Occurrence of Nitrate and Herbicides in Ground Water in the Upper Conestoga River Basin, Pennsylvania

Preimpoundment Hydrologic Conditions in the Swatara Creek (1981-84) and Estimated Postimpoundment Water Quality in and Downstream from the Planned Swatara State Park Reservoir, Lebanon and Schuylkill Counties, Pennsylvania

Preimpoundment Hydrologic Conditions in the Swatara Creek (1981-84) and Estimated Postimpoundment Water Quality in and Downstream from the Planned Swatara State Park Reservoir, Lebanon and Schuylkill Counties, Pennsylvania

Effects of Agricultural Best-management Practices on the Brush Run Creek Headwaters, Adams County, Pennsylvania, Prior to and During Nutrient Management

Results of a Preimpoundment Water-quality Study of Swatara Creek, Pennsylvania: Issues 85-4023

Hydrology and the Effects of Selected Agricultural Best-management Practices in the Bald Eagle Creek Watershed, York County, Pennsylvania, Prior to and During Nutrient Management: Water-Quality Study for the Chesapeake Bay Program

Effects of Storm Runoff on Water Quality in the Mill Creek Drainage Basin, Willingboro, New Jersey

Effects of Agricultural Best-management Practices on the Brush Run Creek Headwaters, Adams County, Pennsylvania, Prior to and During Nutrient Management

Effects of Storm Runoff on Water Quality in the Mill Creek Drainage Basin, Willingboro, New Jersey

Hydrology and the Hypothetical Effects of Reducing Nutrient Applications of Water Quality in the Bald Eagle Creek Headwaters, Southeastern Pennsylvania Prior to Implementation of Agricultural Best-management Practices