Imagine… a healthy vibrant watershed.

Sierra Streams Institute is a watershed monitoring, research, and restoration group based in Nevada City, California, in the Sierra Nevada foothills. Our mission is to link water, science and people for the benefit of human and environmental health. Founded in 1995 as Friends of Deer Creek, SSI has grown to become an important voice in the regional scientific community—but we are still proud to call Deer Creek our home watershed.

LET'S START DOING YOUR BIT FOR THE WATERSHED. JOIN US AS A VOLUNTEER.