Water Resources

Ridolfi’s scientists and engineers specialize in water resources for people and wildlife. From rebuilding fragile wetlands to protecting water bodies from contaminated stormwater, we develop functional solutions that promote healthy ecosystems and sustainable systems. We are experienced at evaluating habitat conditions and the condition of aquatic organisms.

With an ecological foundation aligned with our design and regulatory expertise, we assist with stormwater and floodplain management, climate adaptation planning, low-impact development, watershed assessment and planning, feasibility studies, green infrastructure and restoration of disturbed ecosystems. Our team‘s technical skills encompass geographic information systems, fisheries and terrestrial biology, geomorphology, hydrology, hydraulics, hydrogeology, environmental science, risk assessment, database management and civil engineering.


Billy’s Pond Off-Channel Habitat Restoration

City of Yakima, WA

Wastewater Treatment Plant Outfall Relocation and Floodplain Restoration

City of Yakima, WA

Fidalgo Bay Salt Marsh Restoration

Samish Indian Nation
Anacortes, WA

Sha Dadx Site Off-Channel Habitat Restoration

NOAA, Fife, WA