Susquehanna River at Harrisburg, Dauphin County PA (HARP1)
Gage Location: Dauphin County, PennsylvaniaSite Location: Dauphin County, Pennsylvania
Latitude: 40.255Longitude: -76.886Elevation: 290.01 ft. MSLDrainage Area: 24100 Sq. Mi.
Minor Stage: 17 ft. Moderate Stage: 20 ft.Major Stage: 23 ft.
First Flood: 1786-10-05Last Flood: 2011-09-09 Crest: 25.17 ft.Datum change: 1928-10-01Number of Floods: 48

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Year
Before Datum Change
Number of Floods
17861
17870
17880
17890
17900
17910
17920
17930
17940
17950
17960
17970
17980
17990
18000
18010
18020
18030
18040
18050
18060
18070
18080
18090
18100
18110
18120
18130
18140
18150
18160
18170
18180
18190
18200
18210
18220
18230
18240
18250
18260
18270
18280
18290
18300
18310
18320
18330
18340
18350
18360
18370
18380
18390
18400
18410
18420
18430
18440
18450
18461
18470
18480
18490
18500
18510
18520
18530
18540
18550
18560
18570
18580
18590
18600
18610
18620
18630
18640
18651
18660
18670
18681
18690
18700
18710
18720
18730
18740
18750
18760
18770
18780
18790
18800
18810
18820
18830
18840
18850
18861
18870
18880
18891
18900
18911
18920
18930
18941
18950
18960
18970
18980
18990
19000
19010
19021
19030
19041
19050
19060
19070
19080
19090
19101
19110
19120
19131
19141
19150
19161
19170
19180
19190
19201
19210
19220
19230
19241
19251
19261
19270
Year
After Datum Change
Number of Floods
19280
19290
19300
19310
19320
19330
19340
19350
19361
19370
19380
19390
19401
19410
19420
19431
19440
19450
19461
19470
19480
19490
19501
19510
19520
19530
19540
19550
19560
19570
19580
19590
19601
19611
19620
19630
19641
19650
19660
19670
19680
19690
19700
19711
19721
19730
19740
19752
19760
19770
19780
19791
19800
19810
19821
19831
19842
19850
19861
19870
19880
19890
19900
19910
19920
19931
19941
19950
19961
19970
19981
19990
20000
20010
20020
20030
20041
20052
20061
20070
20081
20090
20100
20113
20120
20130
20140