The Approximate Reservoir Extent (Reservoir Limit) (in acres) of a storage reservoir as reported in either IGS Special Report 01, Underground storage of natural gas in Indiana, 1963 or <IGS Special Report 59, Underground storage of natural gas in Indiana (revised), 1998> .
The Average Reservoir Extent is manually entered in the Gas Storage Field Summary.
Dawson, T. A. and G. S. Carpenter,1963, Underground storage of natural gas in Indiana: Indiana Geological Survey, Special Report 01, 29 p.
Keller, S. J., 1998, Underground storage of natural gas in Indiana: Indiana Geological Survey, Special Report 59, 77 p.