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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Modeling the environment
Computer models mathematically represent part of the environment to predict potential changes.
Wastewater testing
Whole effluent toxicity testing ensures wastewater does not harm aquatic life.
Habitat monitoring
We collect data on the health of environmental systems that support plant and animal life.
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.
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.
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
Monitoring watersheds for salmonids
Does salmon habitat restoration work? Our Intensively Monitored Watersheds program aims to find out.
Forest practices effectiveness monitoring
We evaluate whether forest practices rules protect fish, wildlife, and water quality.
Stream biological monitoring
We evaluate the health of rivers and streams by studying multiple aquatic communities.
River & stream water quality index
The Freshwater Quality Index can help you learn about river and stream health.
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.
Environmental Assessment Program
Learn about Ecology's scientific research and services.
Public input and events listing
Information on Ecology's public hearings, meetings, workshops, open houses, and open comment periods.
Rulemaking at Ecology
Ecology has delegated federal and state authority to implement and enforce various environmental laws and rules. We accomplish this through our open and public rulemaking process.
Online tools & databases
This is the gateway to Ecology's many web-accessible databases and tools.
Facility/Site database
Look up information on facilities and sites of interest to the Department of Ecology.
Industrial Permits - look-up tool
Look up industrial section permits with hyperlinks to all documents currently available electronically. You can view active or proposed permits and associated documents:
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