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 analysis.

 

SURFACE-WATER RECORDS
LOCATION.--Lat 39°59'35", long 74°46'53" referenced to North American Datum of 1983, Mount Holly Township, Burlington County, NJ, Hydrologic Unit 02040202, on right bank at Mill Dam in Iron Works and Mill Dam Park, 0.3 mi north of Saint Andrews Cemetery in Mount Holly, and 1.2 mi east of Clermont.
DRAINAGE AREA.--140 mi².
PERIOD OF RECORD.--Miscellaneous measurements, water years 1970, 1998-2013. Published as "at Pine Street" (station 01467006) 1998-99. Annual maximum gage, water year 2007. Continuous-record gage-height station, water years 2008 to current year.
GAGE.--Water-stage recorder with telemetry and crest-stage gages. Gage datum 0.00 ft above NAVD of 1988.
REMARKS.--Operation of gates in dam significantly affect water level during periods of high flow. Annual peak data can be obtained by selecting Peak streamflow from the 'Available data for this site' drop-down menu above or by using this link.
EXTREMES FOR PERIOD OF RECORD.--Maximum gage height, 14.38 ft, Aug 28, 2011.

WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1998 to current year. Published as "at Pine Street" (station 01467006) 1998-99.
REMARKS.--Discrete water-quality data were collected as part of the New Jersey Ambient Surface-Water-Quality Monitoring Network.

Peak Flood Chart

National Weather Service flood stage for this gage is 11.7 ft.