- Downloads | Subsurface Mapping and Aquifer Assessment

About GWMA

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.

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Basalt Reports, Maps & Cross Sections

In this main folder you will find the Basalt Report w/two subfolders for the Basalt Maps and Basalt Cross Sections. Each of the subfolders will contain large files that will be listed on muliple pages that can be accessed at the bottom of each page.

ATTENTION, PLEASE READ BELOW:

These files are very large in size and may take a while to load depending on your internet connection. Some dialup users may not be able to download these documents, but can contact us by phone at 509-488-3409 to receive a cd by postal mail.