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USGS 01387500 Ramapo River near Mahwah NJ

  Stream Site

DESCRIPTION:
Latitude 41°05'53",   Longitude 74°09'46"   NAD83
Bergen County, New Jersey, Hydrologic Unit 02030103
Drainage area: 120 square miles
Contributing drainage area: 120 square miles,
Datum of gage: 253.10 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    1981-10-01  2025-10-23  
 Daily Data
    Discharge, cubic feet per second  1902-10-01  2025-10-22  39102 
    Suspended sediment concentration, milligrams per liter  1964-02-27  1965-06-19  454 
    Suspended sediment discharge, short tons per day  1964-02-27  1965-06-19  479 
 Daily Statistics 
    Discharge, cubic feet per second  1902-10-01  2025-05-13 38942 
    Suspended sediment concentration, milligrams per liter  1964-02-27  1965-06-19 454 
    Suspended sediment discharge, short tons per day  1964-02-27  1965-06-19 479 
 Monthly Statistics 
    Discharge, cubic feet per second  1902-10  2025-05  
    Suspended sediment concentration, milligrams per liter  1964-02  1965-06  
    Suspended sediment discharge, short tons per day  1964-02  1965-06  
 Annual Statistics 
    Discharge, cubic feet per second  1903  2025  
    Suspended sediment concentration, milligrams per liter  1964  1965  
    Suspended sediment discharge, short tons per day  1964  1965  
 Peak streamflow 1903-10-09  2023-12-18  113 
 Field measurements 1936-03-12  2025-08-18  461 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1923-11-08  2023-09-11  470 
 Water-Year Summary 2006  2024  18 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS New Jersey Water Science Center
Email questions about this site to New Jersey Water Science Center Water-Data Inquiries