U.S. Department of the Interior U.S. Geological Survey Ground-Water Availability in Part of the Borough of Carroll Valley, Adams County, Pennsylvania, and the Establishment of a Drought-Monitor Well Water-Resources Investigations Report 02-4273 Water-Resources Investigations Report 02-4273 In cooperation with the BOROUGH OF CARROLL VALLEY U.S. Department of the Interior U.S. Geological Survey Ground-Water Availability in Part of the Borough of Carroll Valley, Adams County, Pennsylvania, and the Establishment of a Drought-Monitor Well by Dennis J. Low and Randall W. Conger Water-Resources Investigations Report 02-4273 In cooperation with the BOROUGH OF CARROLL VALLEY New Cumberland, Pennsylvania 2002 U.S. DEPARTMENT OF THE INTERIOR GALE A. NORTON, Secretary U.S. GEOLOGICAL SURVEY Charles G. Groat, Director For additional information Copies of this report may be write to: purchased from: District Chief U.S. Geological Survey U.S. Geological Survey Branch of Information Services 215 Limekiln Road Box 25286 New Cumberland, Pennsylvania 17070-2424 Denver, Colorado 80225-0286 Email:
[email protected] Telephone: 1-888-ASK-USGS Internet address: http://pa.water.usgs.gov ii CONTENTS Page Abstract . 1 Introduction . 2 Purpose and scope . 2 Acknowledgments . 2 Previous work . 5 Description of study area. 5 Methods of investigation. 7 Ground-water availability . 8 Characteristics of a bedrock well . 9 Casing length . 11 Well depth . 11 Water-producing zones . 13 Discharge . 18 Yield. 18 Specific capacity . 20 Ground-water flow and recharge. 20 Water levels . 24 Bedrock water-budget . 31 Sources of possible anthropogenic recharge . 32 Establishment of a drought-monitor well.