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<br />Table 2. Average daily summer water temperature (maximum) of the Green and Yampa rivers, <br />Echo Park, Dinosaur National Park, Colorado, 2000 to 2002 (2002 through mid-July only). <br />Number of days where temperature of the Green River was 50C or more cooler than the Yampa <br />River is also shown; none of those days were in the period when Colorado pikeminnow larvae <br />were drifting from the Yampa River. <br /> <br /> Mean summer water temp C (maximum) Number of <br /> days difference <br />Year Green River Yampa River exceeded 50C <br />2000 17.0 (20.7) 19.7 (24.1) 2 <br />2001 19.0 (23.4) 20.5 (25.6) 1 <br />2002 19.0 (24.5) 21.5 (25.3) <br /> <br />FY 2002 Annual Report 22fPage - 14 <br />