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Caption: This chart displays average monthly discharge (cfs) in San Geronimo Creek at the Lagunitas Road Bridge. Higher flows occur during winter months in response to storm events and high base flows. Low base flows between May through October reduce the average monthly stream flow to less than 5 cfs. Whiskers bracket one standard error from the mean. Monthly flows were compiled from stream gauge measurements gathered between water years 1980 and 2001. Data were collected by Balance Hydrologics, Inc. for the Marin Municipal Water District. See Info Links for more information.
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