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1 <br />1 <br />r <br />i <br />LIST OF FIGURES <br />Fi re Description Page <br />1. Yampa River study area. 4 <br />2. Hydrographs of the Yampa River at Craig, Maybell, and <br />Deerlodge gage stations in 1988 through 1991, showing <br />pre-runoff, runoff, and baseflow periods. 7 <br />3. Flow pattern comparisons in the Yampa River at the Craig and <br />Maybell gage stations from March through September over the <br />1988-1991 study period. 12 <br />4. Seasonal temperature regime comparisons for the Yampa River <br />at the Maybell gage site over the 1988-1991 study period. 15 <br />5. Length frequency distributions of northern pike in the Yampa <br />River by year. 19 <br />6. Length frequency distributions of northern pike in the Yampa <br />River by river reach for 1986-1991. 22 <br />7. Length weight relationships for northern pike in the Yampa <br />River by year and by river reach. 26 <br />8. Length-weight regression coefficients with 95 % confidence <br />intervals for northern pike in the Yampa River by year and by <br />river reach. 28 <br />9. Average length (mm TL) and condition factor (K) for northern <br />pike by year and river reach. 31 <br />10. Relative weight indices (Wr) for northern pike by year and <br />river reach. 34 <br />11. Comparison of length frequency distributions of northern pike <br />used in stomach content analyses for fish containing food <br />items, fish with empty stomachs, and total northern pike sample. 37 <br />12. Food habits and prey composition of Yampa River northern pike <br />by major food categories and relative abundance of fish species <br />found as ingested prey. 39 <br />vii