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Summary of October 2003 Monthly Hydrologic Conditions

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

The following pages are adapted for online release from a summary of hydrologic condions for the previous month.

October 2003

Precipitation was above normal at all three index stations. Newark reported 3.72 inches, which is 117 percent of normal. Atlantic City reported 4.82 inches, which is 168 percent of normal. Trenton reported 5.66 inches, which is 216 percent of normal.

Combined storage in the thirteen major water supply reservoirs as of October 31 was 76.4 billion gallons, which is 95.1 percent of capacity. The storage was 2.89 billion gallons more than one month ago and 21.0 billion gallons more 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, Charlottesburg Reservoir, Echo Lake, Wanaque Reservoir and Spruce Run Reservoir.

Streamflow was above normal at all three index stations. The monthly-mean discharge at South Branch Raritan River near High Bridge was 203 ft³/s, 262 percent of normal. The monthly-mean discharge of the Great Egg Harbor River at Folsom was 74.1 ft³/s, 114 percent of normal. The observed monthly mean discharge of the Delaware River at Trenton was 21,520 ft³/s, 304 percent of normal. The observed daily mean discharge of the Delaware River at Trenton on October 31 was 75,300 ft³/s.

Groundwater levels, as measured in water-table observation wells, were above normal at all three index wells.

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.

• Combined Storage in the 13 Major Water Supply Reservoirs
• Monthly precipitation at three selected sites
• Groundwater levels in selected Water-table observation wells
• Streamflow at selected sites
• Water quality for the Delaware River at Trenton