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TABLE OF CONTENTS INTRODUCTION ........................................................ General Setting.................................................. Ob j ec t i ves ....................................................... HETHODOLOGY ......................................................... St udy Area ........................................................ Gunnison River ................................................ Do lor e sRi v e r ................................................. Sample Design .................................................... Ph Y sic a 1 - Ch em i c alP a r ame t e r s .................................. Watercraft ....................................................... Sample Gear ...................................................... Electrofishing ................................................ Trammel Nets .................................................. Gi 11 Nets ..................................................... Fyke Nets ..................................................... Seines ........................................................ Fish Handling.................................................... Target Species ................................................ Other Species ................................................. Habitat Parametei.-s ............................................... Analyses ......................................................... RESULTS AND DISCUSSION .............................................. Physical and Chemical Description.... ............ ...... ...... ..... Gunnison River ................................................ Dolores River................................................ Species Composit ion .............................................. Species Composition by Stratum................................... Gunni son River ................................................ Dolores River ................................................. - Species Composition by Habitat.... .... ............. .... ...... ..... Gunnison River ................................................ Dolores River ................................................. Species Composition by Flow....................................... Gunnison River ................................................ Dolores River ................................................. Colorado Squawfish ............................................... Gunnison River ................................................................................................ Dolores River ...................... ..... ... ............................................. Razorback Sucker ................................................. Bony tail and Humpback Chub ....................................... SUt-fHARY .............................................................. 40 Gunnison River.................................................... 40 Do lores River..................................................... 41 RECO).jHENDATIONS ..................................................... 42 Gunnison River.................................................... 42 Dolores River..................................................... 43 LITERATURE CITED .................................................... 44 ^ cl" A-I l)l)en lX 1'\........................................................ .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. , .. .. .. .. .. .. .. .. .. .. .. .. .. .. Page No. 1 1 1 1 1 1 2 2 4 4 4 4 5 5 5 5 5 5 6 6 6 7 7 7 13 14 17 17 20 23 23 31 35 35 35 35 35 38 39 39