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:
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
PERIOD OF RECORD.--
March to December 1903, and January to
February 1904 (gage height only), November 1911 to May 1912 and
November 1912 to December 1912 (Monthly discharges only, published in
WSP 1302), January 1906 to October 1911, June 1912 to October 1912, and
January 1913 to current year. Published as "near Boonton"
1903-4, and as "at Boonton" 1906-37.
WSP 1902: 1951-54. WDR NJ-79-1: 1949(M),
1952(M), 1968(M), 1970-74(M), 1977(M). WDR US-2010: 2009 Sewage
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 (records given herein supplied by
Rockaway Valley Regional Sewerage Authority). Flow regulated by Boonton
Reservoir (see 01380900) 2,000 ft upstream from station, and by
Splitrock Reservoir (see 01379990) 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
/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
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.
LOWEST DAILY MEAN:COLUMN4:DATE:REPLACE Many days
ANNUAL SEVEN-DAY MINIMUM:COLUMN4:DATE:REPLACE Many days INSTANTANEOUS
LOW FLOW:COLUMN4:DATE:REPLACE Many days MAXIMUM PEAK
STAGE:COLUMN4:VALUE:a Maximum peak stage since 1925.
National Weather Service flood stage for this
gage is 5 feet.