Alabama and Mississippi
Comments on Geologic Parameters
11 Flow Direction:
Maps of the Upper Pottsville potentiometric surface between 400 and 10,000 ft by Pashin and others (1991) were used in the GIS because they provide the only flow direction information found for the Pottsville Formation.
Pashin, J. C., and others, 1991, Structure, sedimentology, coal quality and hydrology of the Black Warrior Basin in Alabama: controls on the occurrence and producibility of coal methane: The University of Texas at Austin and Geological Survey of Alabama, Bureau of Economic Geology, GRI Contract Number 1544, 187 p.