All Projects
Underwood Creek Flood Control & Habitat Restoration, Wisconsin
Milwaukee Metropolitan Sewerage District (MMSD) worked with Inter-Fluve and the US Army Corps of Engineers (USACE) to design and construct the $11.6 million Underwood Creek project that involved removing almost a mile of concrete-lined channel and several 2-4-foot drop structures. In its place, a natural-looking and functioning channel that mimics a high-gradient mountain stream was constructed.
River Island Channel & Floodplain Restoration, Oregon
Metro, a regional government body, contracted Inter-Fluve to restore an abandoned gravel mine on the Clackamas River. In 1996 a 100-year rain-on-snow flood event caused the mainstem Clackamas River to breach a levee and flow through this active gravel mining operation.
Coonamessett River Fish Passage & Habitat Improvements, Massachusetts
Coonamessett River Fish Passage & Habitat Improvements, Massachusetts The Coonamessett River is a small, spring-fed stream that flows into Vineyard Sound. The project site is situated at the downstream end of the river and experiences some tidal [...]
Simkins & Bloede Dam Removals, Patapsco River, Maryland
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Megunticook River Dams Feasibility Study, Maine
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Boardman River Dam Removals, Michigan
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Hemlock Dam Removal, Trout Creek, Washington
Hemlock Dam Removal, Trout Creek, Washington This historic photo shows Hemlock Dam just after construction was completed in 1935. Our team prepares to remove Hemlock Dam 76 years later. The 26-foot [...]
Newby Narrows, Twisp River, Washington
Newby Narrows, Twisp River, Washington The Newby Narrows project, pictured here in 2022 (5 years after construction) was originally identified as part of the Middle Twisp Reach Assessment in 2014, and it was ranked high [...]
Squallicum Creek, Bellingham, Washington
Squallicum Creek, Bellingham, Washington Urban runoff, forestry, agriculture, and construction of Intersate-5 have degraded conditions of Squallicum Creek enough to be listed as impaired for several water quality parameters. Inter-Fluve worked with the City, other [...]
Minnehaha Creek, Minnesota
Minnehaha Creek, Minnesota The Minnehaha Creek is a ditched, straightened, and incised system that is largely detached from its floodplain. Since 2003, Inter-Fluve has worked closely with the Minnehaha Creek Watershed District and partners to restore and [...]
Howland Fish Bypass Channel, Piscataquis River, Maine
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Coopers Mill Dam Removal, Sheepscot River, Maine
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Mill River Dam Removals, Massachusetts
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
North Mill Creek Dam Removal & Channel Restoration, Illinois
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Condit Dam Removal, White Salmon River, Washington
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Dry Creek Habitat Enhancement Feasibility & Alternatives Analysis, & Detailed Design, California
Dry Creek has been managed intensively for forestry, agriculture and gravel mining since the 1850s, resulting in 25 feet of channel incision. Since the mid-1980s, Dry Creek has also been highly regulated for flood control and water supply.
Middle Fork John Day Oxbow, Oregon
The Oxbow project on the Middle Fork John Day River was designed to enhance salmon habitat on a reach of the river whose floodplain was subjected to hydraulic dredge mining for gold in the 1930s and 1940s.
Chewuch River Right side channel, WA
Chewuch River Right side channel, Washington Working with the Yakama Nation, we designed and constructed created a new 3,600-foot side channel to provide a diversity of aquatic and riparian habitat. Inter-Fluve wetland specialists collaborated closely with agency [...]
Middle & Upper Columbia River, Washington
Since 2001, we have performed 11 detailed reach assessments and developed restoration strategies on over 100 miles of stream within key watersheds of the Methow, Entiat, Wenatchee, Yakima, and Klickitat rivers. This up-front planning work has led to over 50 actual in-the-ground restoration projects for the Yakama Nation.
Milo McIver Fish Enhancement Project, Clackamas River, Oregon
Yakama Nation Fisheries Upper Columbia Habitat Restoration Project contracted Inter-Fluve to perform a reach assessment, and design of a 2,200-foot-long groundwater-fed side channel to provide year-round rearing habitat for summer chinook and steelhead.
Fender Mill Alcove, Methow River, Washington
Yakama Nation Fisheries Upper Columbia Habitat Restoration Project contracted Inter-Fluve to perform a reach assessment, and design of a 2,200-foot-long groundwater-fed side channel to provide year-round rearing habitat for summer chinook and steelhead.
Clackamas River Basin, Oregon
In 1877, Livingston Stone, employed by the U.S. Fish Commission to explore potential hatchery sites throughout the Columbia River Basin, professed that “probably no tributary of the Columbia has abounded so profusely with salmon in past years as this river (the Clackamas).”
Sand Creek Assessment, Project ID and Restoration
While walking 125 miles of the Sand Creek and Credit River (MN) during a watershed-level assessment, we identified over 200 restoration projects and ranked them on a 1-11 scale. Picha Creek ranked at the top for restoration potential.
Indian Creek Culvert Replacement & Fish Passage, Washington
Inter-Fluve supported the Lower Columbia Estuary Partnership in identifying restoration opportunities, designing and constructing this large-scale floodplain reconnection project.
La Center Wetlands, East Fork Lewis River, Washington
Inter-Fluve supported the Lower Columbia Estuary Partnership in identifying restoration opportunities, designing and constructing this large-scale floodplain reconnection project.
Horsetail Creek Floodplain Restoration, Oregon
Located on the Columbia River floodplain, the 180-acre Horsetail Creek project area was dramatically impacted by construction of Interstate 1-84 and resulting diversions of the creek, as well as a pea gravel mine.
San Clemente Dam Removal, Carmel River, California
From California to Maine, dams across the United States are being removed to help fish, improve safety and boost recreation. We’ve worked on over 100 dam removals and performed construction oversight on over 35.
Haines Highway Aquatic Habitat Creation & Enhancement, Chilkat River, Alaska
Haines Highway Aquatic Habitat Creation & Enhancement, Chilkat River, Alaska As part of a larger project to upgrade the Haines Highway–which runs along the dynamic, glacially-fed Chilkat River in Alaska–we completed several projects over a ten-year period [...]