Services:
NHC conducts hydrologic, geomorphic, hydraulic, and sediment transport analyses to support preservation and restoration of rivers, creeks, lakes, wetlands, and estuaries. We also provide a full range of design services, from conceptual plans to final construction documents, for projects involving channel restoration, habitat features, and bio-engineered bank stabilization.
Our services include:
Hydrologic Modeling Detailed analysis of flow conditions to support habitat functions and biological life stages.
- Geomorphic Analysis
Examining the channel and wetland evolution and their effects on habitat values.
- Hydraulic Modeling
To address channel-floodplain interactions and natural processes.
- Sediment Transport Analysis
To assist with the design of stable channels in natural and modified settings.
- Environmental Permitting
Support for permitting processes.
- Project Design
Developing plans, specifications, and estimates for project implementation. |
Experience:
- Geomorphic Restoration
Technical analysis and design to restore natural stream channel conditions, recreate and restore floodplains, and maintain channel complexity in a variety of geomorphic and ecological settings.
- Ecological Mitigation
Planning, detailed design, and monitoring of projects to mitigate unavoidable impacts on stream and wetland environments, including projects targeting specific riparian and aquatic habitat communities and species.
- Ecohydraulics
Hydrologic, hydraulic, and sedimentation analyses specifically designed as indicators of ecological success, such as wetland hydro-period characteristics, tidal marsh evolution, floodplain inundation, and gravel transport for spawning, egg detachment and transport, and fish passage.
- Multi-objective Restoration
Many projects combining habitat restoration and flood management, recreation, channel stabilization, infrastructure development, and other objectives.
- Special Status Species
Analysis and habitat design services for salmonids, cyprinids, smelt, other special-status fish species, and threatened or endangered amphibians, reptiles, and birds. |
 Constructed riffle on tributary to the Mahatta River, Vancouver Island, BC
 Wilson Canyon restoration, NV
 Two-dimensional meadow inundation modeling, Lake Tahoe, CA
 Engineered log jam on Nooksack River, WA
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Benefits & Results:
- Promotes preservation and restoration of physical conditions and processes to achieve ecological objectives sustainably.
- Sound hydro-technical analysis supports effective ecological restoration for multi-objective projects.
- Clients and stakeholders receive solid information to effectively plan, permit, design, cost, and implement their projects.
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