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moving about the reservoir rather than spending the entire year in Red Canyon. The fish at large for the longest time, #1044, showed movement typical of striped bass. It moved from the San Juan Arm to upper Navajo Canyon where it was recaptured. The journey included 70 miles of travel toward the dam followed by 10 miles of uplake travel to the recapture location. The 80 mile distance between these points could have been retraced many times in 42 months. The most remarkable fish (#1206 and 1086) were tagged April 23, 1986 at the same time and from the same school (7 miles from the dam). One fish was recaptured 6 days later after joining the prespawning aggregation of fish at the dam. The other fish traveled 90 miles uplake in the space of 5 weeks. Personal observation combined with tagging studies and sport fish harvest data indicate that striped bass exhibit bipolar migration toward the tributaries and toward the dam in the spring. Prespawning staging occurs as early as March and continues until early June. Spawning occurs in May followed by a dispersal from springtime holding areas. Then striped bass appear to move generally toward midlake in the summer. Fall movement directly relates to forage availability. Random movement of striped bass ceases when abundant forage is found. Striped bass stay with a shad school feeding at the same time each day until the school is consumed, disperses or moves. Random movement resumes as new foraging opportunities are needed. winter movement appears negligible with fish becoming dormant near where the last foraging opportunity occurred. Spring warming causes a return to the prespawning holding areas near the tributary mouths or the dam. In years where forage has been plentiful and remains available in the fall, striped bass tend to stay stationary. In Lake Powell, the usual case is that striped bass eliminate most shad from an area and then are forced to move to find more food. The tributary inflow areas are more productive and produce the 32