| Area   | 
         Petaluma River  | 
     
     
         | Topic | 
         Temperature: Min, Mean, and Max in Ellis Creek 1997-2001 | 
     
 
 
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   Caption:  Water quality parameters have been measured in an on-going program by the California Department of Fish and Game in various watersheds in Marin and Sonoma counties from 1991-2002.  This graph shows minimum, mean, and maximum water temperature measurements in Ellis Creek, a tributary of the Petaluma River, from 1997-2001.  The reference value of 10-15.6°C optimum temperature range for juvenile salmonid rearing is based on McCullough (1999).  Maximum water temperatures were in stressful ranges for steelhead trout. See the Info Links for more information.  
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