site map

Our work is divided into six program areas

To learn more about a program, move your cursor over the appropriate image above. For a more complete description of a program and its related projects, click the coressponding image.
Q: Why are insects crawling over this page?
A: These benthic macroinvertebrates (bottom-dwelling stream bugs big enough to see without a microscope) tell us a great deal about water quality.

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.


Our featured publication:

The Bug Book
Bug Book

A Guide to the Identification of Common Aquatic Benthic Macroinvertebrate Families of California and Western North America

The newest edition of our noted identification guide. Learn more and buy the book.

News & Notices
  • Bear River near highway 174
    The Centennial Dam
    Yes, SSI does have a position on the proposed dam: follow the data. Read our letter to the Army Corps of Engineers.
  • Grizzly Hill DROPS project
    Grizzly Hill DROPS project
    Devin Cormia, co-director of SSI education, explains how the raingarden works to Grizzly Hill second-graders. Check out The Union's article to learn more about the project.
Learn more about our current projects
Sign up for our email newsletter >>
Get your hands wet!
We have many opportunities for participating in citizen science and restoration projects. Click one of the buttons to the right or visit our Get Involved page.
Volunteer Amphibian monitoring portal