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Frequent measurements on a wide variety of other parameters have been collected, but they have rarely exceeded the recommended limits (Utah Division of Water Quality, unpublished data). The Price River warmed earlier than the Green River in 1996 (Figure 4). A similar trend began to develop in 1997, but the water level dropped below the level of the thermograph in the Price River, so no data are available from the Price River for much of the early summer. The Green River was warmer than the Price River during the late summer and early fall of both years of the study, but the average temperatures of both the Price River and the Green River were cooler during much of the spring, summer, and fall periods of 1997 than during comparable periods in 1996. Habitat complexity in the Price River was fairly low in both 1996 and 1997. The Woodside section was composed mainly of runs, sepazated by short riffles, while habitat in the Canyon area was dominated by runs separated by rapids. Very few pools existed in either area during high water. More pools developed as the flows declined, but they were small and uncommon. Maximum pool depth during Iow water was approximately 8 feet. Most of the pools were only 4 to 5 feet deep, with runs approximately 2 to 3 feet deep in the Woodside section and 3 to 4 feet deep in the Canyon section. During high discharge periods, all habitats were approximately 2 to 5 feet deeper than during low water periods. The average width (P=0.0009; Figure 5), depth (P=0.0011; Figure 6) and velocity (P=0.0001; Figure 7) of all habitat monitoring sites on the Price River stations combined were significantly greater in 1997 than in 1996. The maximum wetted width ranged from approximately 9 to 18 meters in 1996 and 12 to 19 meters in 1997 (Figure 8). Wetted width tended to decrease through the summer until the irrigation season ended, after which the width increased slightly (Figure 8). Water depth (Figure 9) and velocity (Figure 10) followed similar patterns. Water depth and velocity were fairly uniform across the channel at most hansects. However, there were no consistent trends in habitat parameters from upstream stations to downstream stations (Figures 8-10). Figure 11 shows a compilation of all substrate data collected in the five habitat monitoring sites for 1996 and 1997. The substrate in runs was composed mainly of sand, but gravel and cobble were also common, and these two substrates were dominant in riffles. Cobbles and boulders were the most common substrates in rapids. The reduction in the amount of clay and silt, and the corresponding increase in the amount of sand and boulders noted in 1997, correspond with the higher discharges observed in 1997. No sediment transport, bed load, or other geomorphic characteristics were measured during this study, but it appears that the Price River moves a massive amount of material. Total dissolved solids in the Price River exceed the limit recommended by the Utah Division of Water Quality 85.2% of the time (Table 2). Near the confluence with the Green River, the Price River deposited an extensive amount of sediment in the channel and on the banks as the high flows receded. However, as the summer progressed, this sediment was removed. By early fall, the channel and banks looked similar to the way they did before sediment deposition. Water clarity was only 1 to 3 three inches for most of the summer, but it increased to approximately 2 feet when the irrigation season came to an end each year. This parameter increased to approximately 6 feet before spring run off began in 1998 (personal observation). 7