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Multiple Phenomena of Debris-Flow Processes: A Challenge for Hazard Assessments

by Christopher C. Mathewson, Texas A&M Univ, College Station, United States,
Jeffrey R. Keaton, Texas A&M Univ, College Station, United States,



Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H?AL)

Abstract:

Hazardous hydraulic processes associated with arid environments commonly repesent significant risks to the safety of the public. However, the public generally considers these risks to be mininal until an event occurs. In the case of debris flows, the detemination of recurrence intervals is controlled by numerous interacting factors that generate debris flow events having different recurrence intervals. The engineer or hazard response planner must, therfore, understand the phenomena that controls each individual event to determine the risk to the public. In Davis County, Utah for example, debris flows have estimated average recurrence intevals of about 100, 3,000 and 10,000 years depending upon the debris-flow phenomena selected for evaluation.

Subject Headings: Public health and safety | Solids flow | Debris | Risk management | Natural disasters | Hydraulics | Floods | Utah | United States

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