From abstract: Geologic and aeromagnetic data show that a major tectonic unit underlies rocks of the Musconetcong nappe in the Great Valley of eastern Pennsylvania and New Jersey. This structure, the Lyon Station-Paulins Kill nappe, can be traced from Lyon Station, Pa., at least to Branchville, N.J., a distance of about 120 km. The nappe has a core of Precambrian crystalline rocks as shown by an aeromagnetic anomaly that has the same signature as the outcropping Precambrian rocks of the Musconetcong nappe. This core extends at least 70 km east from Lyon Station to Bangor, Pa., the eastern limit of the aeromagnetic survey. This report details the frontal structure of this system.

This report presents the water-quality data of Raystown Lake, Pennsylvania, discussing its physical, biological, and chemical properties. This report also includes several tables and figures.

This report presents the findings of a four month study designed to determine "the bacterial quality of the water in the Tulpehocken Creek basin." It includes maps and tables.

This report examines the effects of a highway construction project on suspended-sediment loads, concluding that the construction caused sixteen-thousand tons of sediment to be discharged and produced fifty percent of the total sediment discharge. It contains tables and graphs.

This report presents "a framework is presented for compiling available data for assessing statistical relationships between water quality and several factors of climate, physiography and land use" and includes several maps and graphs.