Journal Facts

Journal
Journal of Environmental Systems
ISSN
0047-2433 (print) 1541-3802 (electronic)
Volume
22
Issue
4
Date
1/1/1992

Article Facts

Title
Estimation of Instream Flow Requirements for Fish
DOI
10.2190/5M3M-54B2-QB5K-DRR4
Authors
  • A. R. Rao
  • T. Voeller
  • J. W. Delleur
  • A. Spacie
Pages
381-396
Online Date
05/09/2002

Article Links

Estimation of Instream Flow Requirements for Fish

A. R. Rao
T. Voeller
J. W. Delleur
A. Spacie

DOI: 10.2190/5M3M-54B2-QB5K-DRR4

Abstract

Flows required for sustaining fish population in a stream are examined in this study. The instream flow incremental methodology (IFIM) which has been developed for estimating these flows requires data which are not commonly available and are expensive to acquire. Other methods to estimate instream flows, which are based only on flow rates, do not consider the characteristics of the fish population in the stream and hence are unrealistic. A modification of the IFIM is proposed in this study. Various factors which are involved in the modification are investigated. Based on these investigations, a method which is much less data intensive than the IFTM but which gives results of the same order of magnitude as the IFIM is proposed. The method is illustrated by using data from streams in Indiana.

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