South Branch Potomac River near Petersburg, Grant County WV (PETW2)
Gage Location: Grant County, West VirginiaSite Location: Grant County, West Virginia
Latitude: 38.991Longitude: -79.176Elevation: 968.34 ft. MSLDrainage Area: 651 Sq. Mi.
Minor Stage: 14 ft. Moderate Stage: 15 ft.Major Stage: 17 ft.
First Flood: 1877-11-24Last Flood: 2010-01-25 Crest: 14.86 ft.Datum change: 2011-03-16Number of Floods: 29

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Year
Before Datum Change
Number of Floods
18771
18780
18790
18800
18810
18820
18830
18840
18850
18860
18870
18880
18890
18900
18910
18920
18930
18940
18950
18960
18970
18980
18990
19000
19010
19020
19030
19040
19050
19060
19070
19080
19090
19100
19110
19120
19130
19140
19150
19160
19170
19180
19190
19200
19210
19220
19230
19241
19250
19260
19270
19280
19290
19300
19310
19321
19330
19340
19350
19361
19370
19380
19391
19401
19410
19422
19430
19440
19450
19460
19470
19480
19491
19500
19510
19520
19530
19541
19550
19560
19570
19580
19590
19600
19610
19620
19631
19640
19650
19660
19671
19680
19690
19700
19710
19721
19731
19741
19751
19761
19770
19781
19790
19800
19810
19821
19830
19841
19851
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19963
19970
19980
19990
20000
20010
20020
20031
20040
20050
20060
20072
20081
20090
20101
Year
After Datum Change
Number of Floods
20110
20120
20130
20140