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Caption: The floating weekly average water temperature of Lower Hayfork Creek is shown above for the years 1991-1992. Water temperatures in Lower Hayfork Creek were acutely for salmonids throughout the summer in both years. The maximum weekly average temperature (MWAT) exceeded the threshold for suitability for coho salmon according to Welsh et al. (2001). Data provided by Shasta Trinity National Forest but was trimmed for outliers by the Forest Science Project (now known as the Institute for Forest and Watershed Management). See Info Links for more information.
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