Abstract
Alluvial fans along mountain bases pose interesting problems for highway crossings design and flood insurance studies. In this paper, Rosenblueth's point-estimate is applied to the FEMA (Federal Emergency Management Agency) alluvial fan method to compute the mean and standard deviation for the 100-year discharge at any point on the fan and the mean and standard deviation for the fan arc width. The mean and standard deviations for the 100-year discharge are used to obtain the risk that the 100-year discharge will exceed the discharge capacity of hydraulic structures. The mean and standard deviations for the fan arc width are used to estimate the risk that a given location on the fan is within the hazard flood zone. The HEC-1 rainfall-runoff computer model is used to compute inputs to the FEMA method. The proposed methodology is applied to an alluvial fan in north Scottsdale, Arizona.
| Original language | English (US) |
|---|---|
| Title of host publication | Risk-Based Decision Making in Water Resources, Proceedings of the Conference |
| Place of Publication | New York, NY, United States |
| Publisher | ASCE |
| Pages | 180-190 |
| Number of pages | 11 |
| State | Published - 1996 |
| Event | Proceedings of the 1995 7th Risk-Based Decision Making in Water Resources - Santa Barbara, CA, USA Duration: Oct 8 1995 → Oct 13 1995 |
Other
| Other | Proceedings of the 1995 7th Risk-Based Decision Making in Water Resources |
|---|---|
| City | Santa Barbara, CA, USA |
| Period | 10/8/95 → 10/13/95 |
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Environmental Science(all)