During winter months, cold and ice may
result in inaccurate real-time gage height and streamflow data.
Adjustments or deletions of this data can only be done after detailed
Funding for this site is provided by:
Lat 40°53'49", long 74°23'41"
referenced to North American Datum of 1983, Boonton Town, Morris
County, NJ, Hydrologic Unit 02030103, on right bank 2,000 ft downstream
from Boonton Reservoir Dam at Boonton, and 0.4 mi upstream from bridge
on Greenbank Road.
PERIOD OF RECORD.--
Gage-height only, March 1903 to February
1904. Monthly discharges only, November 1911 to May 1912 and November
1912 to December 1912. Continuous-record discharge station, January
1906 to October 1911, June 1912 to October 1912, and January 1913 to
current year. Published as "near Boonton" 1903-1904, and as
"at Boonton" 1906-1937.
WSP 1902: 1951-54. WDR NJ-79-1: 1949(M),
1952(M), 1968(M), 1970-74(M), 1977(M). WDR US-2010: 2009 Sewage
effluent. On June 1, 2020 peak streamflow for the 2017 water year was
Water-stage recorder with telemetry. Concrete control
since Nov. 5, 1936. Datum of gage is 195.68 ft above NGVD of 1929
(levels from New Jersey Geological Survey benchmark). Mar. 15, 1903 to
Feb. 2, 1904, non-recording gage at site 1.9 mi downstream at different
datum. Jan. 1, 1906 to Mar. 2, 1918, non-recording gage on Boonton
Reservoir Dam 2,000 ft upstream at datum 305.25 ft above NGVD of 1929
(levels from New Jersey Geological Survey benchmark). Records for Mar.
3, 1918 to Sept. 30, 1924 are based on a recording gage at present site
operated by Jersey City Water Department and staff gage readings at
Boonton Reservoir Dam by Jersey City Water Department.
Records good, except for estimated discharges, which
are fair. Records represent flow in river only. Sewage effluent enters
river about 600 ft below station. Flow regulated by Boonton Reservoir
(see 01380900) 2,000 ft upstream from station, and by Splitrock
Reservoir 16.5 mi above station. Water diverted from Boonton Reservoir
for municipal supply of Jersey City.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 7,390 ft³/s,
Aug 28, 2011, gage height, 9.73 ft; minimum discharge, no flow Oct 10,
1903, and part or all of many days 1904 to current.
EXTREMES OUTSIDE PERIOD OF RECORD.--
The flood of Oct 10, 1903
had a maximum daily mean flow of 7,560 ft³/s with a daily mean gage
height of 7.8 ft, site and datum then in use.
National Weather Service flood stage for this
gage is 5 feet.