Schuylkill River at Norristown, Montgomery County PA (NRSP1)
Gage Location: Montgomery County, PennsylvaniaSite Location: Montgomery County, Pennsylvania
Latitude: 40.111Longitude: -75.347Elevation: 51 ft. MSLDrainage Area: 1760 Sq. Mi.
Minor Stage: 13 ft. Moderate Stage: 17 ft.Major Stage: 19 ft.
First Flood: 1933-08-24Last Flood: 2013-01-31 Crest: 13.99 ft.Datum change: 2011-08-17Number of Floods: 20

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Height Above Flood Stage for Entire Period of Record
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
13 ft to 14 ft315.013 ft or above 20100.0
14 ft to 15 ft15.014 ft or above 1785.0
15 ft to 16 ft15.015 ft or above 1680.0
16 ft to 17 ft420.016 ft or above 1575.0
17 ft to 18 ft210.017 ft or above 1155.0
18 ft to 19 ft210.018 ft or above 945.0
19 ft to 20 ft420.019 ft or above 735.0
20 ft to 21 ft00.020 ft or above 315.0
21 ft to 22 ft15.021 ft or above 315.0
22 ft to 23 ft15.022 ft or above 210.0
23 ft to 24 ft00.023 ft or above 15.0
24 ft to 25 ft00.024 ft or above 15.0
25 ft to 26 ft15.025 ft or above 15.0
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
13 ft to 14 ft350.013 ft or above 6100.0
14 ft to 15 ft116.714 ft or above 350.0
15 ft to 16 ft00.015 ft or above 233.3
16 ft to 17 ft116.716 ft or above 233.3
17 ft to 18 ft00.017 ft or above 116.7
18 ft to 19 ft00.018 ft or above 116.7
19 ft to 20 ft116.719 ft or above 116.7
20 ft to 21 ft00.020 ft or above 00.0
21 ft to 22 ft00.021 ft or above 00.0
22 ft to 23 ft00.022 ft or above 00.0
23 ft to 24 ft00.023 ft or above 00.0
24 ft to 25 ft00.024 ft or above 00.0
25 ft to 26 ft00.025 ft or above 00.0