| ID |
325 |
| Citation |
Cheng, JD and DE Reksten. 1987. A Regional Peak Flow Study in Southern British Columbia, Canada.Regional Flood Frequency Analysis (V.P. Singh, editor), p. 77-90. D. Reidel Pub. Co. |
| Organization |
BC Ministry of Environment |
| URL |
|
| Abstract/Description or Keywords |
To provide assistance in estimating peak flows for hydraulic structure design associated with road development, drainage and flood control works, this study was undertaken in two areas in southern British Columbia with different peak flow generation mechanisms. The two study areas are (A) the lower Fraser Valley in southwestern B.C. near Vancouver where prolonged storms with high rainfall amounts are the major factor in causing annual peak flows; and (B) the South Thompson Basin in south central British Columbia near Kamloops where snowmelt is the dominant cause to annual peak flows. A mean annual daily peak flow map was first developed for both areas using peak flow data from gauged watersheds, topographic characteristics plus regionalized mean annual maximum 24 hr precipitation data for area A and regionalized mean annual precipitation data for area B. The regional frequency curves relating return period peak flows to mean annual daily peak flows were determined for identified subregions within each study area. The regionalized precipitation frequency data were derived from results of earlier studies using available climatic station records and a precipitation model based on orographic and frictionally induced vertical moisture flux parameters. |
| Information Type |
article |
| Regional Watershed |
All |
| Sub-watershed if known |
|
| Aquifer # |
|
| Comments |
|
| Project status |
complete |
| Contact Name |
|
| Contact Email |
|
