American River Watershed & Lake Tahoe

Most rivers in California have been changed by mining, water control, and the introduction of new species. Professor Erika Zavaleta of UC Santa Cruz explains the history and biology of California’s watersheds. She also presents current watershed management issues.

Dammed Disrupted Salmon

First published May 23, 2017 When responding to the urge to spawn, Salmon become a powerful delivery system. If allowed to move freely through rivers and streams, they transport ocean nitrogen and other nutrients thousands of miles inland while providing humans and animals with a rich source of food. They did this successfully until man decided to industrialize their reproduction. …