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SUMMARY ARCHIVES

Summary of March 2014 Monthly Hydrologic Conditions

Compiled in cooperation with the New Jersey Department of Environmental Protection
Provisional assessment of hydrologic conditions in New Jersey

March 2014

Map of New Jersey showing sites where hydrologic conditions are reported.

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 3.65 inches, which is ­­­­87.32 percent of normal.  Atlantic City reported 5.00 inches, which is 118.76 percent of normal.  Trenton reported 3.33 inches, which is 80.43 percent of normal. Total precipitation over the past 12 months was: 44.97 inches at Newark, which is 1.28 inches below normal; 47.55 inches at Atlantic City, which is 5.80 inches above normal; and 47.03 inches at Trenton, which is 0.59 inches above normal.

Combined storage in the thirteen major water supply reservoirs as of March 31 was 71.990 billion gallons (89.0 percent of capacity), which is higher than the average March contents for the reference period 1961-1990.  The storage was 9.963 billion gallons more than one month ago and 6.001 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 the Great Egg Harbor River at Folsom and Delaware River at Trenton index stations and above the long-term monthly-mean at the South Branch Raritan River near High Bridge index station. The monthly-mean discharge at South Branch Raritan River near High Bridge was 200 ft3/s, 101.5 percent of the long-term mean.  The monthly-mean discharge of the Great Egg Harbor River at Folsom was 112 ft3/s, 94.1 percent of the long-term mean.  The monthly mean discharge of the Delaware River at Trenton was 13,400 ft3/s, 70.7 percent of the long-term mean. The observed daily mean discharge of the Delaware River at Trenton on March 31 was 43,700 ft3/s.

Groundwater levels, as measured in water-table observation wells for the month of March, were above normal at all three index wells. Levels increased 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 0.5 to 5.8 degrees Celsius. Dissolved oxygen ranged from 12.1 to 13.8 milligrams per liter. Specific conductance ranged from 188 to 276 microsiemens per centimeter at 25°C.

Note: The preceding data is preliminary and subject to revision.


All of the files listed below are in Portable Document Format (PDF) which can be viewed/printed with the Adobe Acrobat® Reader, freely available for most computer platforms.

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