St. Peter Sandstone, Illinois Basin (11)

Comments on Geologic Parameters

11 Flow Direction:

Mandle and Kontis (1992) and Young (1992a, b) provided the most comprehensive map of ground-water flow in the St. Peter-Prairie du Chien-Jordon aquifer in the region. Although their map does not explicitly cover south Illinois and western Kentucky, it clearly indicates that ground-water flow is downdip. Currently, ground-water flow in St. Peter Sandstone in the deepest portions of the basin is not well understood.

11 Map:

map

11 Reference:

Mandle, R. J., and Kontis, A. L., 1992, Simulation of regional ground-water flow in the Cambrian-Ordovician aquifer system in the northern Midwest, United States: U.S. Geological Survey, Professional Paper 1405-C.

Young, H. L., 1992a, Summary of ground water hydrology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States: U.S. Geological Survey, Professional Paper 1405-A, 55 p.

___________ 1992b, Hydrogeology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States: U.S. Geological Survey, Professional Paper 1405-B, 99 p.

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