New Jersey water withdrawals, uses, transfers, and discharges by HUC11, 1990 to 1999: User's guide

This New Jersey Geological Survey (NJGS) report summarizes data on water withdrawal, use, transfer and discharge in New Jersey from 1990 through 1999 for all of New Jersey's 151 11- Digit Hydrologic Unit Code (HUC11) drainage basins. The HUC11 delineations were developed by the United States Geological Survey (USGS) and modified by the New Jersey Department of Environmental Protection (NJDEP) to meet its Geographic Information Systems (GIS) mapping requirements. The NJDEPs HUC11s range in size from 3 to 349 square miles, and average about 60 square miles. HUC11s are aggregated together to form 20 Watershed Management Areas (WMA) and these are further aggregated to form 5 Water Regions (WR) (Figure 1). Withdrawals are defined as the volume of fresh water withdrawn from ground-water or surface-water sources. Withdrawals include sources regulated under the Water Supply Management Act (N.J.S.A. 58:2- 1 et seq.), and estimates of those from private domestic wells and small, public non-community water systems. Use is defined as the volume of water actually used in the HUC11, after accounting for transfers. Use is categorized into one of eight use groups: agricultural, commercial, industrial, non-agricultural irrigation, mining, potable supply, power generation and not classified. Transfers consist of water moved between HUC11s and include fresh water (e.g. bulk transfers of potable water) and sewage (e.g. via sewer collection pipes). Discharge points and reported discharge volumes are also include