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STILLWATER ECOSYSTEM WATERSHED & RIVERINE SCIENCES

UEI: VXAHDMSNP7P7CAGE: 1SX16

STILLWATER ECOSYSTEM WATERSHED & RIVERINE SCIENCES is a federal contractor, registered under UEI VXAHDMSNP7P7 and CAGE code 1SX16. It has been awarded $10,063,333 in federal contracts. Primary work spans Environmental Consulting Services, Offices of Lawyers, and Unknown NAICS. Top awarding agencies include Department Of Commerce, Department Of Defense, and Department Of The Interior.

Contact Information

Registration and classification details

Registration

UEI Code

VXAHDMSNP7P7

CAGE Code

1SX16

Entity Structure

Corporate Entity (Not Tax Exempt)

Established

N/A

Business Classifications

For Profit OrganizationSubchapter S Corporation

NAICS Codes

541330Engineering Services
541620Environmental Consulting Services(Primary)
541690Other Scientific and Technical Consulting Services

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

Stillwater Ecosystem Watershed & Riverine Sciences specializes in advanced environmental consulting services focused on watershed dynamics, riverine systems, and ecological flow management. Their technical expertise includes hydrologic modeling, river flow augmentation analysis, estuarine ecosystem ...

Stillwater Ecosystem Watershed & Riverine Sciences specializes in advanced environmental consulting services focused on watershed dynamics, riverine systems, and ecological flow management. Their technical expertise includes hydrologic modeling, river flow augmentation analysis, estuarine ecosystem assessment, and the synthesis of scientific data into actionable policy and management reports. The firm delivers high-precision, field-informed analyses for complex aquatic systems, with demonstrated proficiency in compiling technical documentation for regulatory compliance and resource allocation decisions. Key differentiators include deep specialization in Northern California riverine environments, integration of non-technical scientific communication for multi-stakeholder audiences, and experience navigating federal environmental decision-making frameworks. The contractor maintains a consistent relationship with the Department of Commerce, primarily supporting technical and non-technical scientific services related to estuarine and coastal ecosystems, and has delivered specialized consulting for the Department of the Interior, notably on Klamath River flow augmentation reporting. They also provide environmental advisory services under the General Services Administration’s Federal Supply Schedule, indicating established credibility in federal procurement channels. Their work consistently bridges scientific research with operational requirements for natural resource management agencies. Their primary NAICS classification, 541620, reflects a focused practice in environmental consulting, specifically in hydroecological assessment, aquatic habitat analysis, and watershed-scale science applications. They are positioned as a niche provider for federal agencies requiring rigorous, place-based ecological expertise rather than broad-spectrum environmental services. Their market positioning centers on scientifically rigorous, regionally grounded solutions for river and estuary management. Stillwater Ecosystem Watershed & Riverine Sciences is a small business entity headquartered in Berkeley, California, with no federal certifications on record. Their geographic presence is anchored in the West Coast, with a strategic focus on federal environmental programs in California’s critical watershed regions. They operate as a specialized technical services provider serving federal clients with deep domain knowledge in riverine and estuarine science.

Key performance metrics

Award counts and award dollars by type, as prime and as subcontractor.

Awards Count

54

All time

Active

0

Currently performing

Completed

54

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award analytics

Awards by agency, industry, year, award type, size, and place of performance.

Awards by Agency
Awards by NAICS
Awards by Agency Over Time
Awards by Place of Performance

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Open opportunities in STILLWATER ECOSYSTEM WATERSHED & RIVERINE SCIENCES's top NAICS codes and agencies

NAICS: 541620
New
SLED
On-Call Solid Waste Data Analysis and Economic Services
Solicitation # 26-202-S
Seattle Public Utilities is seeking an on-call consultant to provide expert research, economic analysis, modeling, and reporting services to support the city's Zero Waste goals. This five-year contract, with an estimated value of 625,000 dollars, focuses on leveraging extensive solid waste datasets to evaluate the effectiveness, equity, and feasibility of programs and financial incentives. The selected consultant will be responsible for conducting waste characterization, developing predictive economic models for tonnages and trip frequencies, and performing cost-benefit and risk analyses. Key deliverables include production-ready reproducible code for GitHub, plain-language reports, data visualizations, and industry publications. The procurement process requires a comprehensive proposal by November 13, 2026, evaluated on staff qualifications, technical approach, modeling proficiency, and a mandatory WMBE Inclusion Plan for contracts exceeding 343,000 dollars. Awardees must comply with strict City of Seattle standards, including ADA and WCAG digital accessibility, ethics codes, and specific insurance requirements such as Commercial General Liability. Work will be executed through individual Work Assignments issued on an on-call basis, with payments processed within 30 days of invoice receipt. Consultants must also certify no organizational conflicts of interest and adhere to federal and city debarment regulations.
Seattle Public Utilities

POSTED

about 11 hours ago

DEADLINE

in 6 days
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NAICS: 541620
New
SLED
BIG WAVE NEW BRIDGE
Solicitation # 2027-RFP - Big Wave Bridge-00211
The County of San Mateo, through the Planning and Building department, is soliciting proposals for a qualified consultant to secure resource agency and encroachment permits for the construction of the Big Wave New Bridge. Located at 386 Airport Street in Half Moon Bay, the bridge will span a wetland drainage area between a Big Wave parcel to the north and a County-owned parcel to the south to ensure pedestrian path continuity toward the Princeton area. This project is conducted under the conditions of approval for Planning Permit PLN2013-00451. It is important to note that the actual construction of the bridge and the application for the building permit are explicitly excluded from the consultant's scope of work. The contract has a term of one year, with an anticipated award date of November 24, 2026. Proposals must be submitted via the eProcurement portal by November 16, 2026, and must be divided into a technical proposal and a separate fee proposal. Award selection is based on a points-based scoring method where firm qualifications, project approach, proposed schedule, and price are each weighted at 25 percent. The County provides a procurement preference for local businesses and non-profits. All communications regarding the RFP must be handled through the authorized contact persons, Camille Leung and Amy Tang, or the eProcurement portal.
Planning and Building

POSTED

about 12 hours ago

DEADLINE

in 10 days
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NAICS: 541330
New
SLED
2027-2030 On-Call Engineering and Professional Services
Solicitation # 49733
The City of San Rafael is soliciting Statements of Qualifications from consultants and contractors to establish a pool of qualified firms for on-call engineering and professional services. The scope covers a wide array of disciplines, including civil, structural, electrical, environmental, architectural, and transportation services, among others. The city intends to select up to five firms per discipline for a three-year contract term beginning July 1, 2027, and ending June 30, 2030, with an option for a one-year extension. Eligible firms must maintain a principal office in the San Francisco Bay Area. Work will be assigned through individual Task Orders, with compensation based on either fixed fees or hourly rates. The selection process utilizes a 100-point ranking system to shortlist firms for interviews. Applicants must submit their qualifications via Bid Express by December 8, 2026, at 2:00 PM. Submissions must include a cover letter explicitly accepting the City's Service Level Agreement as-is, professional resumes, work references, and a history of litigation or contract terminations from the last five years. Contractors are required to maintain comprehensive insurance, including commercial general liability of at least one million dollars per occurrence and workers compensation as required by California law. Payments are processed monthly within 30 days of receipt, though all authorized work is contingent upon appropriated funding. Additionally, contractors must adhere to state prevailing wage laws for any contract exceeding one thousand dollars.
City of San Rafael

POSTED

about 13 hours ago

DEADLINE

in about 1 month
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