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.
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
Eyes over Puget Sound
We use aerial photos and data from our monitoring stations and ferries to report on Puget Sound.
Models & spreadsheets
Computer models predict changes and spreadsheets calculate. We offer these tools to the public.
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.
QA planning process for NEP grantees
Printable and accessible PDF version of a flowchart showing the approval process for Quality Assurance Project Plans for National Estuary Program grantees.
BEACH annual report
See our annual county-by-county report on bacterial levels at saltwater swimming beaches for 2019.
Marine Water Condition Index
The Marine Water Condition Index is a way to assess the health of harbors, bays, and Puget Sound.
Marine water quality long-term trends
Learn about conditions in 2015 that produced mixed results for marine water quality.
Scientific descriptions of species: benthic invertebrates in Puget Sound
We study creatures in Puget Sound sediments. We classify them to observe marine habitat changes.
Marine algae & plankton
Marine algae blooms are overgrowths of plankton. They can look like a spill in the water.
1921 results 1 - 20 of 1921   Next page