Research & Data

Computer models mathematically represent part of the environment to predict potential changes.

Whole effluent toxicity testing ensures wastewater does not harm aquatic life.

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

We analyze freshwater fish for various toxic chemicals.

We use models to predict water quality changes to help find strategies to address pollution.

Computer models predict changes and spreadsheets calculate. We offer these tools to the public.

We use aerial photos and data from our monitoring stations and ferries to report on Puget Sound.

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

Does salmon habitat restoration work? Our Intensively Monitored Watersheds program aims to find out.

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

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

The Freshwater Quality Index can help you learn about river and stream health.

Ecology's authoritative GIS data layers are available for download.

Access to discrete and time-series environmental data for air, water, soil, sediment, aquatic animals, and plants.

Learn about Ecology's scientific research and services.

Information on Ecology's public hearings, meetings, workshops, open houses, and open comment periods.

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.

This is the gateway to Ecology's many web-accessible databases and tools.

Look up information on facilities and sites of interest to the Department of Ecology.

Look up industrial section permits with hyperlinks to all documents currently available electronically. You can view active or proposed permits and associated documents: