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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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