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25 found in significantly (P < 0.05) higher velocities than juvenile cutthroat trout during the summer, but there was no significant (P > 0.05) difference between their velocities during the winter. Mean vel oc i t~ The activity of random swimming OCCurred in areas that con- sistently had lower mean velocities than the areas where station- ary swimming was observed (Tabl es 4 and 5). For all flows com- bined, this difference was significant (P < 0.05) for all life stages and during both seasons. For the activity of random swimming, mean velocities exhi- with increased flows. bited only slight seasonal differences and did not change greatly During stationary swimming, each life - stage occupied areas with significantly (P < 0.05) higher mean /elocities in summer than in winter, all flows combined. Mean velocities generally increased with increasing flows or adults of both species during stationary swimming. Both spe- ies of adults were found in si9nificantly (p < 0.05) higher mean elocities during1nedium flow than during low flows for each sea- on. They were also found in significantly (P < 0.05) higher ean velocities during high flows than during medium flows in the fnter. There was no significant (p > 0.05) difference between gh and medium flows in the summer for adults. Juvenile rainbow trout were fo u nd in signi ficantly < 0.05) lower mean velocities during high flows than during dium flows for both seasons, while stationary swimmi n9. venile cutthroat trout were never found in mean velocities ',~ '.1"'-- . ~'"{:.:- 'A - 1:,,;'; ~J;' L';'~" ~~l:,.. ~~;t;.'tf~