Water Stewardship Information Sources
| ID | 982 |
|---|---|
| Citation | Jakob, M and Jordan, P. 2001. Design flood estimates in mountain streams - the need for a geomorphic approach. Canadian Journal of Civil Engineering. 28:425-439. |
| Organization | FLNRO |
| URL | http://www.academia.edu/1501440/Design_flood_estimates_in_mountain_streams_the_need_for_a_geomorphic_approach |
| Abstract/Description or Keywords | Estimates of design flood frequencies are routinely required for engineering purposes on ungauged streamsand streams with a limited period of streamflow record. In these cases, the design flood is determined either by rainfallfrequency-duration analysis, regional analysis of streamflow data, or by extrapolation of a short record from a gaugedstream. Although these types of analyses are valuable in a first approximation of peak discharges for different returnperiods, there is increasing evidence that geomorphic processes such as debris flows, landslide dam failures, glacialoutburst floods, and even snow avalanches in the watershed can significantly exceed these estimates. This paper high-lights the problem of a purely hydrologic approach for design flood estimates using several case studies, and suggestsprocedures to routinely include geomorphic processes in standard flood frequency studies. Key words : debris flows, debris floods, landslide dams, flood hazards, outburst floods, frequency analysis |
| Information Type | article |
| Regional Watershed | All |
| Sub-watershed if known | |
| Aquifer # | |
| Comments | |
| Project status | complete |
| Contact Name | Peter Jordan |
| Contact Email | [email protected] |