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1 1 1 1 1 1 1 n 1 1 above the river, in a location where fishermen had been previously ob- served. The other fish that had been in the Gunnison similarly returned to the 15-mile reach in late October or early November and overwintered near RM 184.1. In mid March 1988 it began making local movements and appeared to stay within the reach until the tag failed in late July. Three squawfish were captured from the Gunnison River and radio-tagged in mid August 1987; contact was lost with one of the fish immediately and then with another a month later after it had moved 34 miles downstream. The third fish moved downstream about 38 miles during the following month and stayed in the Black Rocks area until at least mid-November. We re- gained contact with this fish the following April when it moved back into the Grand Valley. It remained in the lower 18-mile reach until mid-June 1988 when it then moved up into the 15-mile reach. In early July it traveled downstream to the mouth of the Gunnison River, which at that time had extremely low flow because of low runoff and heavy irrigation demand; the fish then briefly returned to the 15-mile reach in mid-July before moving back downstream to the Black Rocks area. After some local movement in that area, it remained at Black Rocks from mid-September through at least the end of October. In 1988, eight squawfish from the 15-mile reach, one from the 18-mile reach and one from the lower Gunnison River were equipped with radio transmitters. Contact was lost almost immediately with one fish; another moved from the 15-mile reach downstream to the Walker Wildlife Area (RM 164.0) at the end of June and either died or lost its transmitter there. Another fish (T) moved downstream and either died or lost its tag at RM 167.0 after only one month (Fig. 8). One (U) tagged at RM 175.4 on 1 June was located a mile up the Gunnison River the following week; a week later 19 I