Groundwater Assessment

Groundwater Assessment

Underway Groundwater Studies describes the Environmental Assessment Program's current groundwater-focused projects.

Groundwater sampling

General Groundwater Information

Groundwater Portal provides access to groundwater information from throughout the agency.

Ground Water Quality is a page that describes groundwater, groundwater pollution, and why it matters.

Groundwater Data

The Groundwater Data Center is part of Ecology's Environmental Information Management system. It contains groundwater information and monitoring data collected by Ecology and affiliates like local governments and cleanup-site managers.

Groundwater Publications

Groundwater Publications gives instructions for how to search and download documents from our state groundwater report collection.

Environmental Assessment Program Standard Operating Procedures for Groundwater Monitoring describe the field methods we use during our groundwater studies.

Groundwater Technical Resources

Groundwater Resources is a page with links to publications and resources related to groundwater and hydrogeology in Washington State.

Contact us for more information on any of these topics.


Well Log Viewer

Groundwater News

Water Right Map Search

Groundwater at Hanford Nuclear Reservation

Recent Studies
and Publications

new Shelton Laundry and Cleaners Groundwater Monitoring Results from May 2014

N Dynamics at a Manured Grass Field Overlying the Sumas-Blaine Aquifer in Whatcom Co.

Spreadsheet models for determining the influence of land applications of fertilizer on underlying groundwater nitrate concentrations