Evaluation of Agricultural Best-Management Practices in the Conestoga RiverHeadwaters, Pennsylvania: Hydrology of a Small Carbonate-Rock Site Near Ephrata, Pennsylvania, Prior to Implementation of Nutrient Management. Water Quality Study of the Conestoga

摘要

This report presents the results of a study of water quality and the associatedenvironmental conditions at Field-Site 2 from October 1, 1984, to September 30, 1986, prior to the implementation of nutrient management (pre-BMP). Surface-runoff and ground-water-quantity and -quality data, as well as climatological, agricultural-activity, soil, and hydrogeologic data, are summarized to characterize the site. Runoff represents discharge from 27 acres of pipe-drained terraces. Runoff quantity and mean concentrations and loads of nutrients in storm runoff are discussed. Ground-water levels and nutrient concentrations also are discussed. Temporal variation and correlations between water quantity and quality and selected environmental factors were examined by use of statistical techniques. In addition, these efforts will permit a future evaluation of what effect nutrient management may have had on surface-water and ground-water quality at Field-Site 2 after 2 years of BMP implementation.