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DFLOW USER'S MANUAL
Citation:
Rossman*, L A. DFLOW USER'S MANUAL. U.S. Environmental Protection Agency, Washington, DC, EPA/600/8-90/051 (NTIS 90-225616), 1990.
Impact/Purpose:
to present information
Description:
DFLOW is a computer program for estimating design stream flows for use in water quality studies. The manual describes the use of the program on both the EPA's IBM mainframe system and on a personal computer (PC). The mainframe version of DFLOW can extract a river's daily flow record from EPA's STORET system and convert it into a format suitable for downloading to a PC. Both the mainframe and PC versions can compute aquatic life design flows based on either continuous duration or annual extreme value flow statistics and a human health design flow equal to a river's harmonic mean flow. The manual also describes the computational methods employed by DFLOW.