This website is an online library resource that provides access to watershed information for the Upper American River Region. The region encompasses the watersheds of the South Fork, Middle Fork and North Fork of the American River, as well as the Bear River, which is linked to the American River Basin through a system of canals developed in the Gold Rush era and continuing to provide water throughout the region.

The American River Watershed Portal is established and maintained through collaboration and coordination between government agencies, irrigation districts, resource conservation districts, and residents of the watershed.