Analysis of Progressive Development on Alluvial Fans

by Robert K. Simons, Simons & Associates Inc, United States,
Daryl B. Simons, Simons & Associates Inc, United States,
Kenneth Edwards, Simons & Associates Inc, United States,
Albert Molinas, Simons & Associates Inc, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Flow on alluvial fans is considered to be somewhat unpredictable and complex, experiencing high velocities, avulsions, erosion, and deposition causing a dynamic topography with flooding problems. Such complexities have led to very simplistic hydraulic analyses procedures, which often fail to adequately predict fan inundation and may lead to very restrictive flood plain ordinances. This paper presents an analytic approach that uses a more sophisticated, physical process-based method to analyze the complex nature of flow on alluvial fans. This approach considers principles of hydrology, hydraulics, erosion/sedimentation and fan dynamics.

Subject Headings: Alluvial channels | Fluid flow | River flow | Water flow | Sediment transport | Hydrology | Fluid velocity | Topography

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