Study objectives were to use a conduit net to relate operational and environmental factors with fish passage. Fish passage was inversely correlated (p<0.05) with pool elevation and positively correlated with discharge volume and night samples. Fish passage was not significantly correlated (p>0.15) with release velocity or water temperature. Regression equations explained 49-68% of the variability in fish passage. Nearly 85% of all fish and 97% of all shad were discharged during December 1993 - February 1994. Gizzard shad, white crappie, black crappie and freshwater drum comprised 78.52%, 15.34%, 1.54% and 1.41% of the total numerical loss, respectively. Fish in the 9 and 10 centimeter groups accounted for 66.37% of the catch while those over 20 centimeters comprised just 2.75%. Tailwater tag recaptures comprised 9.7% of all recaptures and 1.2% of all tagged fish, but tag mortality and tag shedding were not assessed. The tailwater crappie fishery appeared to be dependent on fish passage. These data suggest that fish passage could be reduced by maintaining higher pool elevations during the winter; reducing night time releases and avoiding releases > 1000 cfs during the fall and winter. Negative impacts to the Enid Lake fishery resulting from fish passage were not evident.