Calculating weighted estimates of peak streamflow statistics
Fact Sheet
2012-3038
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Abstract
According to the Federal guidelines for flood-frequency estimation, the uncertainty of peak streamflow statistics, such as the 1-percent annual exceedance probability (AEP) flow at a streamgage, can be reduced by combining the at-site estimate with the regional regression estimate to obtain a weighted estimate of the flow statistic. The procedure assumes the estimates are independent, which is reasonable in most practical situations. The purpose of this publication is to describe and make available a method for calculating a weighted estimate from the uncertainty or variance of the two independent estimates.
Suggested Citation
Cohn, T., Berenbrock, C., Kiang, J.E., Mason, 2012, Calculating weighted estimates of peak streamflow statistics: U.S. Geological Survey Fact Sheet 2012-3038, 4 p., https://doi.org/10.3133/fs20123038.
ISSN: 2327-6932 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Calculating weighted estimates of peak streamflow statistics |
| Series title | Fact Sheet |
| Series number | 2012-3038 |
| DOI | 10.3133/fs20123038 |
| Year Published | 2012 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | National Center |
| Description | 4 p. |
| Country | United States |