Habitat Suitability Index Models: Regression models based on harvest of cool and coldwater fishes in reservoirs

The methods presented in this report are designed to permit habitat classification of reservoirs, containing coolwater, coldwater, and seasonal two-story fisheries, based on harvest of selected coolwater and coldwater sport fishes. Multiple regression equations describing relations between reservoir environmental characteristics and biomass harvest of selected sport fish species or groups are presented. Cumulative Frequency (CF) plots of known harvest estimates from the various classes of reservoirs are presented to facilitate conversion of harvest predictions to Habitat Suitability Indices (HSI's). Detailed descriptions and limitations of the procedures are discussed.