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  • UPDATE, 11/9: As of November 8, the USGS has successfully restored all of the operational gages that stopped transmitting due to an issue with the satellite telemetry system that records and transmits data. The USGS will now focus on restoring other equipment that experienced the telemetry issues, including about 85 rapid deployment gages that are used periodically for emergency response. Read more
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USGS 01390500 Saddle River at Ridgewood NJ


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LOCATION.--Lat 40°59'06", long 74°05'26" referenced to North American Datum of 1983, Ridgewood Village, Bergen County, NJ, Hydrologic Unit 02030103, on left bank 15 ft upstream from bridge on State Route 17 in Ridgewood and 2.8 mi upstream from Hohokus Brook.
DRAINAGE AREA.--21.6 mi2.
PERIOD OF RECORD.--Continuous-record discharge station, October 1954 to September 1974, and October 1977 to current year. Annual maximum gage, water years 1975 to 1977.
REVISED RECORDS.--WDR NJ-74:1971. WDR US-2011:2010(M). WDR US-2012:2010(P).
GAGE.--Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 71.74 ft above NGVD of 1929 (levels from New Jersey Geological Survey benchmark).
REMARKS.--Records fair, except for estimated daily discharges, which are poor. The flow past this station is affected by pumpage from wells.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,770 ft3/s, Aug 28, 2011, gage height, 11.42 ft; maximum gage height, 13.40 ft, Sep 16, 1999; minimum discharge, 0.00 ft3/s, Jul 27, 1999.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge, 6,800 ft3/s, July 23, 1945, on basis of slope-area measurement of peak flow at site 1.6 mi upstream, adjusted for change in drainage area.

Peak Flood Chart

Gage Photo

NEW: Flood Inundation Maps Now Available for this Gage.

National Weather Service flood stage for this gage is 5.0 ft.

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 1981-10-01  2018-11-19
00065 Gage height 2007-10-01  2018-11-19

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Instantaneous-data availability statement

Discharge, cubic feet per second

Most recent instantaneous value: 63.9 11-19-2018   06:30 EST
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Daily discharge, cubic feet per second -- statistics for Nov 19 based on 60 years of record more
Median Mean 75th
Most Recent
Value Nov 19
3.80 11 20 24 30 63.9 105

Gage height, feet

Most recent instantaneous value: 1.36 11-19-2018   06:30 EST
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