New Jersey Water Science Center
Summary of October 2013 Monthly Hydrologic Conditions
Compiled in cooperation with the New Jersey Department of Environmental Protection
Precipitation was below normal at the Newark and Trenton index stations, and above normal at the Atlantic City index station for the reference period 1981-2010. Newark reported 0.51 inches, which is 14.17 percent of normal. Atlantic City reported 4.91 inches, which is 143.57 percent of normal. Trenton reported 1.65 inches, which is 39.47 percent of normal. Total precipitation over the past 12 months was: 42.03 inches at Newark, which is 4.22 inches below normal; 46.00 inches at Atlantic City, which is 4.25 inches above normal; and 41.02 inches at Trenton, which is 5.42 inches below normal.
Combined storage in the thirteen major water supply reservoirs as of October 31 was 53.713 billion gallons (66.4 percent of capacity), which is higher than the average October contents for the reference period 1961-1990. The storage was 8.946 billion gallons less than one month ago and 7.831 billion gallons less than one year ago. The thirteen major water supply reservoirs are as follows: Lake Tappan, Woodcliff Lake, Oradell Reservoir, DeForest Lake, Splitrock Reservoir, Boonton Reservoir, Canistear Reservoir, Oak Ridge Reservoir, Clinton Reservoir, Charlotteburg Reservoir, Echo Lake, Wanaque Reservoir and Spruce Run Reservoir.
Streamflow was below the long-term monthly-mean for the reference period 1981-2010 at all three index stations. The monthly-mean discharge at South Branch Raritan River near High Bridge was 35.5 ft3/s, 40.5 percent of the long-term mean. The monthly-mean discharge of the Great Egg Harbor River at Folsom was 59.3 ft3/s, 99.3 percent of the long-term mean. The monthly mean discharge of the Delaware River at Trenton was 3,702 ft3/s, 43.7 percent of the long-term mean. The observed daily mean discharge of the Delaware River at Trenton on October 31 was 3,230 ft3/s.
Groundwater levels, as measured in water-table observation wells for the month of October, were below normal at the Readington School 11 and Morrell 1index wells, and above normal at the Vocational School 2 index well. Levels decreased from last month, and were higher than one year ago.
Water-quality parameters collected from the Delaware River at Trenton were within the range of historical monthly values. Water temperature ranged from 9.5 to 22.5 degrees Celsius. Dissolved oxygen ranged from 8.3 to 13.4 milligrams per liter. Specific conductance ranged from 213 to 273 microsiemens per centimeter at 25°C.
Note: The preceding data is preliminary and subject to revision.
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