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         Petaluma River  | 
     
     
         | Topic | 
         Flow: Monthly Average Petaluma River at Petaluma 1949-1963 | 
     
 
 
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   Caption:  This chart displays monthly average Petaluma River discharge (cfs) at Petaluma, CA.  Petaluma River is an ephemeral stream.  Stormflow peaks generally occur during winter months and are caused by precipitation runoff.  Summer and Fall base flows average between 0-3 cfs.  Whiskers bracket one standard error from the mean.  Monthly flows are compiled by the US Geological Survey from streamflow measurements gathered at USGS gage #11459000 from water years 1956 and 1981.  See Info Links for more information. 
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 flow_monthlyave_petaluma_river_1949_1963.dbf (size 466 bytes)  To download the table with the chart's data as an Excel spreadsheet, click 
 flow_monthlyave_petaluma_river_1949_1963.dbf.xls (size 4,096 bytes)  .