| Area   | 
         Shasta  | 
     
     
         | Topic | 
         Temperature: Hourly at Highway 263 (May 1992) | 
     
 
 
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   Caption:  Data shows a continuous rise in temperatures at Highway 263 from May 1 to May 8, 1992.  Note that there is about a 7 degree Celsius (12.6 F) rise and fall in temperatures daily. In the central portion of the graph (about May 7), most hours in the day are above stressful levels for salmon and steelhead.  Data from the North Coast Regional Water Quality Control Board. Stress reference of 20 C from McCullough (1999). See Info Links for more information.
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 gwcelc1.dbf (size 452,307 bytes)