Technique for estimating the 2- to 500-year flood discharges on unregulated streams in rural Missouri
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Abstract
A generalized least-squares regression technique was used to relate the 2- to 500-year flood discharges from 278 selected streamflow-gaging stations to statistically significant basin characteristics. The regression relations (estimating equations) were defined for three hydrologic regions (I, II, and III) in rural Missouri. Ordinary least-squares regression analyses indicate that drainage area (Regions I, II, and III) and main-channel slope (Regions I and II) are the only basin characteristics needed for computing the 2- to 500-year design-flood discharges at gaged or ungaged stream locations. The resulting generalized least-squares regression equations provide a technique for estimating the 2-, 5-, 10-, 25-, 50-, 100-, and 500-year flood discharges on unregulated streams in rural Missouri. The regression equations for Regions I and II were developed from stream-flow-gaging stations with drainage areas ranging from 0.13 to 11,500 square miles and 0.13 to 14,000 square miles, and main-channel slopes ranging from 1.35 to 150 feet per mile and 1.20 to 279 feet per mile. The regression equations for Region III were developed from streamflow-gaging stations with drainage areas ranging from 0.48 to 1,040 square miles. Standard errors of estimate for the generalized least-squares regression equations in Regions I, II, and m ranged from 30 to 49 percent.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Technique for estimating the 2- to 500-year flood discharges on unregulated streams in rural Missouri |
| Series title | Water-Resources Investigations Report |
| Series number | 95-4231 |
| DOI | 10.3133/wri954231 |
| Edition | - |
| Year Published | 1995 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey ; Earth Science Information Center, Open-File Reports Section [distributor], |
| Publisher location | Richmond, Virginia |
| Contributing office(s) | Missouri Water Science Center |
| Description | iv, 33 p.: maps ;28 cm. |
| Country | United States |
| State | Missouri |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |