Click here to learn about GWMA’s locally-based effort to plan and manage non-regulatory solutions for achieving ground water protection.
Subsurface Mapping & Aquifer Assessment
Click here to find study results and the latest information about GWMA’s subsurface mapping of basalts and sediments layers, and aquifer assessment.
Nitrate Programs
Click here to learn about GWMA programs designed to educate local citizens and stakeholders about nitrate and to implement recommendations of the GWMA Plan.
The Columbia Basin Ground Water Management Area or GWMA is a pro-active, voluntary, local planning effort to reduce nitrate in groundwater, and is intended to lessen the need for mandated control measures through the creation of a groundwater management plan to reduce nitrate levels in the groundwater of the GWMA.
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