Stillwater Ecosystem Watershed & Riverine Sciences
Berkeley, CA
- UEI
- VXAHDMSNP7P7
- CAGE
- 1SX16
- Primary NAICS
- 541620 Environmental Consulting Services
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
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-
- Berkeley, CA LBLVC9LE7FK6
-
- SAM.gov registration date
- Physical address
- 2855 Telegraph Ave #400, Berkeley, CA 94705, USA
- Website
- stillwatersci.com
- Founded
- 1996
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Commercial & Professional Services
- Professional Services
- Consulting
- SIC code
- 89 Services, Not Elsewhere Classified
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | -$41,052 |
| FY2025 | $36,602 |
| FY2024 | $1,243,544 |
| FY2023 | $1,390,262 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Interior | $23,499 |
Contract vehicles
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Eastern Research Group Inc. | 68HERC20F0389 | $284,870 |
Grant subawards
| Prime recipient | Prime award | Amount | Awarded |
|---|---|---|---|
| National Fish And Wildlife Foundation | F19AC00311 | $39,999 |
Similar vendors
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|---|---|---|
| Flowwest, LLC | Oakland, CA | 541330 Engineering Services |
| Anchor Qea, Inc. | Seattle, WA | 541330 Engineering Services |
| San Francisco Estuary Institute | Richmond, CA | 541620 Environmental Consulting Services |
| Terraphase Engineering Inc. | Oakland, CA | 541620 Environmental Consulting Services |
| Four Peaks Environmental Science & Data Solutions LLC | Wenatchee, WA | 541620 Environmental Consulting Services |
About the company
Stillwater Ecosystem Watershed & Riverine Sciences, doing business as Stillwater Sciences, is a small disadvantaged, for-profit corporate entity based in Berkeley, California, specializing in environmental consulting and scientific research services. Registered in SAM.gov since 2002, the company provides professional environmental and ecological consulting services to federal agencies, with a focus on watershed management, ecological restoration, and environmental impact assessment. The organization is structured as a Subchapter S Corporation and has demonstrated expertise in complex environmental research and restoration projects, particularly in aquatic and riverine ecosystems.
The company has secured federal contract awards primarily from agencies like the Bureau of Reclamation and U.S. Fish and Wildlife Service, with a notable focus on environmental consulting services related to river systems and aquatic ecosystems. Their federal contract work includes professional services such as the Klamath River Flow Augmentation Releases (FAR) Compilation Report, a $312,045 firm-fixed-price purchase order from the Bureau of Reclamation to analyze physical, chemical, and biological factors influencing river conditions and salmon migration. Another contract with the U.S. Fish and Wildlife Service involved a $78,758.57 purchase order for a Phase 2 Phoslock Study, aimed at improving water quality in Upper Klamath Lake to support endangered sucker fish populations. These contracts were typically set aside for small businesses and demonstrated the company's specialized scientific and technical capabilities.
Stillwater Sciences has also been involved in federal grant sub-awards, primarily through the National Fish and Wildlife Foundation, focusing on environmental research and restoration projects in the Upper Klamath Basin. Their grant-related work has centered on conducting comprehensive literature reviews and designing pilot studies related to phosphorus sequestration and water quality improvement for endangered species. Specific grant sub-award projects have included designing a pilot study to prepare for potential Phoslock application in recently-restored wetlands around Upper Klamath Lake, with the ultimate goal of improving water quality for endangered sucker fish. These grants align with the Endangered Species Act recovery plan and demonstrate the organization's commitment to scientific research that supports ecological conservation and restoration efforts.
SBA capabilities narrative
Stillwater Sciences specializes in scientific approaches and technologies for environmental problem-solving in aquatic and terrestrial ecosystems. Projects include forest planning, hydroelectric operations, watershed assessment, environmental restoration.
Quick answers
Is Stillwater Ecosystem Watershed & Riverine Sciences registered in SAM.gov?
Yes. Stillwater Ecosystem Watershed & Riverine Sciences's SAM.gov registration is active through April 27, 2027.
Which contract vehicles does Stillwater Ecosystem Watershed & Riverine Sciences hold?
Stillwater Ecosystem Watershed & Riverine Sciences holds a place on 2 federal contract vehicles, including MAS and PSS.
How much has Stillwater Ecosystem Watershed & Riverine Sciences received in federal contracts?
Federal contracts obligated $36,602 to Stillwater Ecosystem Watershed & Riverine Sciences in fiscal year 2025 and $2,629,355 in fiscal years 2023 through 2027.
How does Stillwater Ecosystem Watershed & Riverine Sciences rank among federal contractors?
Stillwater Ecosystem Watershed & Riverine Sciences ranked #65 in PSC B510 in FY2025.
What is Stillwater Ecosystem Watershed & Riverine Sciences's most recent federal award?
Stillwater Ecosystem Watershed & Riverine Sciences's most recent federal contract award is Northern california area office (ncao) klamath river flow augmentation releases (far) compilation report - professional… (140R2025P0017), from Bureau of Reclamation, on April 14, 2025.
On GovTribe
See Stillwater Ecosystem Watershed & Riverine Sciences's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors