2025-10-20T09:21:26-07:00 2024-12-31 472319412 Jensen Smith Certified Public Accountants Inc 661 5th St Ste 101 Lincoln CA 95648 990 2024-01-01 680429132 Sierra Streams Institute SIER 5304777132 117 New Mohawk Rd Ste H Nevada City CA 95959 Jeff Lauder Executive Dir. 2025-10-20 true true Jennifer M Jensen CPA P00544955 9164341662 2024 2025-03-06 01:10:19Z Lang Waters 117 New Mohawk Rd Ste H Nevada City CA 95959 2096122 false X sierrastreamsinsitute.org X 1999 CA To promote community stewardship and advance scientific knowledge of watersheds through reserarch, monitoring and education for the benefit of the Sierra Nevada region and beyond. 10 10 21 0 1434423 1977995 96109 114579 564 333 18805 3215 1549901 2096122 0 0 916874 928940 0 21193 632229 893608 1549103 1822548 798 273574 527018 889051 135599 228834 391419 660217 To promote community stewardship and advance scientific knowledge of watersheds through reserarch, monitoring and education for the benefit of the Sierra Nevada region and beyond. false false 889867 Restoration: Watersheds throughout the Sierra Nevada have suffered impacts to their health, water quality and ecological function as a result of gold mining, residential development, road building, agriculture, diversions, and other activities. Our restoration programs are aimed at correcting these problems, with efforts that include the following: abandoned mine remediation, salmon habitat restoration, invasive non-native species removal, restoration of native vegetation, geomorphological restoration, and integration of traditional native practices. Our work is focused in the Sierra Nevada, with the goal of increasing stakeholder participation in the restoration process. We have undertaken extensive restoration efforts in our home watershed of Deer Creek in the past, and now work with partners in the Bear River watershed on projects ranging from post-dam removal salmon passage and habitat restoration through endangered or protected plant species protection at current conservation easements throughout the Sierra. In general, our approaches involve what is known as "process based restoration", focusing on restoring the processes that let nature manage itself as opposed to trying to "restore" arbitrary conditions such as certain plants or aesthetics. 273364 Science Education: The Sierra Streams Education Program offers a variety of science instruction options for the youth of Nevada County and beyond. Rooted in the Yuba and Bear watersheds of Nevada County, our program offers an unparalleled educational experience where students of all ages learn core watershed science principles while exploring the rugged beauty of our landscape and waterways. Education programs include the National Science Foundation-sponsored Our Forests forest health curriculum project, databases and support for students to get outside to sites with place-based curriculum, and community education for all ages through our California Naturalists programming. All classes engage students through hands-on and place-based learning while promoting critical thinking and creative problem solving. Common Core Standards and Next Generation Science Standards are woven into all of our subject matter as it is developed.Our Science Education Program has three underlying goals:1- Provide students with a basic understanding of scientific principles through hands-on instruction in our watershed.2- Promote STEM (science, technology, engineering and math) careers for rural youth.3- Create a new generation of environmental stewards. 110306 Monitoring and Research:Sierra Streams Institute works with community members to monitor the health of multiple watersheds throughout the Northern Sierra Nevada mountains. These watersheds include Deer Creek, our home watershed, as well as the Bear River, Truckee River, American River, and portions of the Yuba River. Collecting these data regularly over time allows us to see changes, evaluate restoration efforts, and locate sources of potential problems. Our quarterly baseline monitoring collects data on water temperature, dissolved oxygen, conductivity, pH, and turbidity; these vital signs tell us how the creek is doing and what kinds of life can inhabit its waters. We also check nutrient and bacteria levels, which are important for algae growth and safe swimming. Finally, we use benthic macroinvertebrates (BMI), stream-dwelling insect larvae, as bioindicators of stream health throughout all of the watersheds we monitor, connecting BMI communities to water quality and climate change impacts. Sierra Streams Institute's research programs include studies on fire ecology, climate change impacts, and water quality and biological responses in streams. Our laboratory services include nutrient analysis, bacteria analysis and benthic macroinvertebrate sampling and identification. We are the only non-profit water quality laboratory in the region with the capacity to do the suite of analyses we provide, serving as a community partner and resource. Our research activities have also included prior studies on mine waste impacts on human health, educational outcomes of non-traditional science training, and forest health. 1273537 true true false false false false false false false false true false false false true false true false false false false false false false false false false false false false false false false false false false false false false false false false false false false false false true 30 0 true 21 true false false false false false false false 0 false false false false false false false X 10 10 false false false false false false false true false false false true true true true false false false false false CA X X Carrie Ammerman 5304777132 117 New Mohawk Road Nevada City CA 95959 Jeff Lauder Executive Dir. 40.00 0.00 X X 92392 0 0 Marsha Burch Director 1.00 0.00 X 0 0 0 Lang Waters President 2.00 0.00 X X 0 0 0 Louise Johnson Secretary 2.00 0.00 X X 0 0 0 Leslie Estes Director 2.00 0.00 X 0 0 0 Inge Ivens Treasurer 2.00 0.00 X X 0 0 0 Poyom Riles Director 2.00 0.00 X 0 0 0 Lynn Barakos Director 2.00 0.00 X 0 0 0 Alex Palm Director 1.00 0.00 X 0 0 0 Dave Herbst Director 6.00 0.00 X 0 0 0 Peter Hollingshead Director 2.00 0.00 X 0 0 0 92392 0 false false false 0 1439026 538969 1977995 Fee for Service 114484 114484 Sales 95 95 114579 333 333 0 0 0 0 0 0 0 Other Income, refunds, rewards 3215 3215 3215 2096122 114579 3548 X 0 0 0 0 92392 31066 60492 834 0 751726 473798 270927 7001 0 14552 14552 70270 41402 28171 697 0 0 0 0 0 0 607321 581738 25583 0 0 0 0 43856 40470 3386 32127 21847 7866 2414 0 0 0 0 19592 19592 22513 22216 297 Supplies 65119 58800 6248 71 Miscellaneous 51365 48918 2267 180 Computer Expenses 17313 12448 4865 Project/Program Lab Supplies 14205 14205 20197 1763 16986 1448 1822548 1273537 527818 21193 62758 37678 99599 555107 0 244333 200030 0 0 0 0 0 97957 49259 68290 48698 50043 45544 0 0 0 1995 1994 527018 889051 102117 56039 2933 147541 30549 25254 135599 228834 X 391419 660217 391419 660217 527018 889051 273574 -4776 X false true X false true true X 228563 980491 1139982 1393547 1977995 5720578 63846 96109 114579 274534 0 0 0 228563 980491 1203828 1489656 2092574 5995112 0 0 5995112 146 1659 66 564 333 2768 0 146 1659 66 564 333 2768 0 103290 2054 18805 3215 127364 228709 1085440 1205948 1509025 2096122 6125244 0.97880 0.97000 0.00050 0.00060 X RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED 5313 2999 2314 92644 46260 46384 48698 Payroll Liabilities 25254 25254 2120206 -4776 28860 24084 2096122 2096122 1851408 28860 28860 1822548 1822548 Form 990, Part VI, Section B, Line 11b No review was or will be conducted. Form 990, Part VI, Section C, Line 19 No documents available to the public.