Assessment of Surface/Ground Water System and NPS Impacts in a Buried Valley, St. Louisville, Licking County, Ohio. June 1993.


This Section 319 NPS study was initiated based on the results of the Heidelberg College private well testing program, demonstrating elevated nitrate levels, and the 1988 Non-Point Source Assessment. The setting was ideal for this type of study, as buried valleys provide one of the most important sources of ground water in the state of Ohio. Buried valleys typically have permeable soils, high recharge rates, and usually contain coarse outwash deposits. The highly sensitive nature of the deposits present in these valleys makes them extremely vulnerable to NPS contaminants.

The study area was selected because of the accessibility of the area, the amount of private well log data available, the mixture of land uses, and the presence of the "classic" buried valley setting. These factors combine to provide a useable model for other buried valleys in the state of Ohio and throughout glaciated terrain in the United States.

The approach used for the study was to define the buried valley, determine the nature and extent of the aquifer, quantify ground water/surface water interaction, characterize pathways of contaminant transport, identify existing water quality problems, suggest management measures and recommendations, and outline future studies.


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