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<br />Daily observations <br /> <br />Each day scheduled for observation was divided into four observation periods. Each <br />observation period was approximately six hours duration and was determined by sunrise <br />and sunset. Based on previous habitat research, the two most important time periods are <br />near sunrise and sunset. Time periods were numbered as follows: <br />· Period I - three hours before to three hours after sunrise; <br />· Period 2 - three hours after sunrise to three hours before sunset; <br />· Period 3 - three hours before sunset to three hours after sunset; and <br />· Period 4 - three hours after sunset to three hours before sunrise. <br /> <br />The selected Colorado squawfish was located and tracked for a two hour period. Any <br />locations where the fish remained for more than 30 minutes were marked, and later <br />measured for habitat variables. <br /> <br />RESULTS <br /> <br />Colorado Squawfish <br /> <br />Colorado Squawfish #40:7810 (CS781) <br /> <br />CS781 was captured by electrofishing at RM 94.6 on 25 July 1996. This fish was <br />captured about ten feet offshore immediately downstream from a man-made rock <br />outcropping. CS781 was not located by ground crews again until 11 Sep. 1996 (Week 5). <br />However, the fish was reportedly located by air during each week after it's original <br />capture. An attempt was made to confirm air locations by ground crews during each <br />observation week. Attempts by ground crews consisted of a minimum float by canoe <br />from two miles upstream of the air location to two miles below. Results of location <br />attempts by ground crews were negative on all occasions until the fish was located from <br />the air at RM 89.8 by a member of the Miller Ecological Consultants crew. CS781 <br />remained in this same habitat throughout the remainder of the study (Figures I and 2). <br /> <br />Immediately after locating CS781 on 11 September 96 a 24 hour observation was <br />conducted. The fish appeared to move only slightly during this time (Figure 3). CS781 <br />was located in the exact same position (RM 89,8) during each following observation <br />week during the study. It is possible that this fish has expelled the transmitter or is dead. <br /> <br />Yampa River Radio Telemetry Repon <br />Miller Ecological Consultants, IDe, <br /> <br />Page 4 <br />January 23, 1997 <br />