Low-flow characteristics of Kentucky streams
Water-Resources Investigations Report
91-4097
By: K.J. Ruhl and G. R. Martin
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Abstract
Low-flow characteristics were determined for 136 continuous-record and 212 low-flow partial-record streamflow gaging stations in Kentucky. Low-flow frequency curves were developed for the continuous-record gaging stations from daily mean streamflows for unregulated periods of 10 years or more. Through graphical correlation with data from one or more of the continuous-record stations, estimates of selected low-flow frequency values were also made at each of the partial-record stations.
Techniques are presented to estimate the 7-day 2-year and 7-day 10-year low-flow frequency values for ungaged, unregulated streams in Kentucky. These frequency values were determined at each of the continuous-record gaging stations and were related to basin characteristics and streamflow indices using multiple linear regression. The most significant variables for estimating the 7-day 2-and 10-year low-flow values from the analysis were drainage area and streamflow-variability index. The equations developed to estimate the 7-day 2-year and the 7-day 10-year low flows have a standard error of estimate of 71 and 90 percent, respectively.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Low-flow characteristics of Kentucky streams |
| Series title | Water-Resources Investigations Report |
| Series number | 91-4097 |
| DOI | 10.3133/wri914097 |
| Edition | - |
| Year Published | 1991 |
| Language | ENGLISH |
| Publisher | U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports Section [distributor], |
| Description | v, 50 p. :ill., maps ;28 cm. [PGS 51 p.] |
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