Accession Number:

ADA235608

Title:

Regional Frequency Computation Users Manual.

Descriptive Note:

Corporate Author:

HYDROLOGIC ENGINEERING CENTER DAVIS CA

Personal Author(s):

Report Date:

1972-07-01

Pagination or Media Count:

52.0

Abstract:

The purpose of this program is to perform frequency computations of annual maximum hydrologic events necessary to a regional frequency study. Frequency statistics are computer for recorded events at each station and for each duration. Missing events are computed so that complete sets of events are obtained for all years at all stations while preserving all inter-correlations. These are arranged in the order of magnitude for each station and duration and tabulated with median plotting positions. Statistics for each station are then adjusted to the complete period of region record, and frequency curves are computed in accordance with procedures given in Statistical Methods in Hydrology by Leo R. Beard, January 1962, using the logarithmic Pearson Type III function and the expected-probability concept. The use of all long-record stations instead of only one for the extension of frequency statistics at short-record stations is considered to constitute some advantage over procedures given in Statistical Methods. As an alternative use of this program, frequency statistics can be supplied and curves will be computer.

Descriptors:

• *COMPUTER PROGRAMS
• *HYDROLOGY
• *STATISTICAL PROCESSES
• STATIONS
• COMPUTATIONS
• RANDOM NUMBER GENERATORS
• FORTRAN
• PLOTTING
• COMPILERS
• USER MANUALS
• FREQUENCY

Subject Categories:

• Hydrology, Limnology and Potamology
• Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE