water-column-data

GIS standards

Find standards for Ecology's GIS data.

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

Streamflow monitoring contacts

Contact the stream hydrologist assigned to your watershed.

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

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

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

Focus on: Washington’s climate policies and fuel prices

On Jan. 1, 2023, two new Washington laws designed to reduce greenhouse gas emissions took effect: the Clean Fuel Standard (CFS) and the Climate Commitment Act (CCA).

https://ecology.wa.gov/focus-on-washington-s-climate-policies-and-fuel-pr

Goldendale Environmental Impact Statement (EIS) summary

Ecology released the final Environmental Impact Statement (EIS) for the Goldendale Energy Storage Project. The EIS examines significant adverse environmental impacts if the project is built. The document also identifies if those impacts may be reduced or eliminated through mitigation measures.

https://ecology.wa.gov/goldendale-eis

Story Maps: Sediment Quality in Puget Sound

This series of colorful, interactive story maps describes the work of our Marine Sediment Monitoring Team. These scientists conduct long-term monitoring to assess and determine change over time in the condition of Puget Sound sediments and the animals that live in them.

https://ecology.wa.gov/sediment-story-map

Accessibility & the Americans with Disabilities Act ADA

We are committed to providing information and services that are accessible to people with disabilities. We provide accommodations for the public, Ecology employees, and job applicants.

https://ecology.wa.gov/ada-accessibility-the-americans-with-disabilities

Cleanup project: Clean Earth Burlington

Clean Earth/Burlington, located within the Port of Camas in Washougal, WA, is currently undergoing a formal dangerous waste cleanup process at their site. The company is publicly known as Clean Earth, legally named Burlington Environmental, and is a subsidiary of PSC Environmental Services.

https://ecology.wa.gov/cleanup-project-clean-earth-burlington

Cleanup site: Olalla Landfill

Kitsap County Public Works Solid Waste Division, Kitsap Public Health District, and Ecology are working together to complete the first Five-Year Periodic Review for Olalla Landfill.

https://ecology.wa.gov/olalla-landfill

Publication index: Wetlands information

List of links to publications related to wetlands.

https://ecology.wa.gov/wetlands-publications

Burlington Environmental-Georgetown, Seattle cleanup site

Burlington Environmental-Georgetown in Seattle consists of two sites, one to the east of Fourth Avenue South (known as “East of 4th”), and one to the west (known as “West of 4th”)

https://ecology.wa.gov/cleanup-site-burlington-environmental-georgetown

Section 401 water quality & CZM federal consistency decisions

See our recent decisions on Section 401 water quality and CZM federal consistency.

https://ecology.wa.gov/401-and-czm-decisions

Data model - CO2SYS Version 24

A calculator for the CO2 system in seawater written in Excel/VBA. This Excel/VBA version included in the comparison of ten packages by Orr et al. (2015)

https://ecology.wa.gov/co2sys-version-24-zip

Ecology Water Quality Funded Activity Projects Zip File of ArcReader Map Layer for 12 Digit HUC Lookup

Description for the Ecology Water Quality Funded Activity Projects Zip File of ArcReader Map Layer for 12 Digit HUC Lookup

https://ecology.wa.gov/arcreader-map-layer-for-12-digit-hucs-zipfile