The Chester County observation-well network was established in 1973 through a cooperative agreement between the Chester County Water Resources Authority (CCWRA) and the U.S. Geological Survey. The network was established to monitor local ground-water levels, to determine drought conditions, and to monitor ground-water-level trends. Drought-warning and drought-emergency water-level triggers were determined for 20 of the 23 wells in the Chester County observation-well network. A statistical test to determine either rising or declining water-level trends was performed on data for all wells in the network. Water-level data from both of these wells showed a rising trend. A decrease in ground-water pumping in the area near these wells was probably the reason for the rise in water levels.
Additional publication details
USGS Numbered Series
Drought-trigger ground-water levels and analysis of historical water-level trends in Chester County, Pennsylvania
Water-Resources Investigations Report
U.S. Geological Survey
Pennsylvania Water Science Center
1 sheet :col. ill., col. map ;65 x 28 cm. folded to 22 x 28 cm. [PGS - 6 p.]