Clyde River Environmental Flows: IFIM Evaluation of Minimum Flows

Abstract

This report describes an initial assessment of environmental flow requirements of the Clyde River. The Instream Flow Incremental Methodology (Bovee 1982, Jowett 1992, Stalnaker et al. 1995) is used to derive relationships between habitat availability for instream fauna an discharge. These relationships are then used in a risk assessment approach developed by Davies and Humphries (1996) and used for a variety of environmental flow assessments in Tasmania. This study focuses only on minimum flows for the irrigation ('summer') season, and does not attempt to derive an environmental flow regime for the Clyde, which would require a more extensive study.