Interactive programs for low-flow frequency analyses for use in regional studies
Seven-day ten-year low-flow values have been used as indices of water availability for regional energy facility siting. This paper describes an automated system for generating low-flow frequency distributions for United States Geological Survey streamflow gaging sites. Since no single frequency distribution will match the low flow frequencies at all stream gaging stations, it is necessary to examine several possible distributions for each station to determine the most useful one. Four representative low flow frequency distributions, Gumbel's limited distribution of the smallest value, the Pearson Type III, the Log-Pearson III, and the Log-Normal distributions, have been chosen for inclusion in an interactive set of programs, named LOFL02. LOFL02 forms one analysis module of the ORNL Water Analysis System (WAS), and when used in conjunction with other WAS programs makes frequency analysis viable on a regional scale by facilitating the handling of large amounts of data for large numbers of stations.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6537357
- Report Number(s):
- ORNL/TM-5893
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
STREAMS
FLUID FLOW
WATER RESOURCES
REGIONAL ANALYSIS
COMPUTER CALCULATIONS
COMPUTER CODES
DATA ANALYSIS
L CODES
SAMPLING
SURFACE WATERS
W CODES
RESOURCES
580100* - Geology & Hydrology- (-1989)
520500 - Environment
Aquatic- Site Resource & Use Studies- (-1989)