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Low-flow characteristics of Kentucky streams

Water-Resources Investigations Report 91-4097

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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.

Additional Publication Details

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
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.]