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 promote community stewardship and scientific knowledge of watersheds through monitoring, research, restoration, and education. 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
  • Sierra Streams Nature Camps! We are excited to offer our second year of summer camps for youth! Budding ecologists or kids just looking to have a great week will have a chance to not only enjoy the natural playground around them but to question, investigate, explore and discover. More information
  • Sign your kids up now!
    Our field-based science class for homeschool students in grades 1–5, Plants and Habitat Restoration, is open for registration. Classes are Fridays in May.
    Flier || More information
Learn more about our current projects
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