Research & Data

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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Wastewater testing
Whole effluent toxicity testing ensures wastewater does not harm aquatic life.
Modeling the environment
Computer models mathematically represent part of the environment to predict potential changes.
Habitat monitoring
We collect data on the health of environmental systems that support plant and animal life.
Ecology's blog
Our blog posts tell how Ecology works to protect Washington’s environment and quality of life. We strive to promote the wise management of our air, land and water for the benefit of current and future generations.
Freshwater fish contaminant monitoring
We analyze freshwater fish for various toxic chemicals.
Models and tools for water quality improvement
We use models to predict water quality changes to help find strategies to address pollution.
Water Quality Combined - Recipient Training - Contacts List
For funding recipients of our Water Quality Combined Funding Program, this is the list of contacts associated to the Recipient Training workshop.
Freshwater Aquatic Plants Manual
An illustrated guide to some of the more common freshwater aquatic plants found in Washington, such as hydrilla, milfoil, pondweeds, bladderworts, and more.
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
Models & spreadsheets
Computer models predict changes and spreadsheets calculate. We offer these tools to the public.
Eyes over Puget Sound
We use aerial photos and data from our monitoring stations and ferries to report on Puget Sound.
Water Quality Combined funding program State Fiscal Year 2020 Applicant Workshop Notice
This is the announcement and detailed information for the Water Quality Combined funding program's Fiscal Year 2020 Applicant Workshop for anyone wanting to apply for loan or grant funding from the Water Quality Combined funding program in this next application cycle.
Applicant Prep Tool for Water Quality Combined Funding Applications in EAGL
This is the Applicant Prep Tool document for people applying for funding via a Water Quality Combined funding program application in EAGL.
Water Quality Combined funding program - Recipient Training - Resources List
For funding recipients of our Water Quality Combined Funding Program, this is the resources list for the Recipient Training workshop.
Monitoring watersheds for salmonids
Does salmon habitat restoration work? Our Intensively Monitored Watersheds program aims to find out.
River & stream water quality index
The Freshwater Quality Index can help you learn about river and stream health.
Stream biological monitoring
We evaluate the health of rivers and streams by studying multiple aquatic communities.
Forest practices effectiveness monitoring
We evaluate whether forest practices rules protect fish, wildlife, and water quality.
GIS Data
Ecology's authoritative GIS data layers are available for download.
Environmental Information Management System (EIM) - search data
Access to discrete and time-series environmental data for air, water, soil, sediment, aquatic animals, and plants.
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