Washington Environmental Information Management (EIM) Database
Washington Dept. of Ecology database to search, view and download environmental monitoring data for water, sediment, groundwater, river/stream water quality and streamflow statewide.
ecology.wa.gov
At a glance
- Region
- United States (North America)
- Coverage
- Washington State
- Access
- Free
- Category
- Government
- Last updated
- 2026
What's inside
- Water quality
- Streamflow
- Groundwater
- Sediment
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: Water quality
- 02
Compliance checks
Compare samples against drinking water and discharge standards.
- 03
Design flows
Estimate 1-in-50 and 1-in-100 year floods for bridges, culverts and spillways.
Because it has: Streamflow
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
- 02
Anomaly alerts
Catch sudden spikes in sensor or lab data automatically.
- 03
Flow forecasting
Train LSTM-style models on past records to forecast river levels and flow days ahead.
Related water data
- Delaware River Basin CommissionNorth America | Free
- Iowa Water Quality Information System (IWQIS)North America | Free
- Maine EGAD Environmental Sampling DatabaseNorth America | Free
- Michigan EGLE Maps & Data HubNorth America | Free
- Minnesota DNR/MPCA Cooperative Stream GagingNorth America | Free
- Oklahoma Water Resources Board Groundwater Data & MapsNorth America | Free
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