Water-Use Analysis Program for the Neshaminy Creek Basin, Bucks and Montgomery Counties, Pennsylvania U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 96–4127 Prepared in cooperation with the DELAWARE RIVER BASIN COMMISSION Water-Use Analysis Program for the Neshaminy Creek Basin, Bucks and Montgomery Counties, Pennsylvania By CURTIS L. SCHREFFLER U.S. GEOLOGICAL SURVEY Water-Resources Investigations Report 96–4127 Prepared in cooperation with the DELAWARE RIVER BASIN COMMISSION Lemoyne, Pennsylvania 1996 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey. For additional information write to: Copies of this report can be purchased from: District Chief U.S. Geological Survey U.S. Geological Survey Branch of Information Services 840 Market Street Box 25286 Lemoyne, Pennsylvania 17043-1586 Denver, CO 80225-0286 CONTENTS Abstract.................................................................................................................................................................................. 1 Introduction ........................................................................................................................................................................... 1 Purpose and Scope....................................................................................................................................................... 3 Acknowledgments ....................................................................................................................................................... 3 Study Methods....................................................................................................................................................................... 3 Data Collection............................................................................................................................................................ 3 Data Table Design........................................................................................................................................................ 3 Userfile Data Table ............................................................................................................................................ 4 Water-Use Data Table........................................................................................................................................ 4 Allocation Data Table........................................................................................................................................ 4 Subbasin Delineation................................................................................................................................................... 4 Determination of Ground-Water Contributions to Base Flow..................................................................................... 4 Water-Use Analysis Program................................................................................................................................................. 12 Program Structure........................................................................................................................................................ 12 Master Control Program .................................................................................................................................... 14 Procedure Library.............................................................................................................................................. 14 Water-Use Analysis Program............................................................................................................................. 14 Program Options.......................................................................................................................................................... 18 Input and Edit or Update Data........................................................................................................................... 18 Entering Data for a New Purveyor .......................................................................................................... 18 Editing and Updating Data for an Existing Purveyor..............................................................................19 Entering New Data for an Existing Purveyor .......................................................................................... 19 Data Retrieval Programs.................................................................................................................................... 20 Retrieve All Data for a Purveyor ............................................................................................................. 20 Retrieve All Data for a Basin or Subbasin............................................................................................... 20 Retrieve Data for GIS Coverage Creation ............................................................................................... 20 Annual Water-Use Calculation Program ........................................................................................................... 20 Limitations of Program................................................................................................................................................ 22 Summary................................................................................................................................................................................ 23 References Cited.................................................................................................................................................................... 24 Appendix 1. Master Control Program .................................................................................................................................. 27 Appendix 2. Procedure Library ............................................................................................................................................ 37 Appendix 3. Watershed Water-Use Analysis Program......................................................................................................... 65 Appendix 4. Water-Use Analysis Report for Little Neshaminy Creek, Warminster Subbasin ............................................ 78 FIGURES 1–5. Maps showing: 1. Location of the Neshaminy Creek Basin, Pennsylvania .................................................................................... 2 2. Neshaminy Creek Basin and subbasin locations, names, and U.S. Geological Survey assigned basin codes .......................................................................................................................................... 7 3. Generalized geology of the Neshaminy Creek Basin, Pennsylvania ................................................................. 9 4. Political boundaries in the Neshaminy Creek Basin, Pennsylvania................................................................... 10 5. Location of drainage basins and the four streamflow-measurement stations used in determining base-flow contributions, southeastern Pennsylvania.......................................................................................... 11 6. Flowchart of the water-use analysis program ............................................................................................................. 15 CONTENTS III TABLES 1. Description of fields in userfile data table............................................................................................................... 5 2. Description of codes for types of water use............................................................................................................ 5 3. Description of fields in water-use data table ........................................................................................................... 6 4. Description of fields in allocation data table........................................................................................................... 6 5. U.S. Geological Survey assigned codes, basin and subbasin names, and drainage areas....................................... 8 6. Base-flow recurrence intervals for geologic units or groups in the Neshaminy Creek Basin, Pennsylvania ........................................................................................................................................................... 12 7. Areal percentages of each geologic unit or group in each basin or subbasin of the Neshaminy Creek Basin, Pennsylvania................................................................................................................... 13 8. Base-flow recurrence intervals for Neshaminy Creek near Langhorne, Pennsylvania, streamflow-measurement station, water years 1935–93 ......................................................................................... 13 9. Areal percentages of townships and boroughs in West Branch Neshaminy Creek, Pine Run, North Branch Neshaminy Creek, Doylestown Subbasin Neshaminy Creek, Warwick Subbasin Neshaminy Creek, Warrington Subbasin Little Neshaminy Creek, and Park Creek Basins................................... 16 10. Areal percentages of townships and boroughs in Warminster Subbasin Little Neshaminy Creek, Mill Creek, Northampton Subbasin Neshaminy Creek, Newtown