Potomac River at Point of Rocks, Frederick County MD (PORM2)
Gage Location: Frederick County, MarylandSite Location: Frederick County, Maryland
Latitude: 39.274Longitude: -77.543Elevation: 200.63 ft. MSLDrainage Area: 9651 Sq. Mi.
Minor Stage: 16 ft. Moderate Stage: 20 ft.Major Stage: 25 ft.
First Flood: 1889-06-02Last Flood: 2012-10-31 Crest: 18.19 ft.Datum change: 1929-10-28Number of Floods: 114

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MonthNumber
of
Floods
After
Datum
Number
of
Floods
Total
Cumulative
Total
After
Datum
Cumulative
Total
January8989
February10101819
March24324251
April16195870
May8106680
June477087
July007087
August127189
September677796
October6883104
November4487108
December6693114

Seasonal Totals
Winter (Dec-Jan-Feb)25
Spring (Mar-Apr-May)61
Summer (Jun-Jul-Aug)9
Fall (Sep-Oct-Nov)19