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Highlights of Selected Hydrologic Investigations in Pennsylvania
Studies of Microbiological Contaminants in surface and ground water in Pennsylvania
USGS Activities in the Chesapeake Bay Region
Stream Stability and Scour Assessment at Bridges in Pennsylvania
Coal-Mine-Drainage Projects in Pennsylvania
Hydrology of Fractured Rocks in Pennsylvania
Water Resource Studies in Chester County, Pennsylvania
Radionuclides in Ground Water in Southeastern Pennsylvania
National Water-Quality Assessment (NAWQA) Program:
Lower Susquehanna River Basin
Potomac River Basin
Allegheny and Monongahela River Basins
Delaware River Basin
Lake Erie - Lake St. Clair Drainage
This page was last modified 6-16-2000