Dayton Valley Area Drainage Master Plan

Problem

• Active alluvial fan landforms pose a unique flooding and sedimentation hazard
• The community of Dayton Valley is consistently impacted by alluvial fan flooding
• The Dayton Valley community presently does not have the drainage infrastructure to mitigate the flood and sedimentation risk

Approach

• Identify and map the active alluvial fan landforms within the community
• Develop a comprehensive 2-dimenstional hydrologic and hydraulic model to quantify flooding and sedimentation risk
• Conduct a flowpath uncertainty analysis to account for potential future changes in the fan landforms

Solution

• Communicate the existing flood risk to the residents of the community
• Identify and develop conceptual mitigation structures for both flooding and sedimentation