An assessment of the hydrologic impact resulting from development in regional growth areas in Hamilton Township, Atlantic County

This report delineates the findings and recommendations of a New Jersey Pinelands Commission study of the potential hydrologic effects of ground water supply development in several stream basins in Hamilton Township, Atlantic County, and in small adjacent portions of Galloway and Egg Harbor Townships. The study was carried out during the period 1988 to 1989. The study findings suggest that projected buildout of the Regional Growth Areas in Hamilton Township and portions of Galloway Township, where wastewater will be exported via sewers, cannot be supplied with water derived from the Kirkwood-Cohansey water table aquifer in the regions of the study basins without significantly depleting streamflows. The study also suggests that plans of the Hamilton Township Municipal utilities Authority (HTMUA) to export 5.825 million gallons per day (MGD) of wastewater via the Atlantic County utilities Authority Coastal Interceptor, will deplete streamflows in all of the study basins if Kirkwood-Cohansey ground water sources are used.Abstract 1 Introduction 2 Description of the Study Area 3 Definition of the Study Basins 3 Land Use Analysis of the Study Basins 6 Existinq unit Counts 7 Local Hydroqeoloqy 8 Water Supply and Sewaqe Treatment Counts 12 Hydrologic System 14 Hydroloqic Budqet, Existinq Conditions (1988) 14 Water Quality Assessment 17 Projected development and hydrologic impact analyses 23 Buildout Estimates 23 Hydroloqic Impact Analyses 26 Conclusions of the Analyses 33 Alternative Sources of Water supply 34 Appendices 37 A: Methods for Streamflow Estimation 37 B: Hydroloqic Budqet Methods and Assumptions 39 C: Assumptions of the Hydroloqic Impact Analyses 42 References