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Napa River Restoration - Napa County Flood Control


Key Features 


  • Restoring 14 miles of the Napa River into a more natural, sustainable condition

  • Geotechnical investigations required for approximately 30 restoration areas (46 borings drilled in total)


Geotechnical Challenges 


  • Identification, characterization, and geologic mapping of hard pan deposits which dominate the bed and lower banks of the river channel inhibiting vegetation growth and fish habitat enhancement


Innovative Solutions


  • Restoration plans include: active channel widening; secondary channel creation, floodplain excavation and grading; berm set back and reconstruction; and managed bank retreat

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