Redfish's Approach

Engineering solutions that work with natural river processes to improve stability, habitat, and flood resilience. 

· Geomorphic and river stability assessments

· Process-based stream restoration

· Form-based stream restoration (natural channel design)

· Floodplain reconnection and floodplain bench design

· Streambank stabilization and bioengineering

· Nature-based designs including nature-like fishways

· Engineered log jams and large wood design

· Sediment sampling and management plans

· Sediment transport analysis and modeling

· Riverine habitat assessments

Technical analysis and engineering support to help dam owners manage compliance, ensure safety, and make informed decisions about dam risk.   

· Dam safety inspections 

· Dam Engineering Assessments 

· Spillway capacity analyses including Probable Maximum Flood (PMF)

· Dam breach and incremental breach analyses

· Dam hazard classification

· Inspection, operation, and maintenance plans

· Emergency action plans (EAPs)

· Dam rehabilitation and repair

· Fish passage solutions (technical and nature-like)

· Dam breach and removal

· Construction phasing and control of water plans

Clear, defensible analyses to support floodplain compliance and manage community flood risk

· Floodplain development permits 

· No-rise certifications and floodway encroachment analyses

· Letters of Map Amendment (CLOMA/LOMA) 

· Letters of Map Revision (CLOMR/LOMR)

· Base Flood Elevation (BFE) determination

· FEMA floodplain mapping

· Ice jam analyses and mitigation

· Municipal ordinance technical support

· Flood studies and flood mitigation planning

· Flood risk reduction projects (floodplain benches, managed retreat, etc.)

· Benefit-cost analyses for mitigation funding

Engineering resilient, reliable infrastructure in dynamic river, floodplain, and coastal environments.

· New and replacement culverts

· Bridge and culvert sizing (tidal and riverine)

· Scour potential analysis and countermeasure design

· Stream Smart and CoastWise crossing upgrades

· Aquatic and terrestrial organism passage

· Infrastructure adaptation to reduce flood damage

· Nature-like fishways (rock ramps, step-pool)

· Technical fishway (fish ladders, etc.)

· Temporary water management and control of water plans

Bioengineering and hydrodynamic modeling for dynamic shorelines and evolving water levels.

· Water level studies and monitoring

· Tidal datum development

· Living shorelines and bioengineered stabilization

· Wave run-up and overtopping analyses

· Storm surge modeling

· Sea-level rise analysis and adaptation planning

· Tidal marsh restoration and reconnection

Integrated planning and design to manage runoff, improve water quality, and protect downstream systems. 

· Erosion and sediment control plans

· Drainage and stormwater management, planning, and design

· Stormwater Pollution Prevention Plans (SWPPP) 

· Green infrastructure (rain gardens, bioretention ponds, etc.)

· Low-impact development (LID)

· Watershed assessment and planning

· Municipal ordinance development and enforcement support

Whether initiating a new project or responding to a regulatory requirement, Redfish supports clients through every phase of the project lifecycle from assessment and design to construction and long-term monitoring:

· Project and program planning and management 

· Grant applications and funding procurement assistance

· Community engagement and stakeholder coordination

· Field investigations and data collection

· Topographic and bathymetric survey

· Geomorphic assessments and sediment transport modeling

· Hydrologic analysis (statistics, HydroCAD, HEC-HMS, etc.)

· Hydraulic modeling (1D and 2D; HEC-RAS, SRH-2D, SWMM, etc.)

· Alternatives analysis and feasibility studies

· Regulatory coordination and permitting support

· Design drawings and technical specifications

· Bidding and contractor support

· Construction administration and inspection

· Post-construction monitoring and adaptive management