Inter-Fluve, Inc.
Inter-Fluve is an employee-owned environmental engineering consultancy specializing in river, lake, wetland, and estuary restoration, serving federal, state, and local government agencies, tribal nations, non-profits, and private clients across the U.S. and Canada.
- Company typePrivate
- Founded1984
- HeadquartersHood River, United States
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Inter-Fluve, Inc. does
Inter-Fluve, Inc. is an employee-owned environmental engineering consulting firm founded in 1984 by four fly-fishing scientists who combined expertise in geomorphology, fish biology, and hydrology to restore abused trout streams. Headquartered in Hood River, Oregon, with offices in Cambridge, Massachusetts and Damariscotta, Maine, plus an affiliated entity (Inter-Fluve Engineering, PLLC) serving Michigan, New York, and North Carolina, the firm has completed over 2,600 projects including 150+ dam removals across the United States and Canada. Core technical capabilities span geomorphic and watershed investigations, river and stream channel design, dam removal and fish passage engineering, estuary restoration, urban stream daylighting, bank stabilization and bioengineering, sediment management, and construction oversight. The firm also contributes to industry standards (e.g., Washington's Stream Habitat Restoration Guidelines) and operates the Headwaters Program, allocating 7% of annual profit to aquatic restoration education and internships.
The firm generates revenue through professional services engagements sold primarily via direct sales and government RFPs on multi-year, project-based contracts. Client base is diversified across federal agencies (Bureau of Reclamation, NOAA, USACE, USFWS), regional and municipal watershed and sewerage districts (Metro Portland, MMSD, Minnehaha Creek Watershed District), tribal nations (Yakama Nation since 2001), non-profits (American Rivers, Atlantic Salmon Federation), utilities (Portland General Electric, Sonoma Water), and private landowners, with contract values ranging from individual restoration designs to a role on the $1 billion Don River revitalization in Toronto alongside Michael Van Valkenburgh Associates. Proprietary technical methodologies, particularly groundwater-fed side channel design for salmonid thermal refuge and dam removal sediment management, function as the firm's key differentiators. Pricing is quote-based and not publicly disclosed.
Notable recent awards include the 2025 ACEC Massachusetts Grand Conceptor Award (Cold Brook), 2025 Quebec Association of Engineering Consulting Firms Grand Prix in Environmental Category (St. Croix River Milltown Dam Removal), and 2024 ACEC Oregon Grand Award (Middle Fork John Day), signaling continued recognition across geographies. Marketing is largely earned-media driven through industry awards, conference participation, and a modest Instagram and website presence rather than paid digital channels.
Inter-Fluve, Inc. firmographics
Firmographics- Name
- Inter-Fluve, Inc.
- Legal name
- Inter-Fluve, Inc.
- Website
- https://interfluve.com
- Company type
- Private
- Founded year
- 1984
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Inter-Fluve is an employee-owned environmental engineering consultancy specializing in river, lake, wetland, and estuary restoration, serving federal, state, and local government agencies, tribal nations, non-profits, and private clients across the U.S. and Canada.
- Ownership category
- akta.pro rank
Inter-Fluve, Inc. industry classification
Industry- Product category
- Environmental Engineering & Water Resources Consulting
- NAICS
- Environmental Consulting Services (54162), Architectural, Engineering, and Related Services (5413)
- SIC
- Services-Commercial Physical & Biological Research (8731)
- akta.pro primary industry
- Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)
- akta.pro secondary industry
- Site Assessment & Remediation (Phase I/II, Cleanup Oversight) (BPAHAJAC)
Keywords
Where Inter-Fluve, Inc. is headquartered
LocationHeadquarters
- HQ city
- Hood River
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Inter-Fluve, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Engineering Consulting Services: Professional consulting services for river, lake, wetland, and estuary restoration including investigations, design, construction oversight, permitting, and monitoring. Revenue generated through billable hours on project-based contracts with government agencies, tribes, businesses, and non-profits.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based consulting services |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels4 records
Inter-Fluve, Inc. product offering
Product offeringCore offering
Inter-Fluve provides professional engineering and consulting services for the investigation, design, and restoration of rivers, lakes, wetlands, and estuaries. Service offerings span geomorphic and watershed investigations, river and stream channel design, dam removal and fish passage engineering, estuary restoration, urban stream daylighting, bank stabilization and bioengineering, and construction oversight, permitting, and monitoring. The firm delivers these services under project-based contracts to federal, state, and local government agencies, tribal governments, non-profits, and select private businesses.
Product overview
Inter-Fluve, Inc. is an employee-owned engineering and consulting firm that offers a comprehensive suite of river restoration and water resources services. The firm provides integrated scientific and engineering solutions organized around investigations, design, and construction/monitoring phases. Core service offerings include dam removal and fish passage, estuary restoration, urban stream restoration, geomorphic investigations, river channel design, bank stabilization, and technical advisory services. The firm also contributes to industry standards through technical design guideline development and operates the Headwaters Program for community giving, education outreach, and student internships. Inter-Fluve has completed over 2,600 projects across the United States and internationally, working with governments, businesses, tribes, and non-profits.
Differentiator
Problem solved
Functional benefit
Products and services
- Dam Removal & Fish Passage Services
Quantifiable outcome
- Over 2,600 projects completed since 1984
- +6 more outcomes
Companies that use Inter-Fluve, Inc.
Customer profileNamed customers14 records
Segments4 records
Ideal customer profiles4 records
Inter-Fluve, Inc. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Inter-Fluve, Inc. partnerships and signals
Strategic signalPartnerships
18 partnerships are on record, tiered core and flagship.
- Atlantic Salmon FederationcorePartner since 2015 for Sheepscot River restoration including Coopers Mills dam removal (2018), Head Tide dam partial removal with fish passage (2019), and technical fish passage at Branch Pond.
- Boardman River Implementation TeamcoreCollaboration of State, Federal agencies, Indian Tribes, local governments, non-profits and energy provider for largest river restoration in Michigan history - removing Sabin, Boardman and Brown Bridge dams reconnecting 160 miles of free-flowing coldwater stream.
- Sonoma Water (Sonoma County Water Agency)corePartnership since 2008 for Dry Creek Habitat Enhancement Project to improve conditions for endangered Coho Salmon and threatened steelhead trout. To date three miles of Dry Creek restored with another three miles in design under Army Corps General Investigation Study.
- Minnehaha Creek Watershed DistrictcoreLong-term partnership since 2003 for creek restoration, bank stabilization, habitat enhancement, and regional trail master planning. Includes multiple geomorphic assessments and completed projects.
- Yakama NationcoreLong-term partnership since 2001 for habitat restoration in Columbia River watershed (Methow, Entiat, Wenatchee, Yakima, and Klickitat rivers). Projects include dam removals, culvert replacements, side channel creation, levee removal, large wood structures, and salmonid habitat enhancement across 147+ miles of stream.
- Portland General Electric (PGE)corePartnership for fish enhancement projects on the Clackamas River including the Milo McIver Fish Enhancement Project, designing groundwater-fed channels for salmonid habitat and cold-water rearing refuge.
- Metro (Portland Regional Government)coreContracted by Metro to restore abandoned gravel mine on the Clackamas River. Project included rebuilding riparian-forested wetlands and reconnecting Goose Creek tributary to mainstem, completed in two phases totaling over $4 million.
- Michael Van Valkenburgh Associates (MVVA)flagshipPrime contractor for the $1 billion Don River revitalization project in Toronto, Canada. Inter-Fluve leads channel and wetland designs, plant species assemblages, and habitat features. Project described by Bloomberg as one of the most ambitious urban resilience projects in the world.
- Waterfront TorontoflagshipContracted by Waterfront Toronto and MVVA for the $1 billion Don River revitalization project - a 308-acre Lower Don Lands restoration transforming industrial areas into natural river corridors and mixed-use neighborhoods.
- Milwaukee Metropolitan Sewerage District (MMSD)corePartnership for Underwood Creek Flood Control & Habitat Restoration ($11.6M project) in collaboration with US Army Corps of Engineers. Replaced concrete flood channel with natural stream restoration mimicking high-gradient mountain stream.
- Bureau of ReclamationcoreMaintains federal contract for water resources engineering services. Projects include Middle Fork John Day River restoration with US Bureau of Reclamation design team.
- NOAA FisheriescoreFederal partner for fish habitat restoration projects including Patapsco River dam removals and salmon recovery programs.
- U.S. Army Corps of EngineerscoreFederal contracting partner for flood management and restoration projects including Underwood Creek collaboration and Boardman River dam removals in Michigan.
- U.S. Fish and Wildlife ServicecoreFederal partner for aquatic habitat restoration and endangered species habitat projects.
- American RiverscorePartner for dam removal projects including Bloede Dam and Simkins Dam on Patapsco River. Inter-Fluve served as prime consultant for design and construction phase services for these $17.9M projects.
- Lower Columbia Estuary PartnershipcorePartnership for identifying restoration opportunities and designing La Center Wetlands floodplain reconnection project reconnecting 453 acres to East Fork Lewis River for salmonid habitat.
- Maryland Department of Natural ResourcescoreDam owner for Patapsco River dam removals. Bloede Dam Removal project opened 65+ miles of spawning habitat supporting local recreational fishery.
- Town of FalmouthcoreRetained by Town of Falmouth for Coonamessett River Fish Passage & Habitat Improvements including dam removals, culvert replacement, and cranberry bog restoration totaling approximately 30 acres.
Scale indicators6 records
Recent moves6 records
Expansion highlights6 records
Inter-Fluve, Inc. competitors and assessment
Company assessmentDirect peers
- Biohabitats: Ecological restoration firm specializing in river, wetland, and coastal restoration with a similar interdisciplinary science-and-engineering model and comparable project scale. Direct competitor for many of the same government RFPs that Inter-Fluve pursues.
- Stillwater Sciences: Specialist river and watershed restoration science and engineering firm working with federal and state agencies on dam removal, fish passage, and habitat restoration projects. Closely comparable in mission, technical focus, and project types to Inter-Fluve.
- Kleinschmidt Group: Specialized water resources and environmental engineering consulting firm with strong expertise in FERC relicensing, fish passage, and hydro-related ecological work. Comparable niche focus and federal agency client base.
- Natural Systems Design: Mid-sized river and stream restoration engineering firm with similar technical offerings in dam removal, fish passage, and habitat design. Direct head-to-head competitor on Pacific Northwest restoration RFPs.
- Anchor QEA: Environmental and water resources engineering consulting firm providing shoreline, sediment, and aquatic restoration services to federal, tribal, and municipal clients. Similar mix of dam removal, sediment management, and habitat restoration work.
- River Design Group: Specialized river restoration engineering consultancy focused on hydraulic modeling, geomorphic design, and stream restoration. Closely comparable in technical service mix and target market.
- Michael Van Valkenburgh Associates (MVVA): Landscape architecture firm collaborating closely with Inter-Fluve as prime partner on the $1 billion Don River revitalization project. Comparable in delivering integrated design for major urban river and waterfront projects, though MVVA leads the landscape/urban design side.
Broad incumbents
- Tetra Tech: Global engineering and environmental consulting firm with a large water resources and ecological restoration practice. Competes with Inter-Fluve on larger federal contracts and offers overlapping services but as part of a much broader portfolio.
- Stantec: Major international engineering consultancy with a sizable environmental services and water practice. Competes for similar federal and municipal restoration RFPs but operates at significantly larger scale and broader scope.
- AECOM: Global infrastructure consulting firm with a substantial environment and water business. Pursues many of the same large-scale federal restoration and resilience contracts that Inter-Fluve supports as a subconsultant or specialty partner.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights7 records
Customer concentration
Inter-Fluve, Inc. social profiles
Digital presenceInter-Fluve, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Inter-Fluve, Inc. leadership team
Management profileNumber of profiles
Profiles2 records
Inter-Fluve, Inc. subsidiaries and ownership
Company hierarchySubsidiaries1 record
Inter-Fluve, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Inter-Fluve, Inc. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Inter-Fluve, Inc.
What does Inter-Fluve, Inc. do?
Inter-Fluve provides professional engineering and consulting services for the investigation, design, and restoration of rivers, lakes, wetlands, and estuaries. Service offerings span geomorphic and watershed investigations, river and stream channel design, dam removal and fish passage engineering, estuary restoration, urban stream daylighting, bank stabilization and bioengineering, and construction oversight, permitting, and monitoring. The firm delivers these services under project-based contracts to federal, state, and local government agencies, tribal governments, non-profits, and select private businesses.
Is Inter-Fluve, Inc. a public or private company?
Inter-Fluve, Inc. is a private company. It is classified as management employee owned and is currently operating.
When was Inter-Fluve, Inc. founded?
Inter-Fluve, Inc. was founded in 1984. It employs 51 to 100 people.
Where is Inter-Fluve, Inc. based?
Inter-Fluve, Inc. is headquartered in Hood River, United States, in the North America region.
How does Inter-Fluve, Inc. make money?
One revenue line is on record: engineering Consulting Services.
Who are Inter-Fluve, Inc.'s main competitors?
Direct peers on record are Biohabitats, Stillwater Sciences, Kleinschmidt Group, Natural Systems Design, Anchor QEA, River Design Group and Michael Van Valkenburgh Associates (MVVA). Broad incumbents are Tetra Tech, Stantec and AECOM.
Does Inter-Fluve, Inc. have an API?
No public API is recorded for Inter-Fluve, Inc..
What industry is Inter-Fluve, Inc. in?
Inter-Fluve, Inc.'s product category is Environmental Engineering & Water Resources Consulting. Its primary akta.pro industry code is BPAHAIAD, Water, Wastewater & Hydraulics Engineering Consulting, with a secondary code of BPAHAJAC, Site Assessment & Remediation (Phase I/II, Cleanup Oversight). Its NAICS code is 54162 and its SIC code is 8731.