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r from 72.2 miles upstream (positive movement) to 40.5 miles downstream (negative movement). The majority of northern pike movement (78 %) was confmed to within + 1 miles between contact locations (Figure 20). Twenty-eight percent (28%) of the relocations showed no movement. Positive and negative movement within 10 miles from the fIrst location to a subsequent location were similar, comprising 10% and 9 %, respectively, of the individual movements recorded. Within that range, negative movement less than 5 miles occurred more frequently than positive movement for the same category. Overall, 38% of the observations showed upstream movement and 34% showed downstream movement. Tyus and Beard (1990) documented downstream movement of 78-110 kIn (48-68 miles) by northern pike downstream into Yampa Canyon. Valdez and Masslich (1989) found 7 of 8 northern pike showing a net downstream movement in the middle Green River of 0.5-27.7 miles. These authors also noted that radiotagged northern pike appeared very active in the localized area of low-velocity habitats such as eddies and slackwaters. They observed little sedentary behavior by northern pike. In other studies of large lake systems, Cook and Bergersen (1988) found northern pike movement up to 26 kIn (16 mi) in 3 days, but usually less than 400 mlday; Burkholder and Bernard observed northern pike movement of 130-140 kIn (81-87 miles); and Rich (1992) observed few long distance movements exceeding 10 Ian (6 miles) with a maximum movement of 14-21 Ion (8.7-13 miles) in 88-175 days. From the 267 floy-tagged northern pike released back into the river, recaptured fish provided 45 estimates of net movement (Table 5). For Floy-tagged northern pike, the range of individual net movement between contacts ranged from 83 miles upstream to about 473 miles downstream. Twenty-four percent of the relocations for Floy-tagged fish showed no movement. Two recaptured northern pike showed downstream movements in excess of 400 miles, and were clearly distinct from the rest of the floy-tagged fIsh sample. The next greatest downstream movement in this group of fIsh was 48.5 miles. This is more similar to the maximum downstream movement observed in the radiotagged fish group. The distribution of individual net movement for Floy-tagged fish was similar to that of radiotagged fIsh, but small, localized movements were not as predominant (36% vs 78%)(Figure 20). Also, the distribution of net individual movements in the + 10 mile range for Floy-tagged fish was similar with 24% showing negative movement and 22 % showing positive movement. In contrast to radiotagged fish data, there was more upstream movement of these fish versus downstream movement (13% vs 2%) in the 5-10 mile range, while there was less upstream movement versus downstream movement (9% vs 22%) for these fish in the 1-5 mile range. Overall for the Floy-tagged fish group, 33% showed upstream movement and 42 % showed downstream movement, which was slightly opposite in trend to the radio-tagged fIsh group. Daily mean movement rates for radio-tagged northern pike demonstrated upstream movement of up to 2.1 mild, with an average of 0.12 mild; and downstream movement of up to 5.2 mild with an average of 0.15 mild. Time between contacts for radio-tagged northern pike ranged from < 1 day to 248 d with an average of 46 days. One radio-tagged northern pike (Floy tag #5) was recaptured in the same location 412 d following the last radio contact. On a seasonal basis, northern pike tended to remain in a specific location in a specific habitat type, 57 I