The Port Tobacco River Conservancy Surface-Water Monitoring and Study of Ground-Water Project was a three year initiative funded through a U.S. Environmental Protection Agency (EPA) Grant Agreement awarded in April 2007. EPA grant and matching funds supported the introduction of advanced techniques by the U.S. Geological Survey (USGS). This added another dimension to the surface-water data collected since 2003 by Port Tobacco River Conservancy (PTRC) volunteers in the river and streams throughout the 47 square mile Port Tobacco River watershed. Project funds also supported a new ground-water study conducted by USGS and PTRC water monitors of a 145 home, river-side development built in the 1950s in Port Tobacco, MD.