ARC/INFO export format (about 813 Kb in gzip tar format)

ArcView Shape format (about 775 Kb in gzip tar format)

Spatial Data Transfer Standard (SDTS) format (about 653 Kb in gzip tar format)

Metadata documentation for origin, extent, and thickness of Quaternary geologic units in the Willamette Basin, Oregon

Willamette Basin GIS Data
Report: Ground-Water and Water-Chemistry Data for the Willamette Basin, Oregon
Willamette Basin Ground-Water Study Home Page
Oregon District Home Page