Ramapo River near Mahwah, Bergen County NJ (MAWN4)
Gage Location: Bergen County, New JerseySite Location: Bergen County, New Jersey
Latitude: 41.098Longitude: -74.163Elevation: 253.1 ft. MSLDrainage Area: 120 Sq. Mi.
Minor Stage: 8 ft. Moderate Stage: 9 ft.Major Stage: 12 ft.
First Flood: 1903-10-09Last Flood: 2014-05-01 Crest: 8.15 ft.Datum change: 1936-12-24Number of Floods: 103

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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
6 ft to 7 ft11.06 ft or above 103100.0
7 ft to 8 ft00.07 ft or above 10299.0
8 ft to 9 ft5856.38 ft or above 10299.0
9 ft to 10 ft2524.39 ft or above 4442.7
10 ft to 11 ft98.710 ft or above 1918.4
11 ft to 12 ft54.911 ft or above 109.7
12 ft to 13 ft32.912 ft or above 54.9
13 ft to 14 ft11.013 ft or above 21.9
14 ft to 15 ft00.014 ft or above 11.0
15 ft to 16 ft11.015 ft or above 11.0
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
8 ft to 9 ft5556.18 ft or above 98100.0
9 ft to 10 ft2424.59 ft or above 4343.9
10 ft to 11 ft99.210 ft or above 1919.4
11 ft to 12 ft44.111 ft or above 1010.2
12 ft to 13 ft33.112 ft or above 66.1
13 ft to 14 ft11.013 ft or above 33.1
14 ft to 15 ft00.014 ft or above 22.0
15 ft to 16 ft11.015 ft or above 22.0