|AGA Eastern Consuming Region
||All States east of the Mississippi River less Mississippi and Alabama,
plus Iowa, Nebraska and Missouri.
|AGA Western Consuming Region
||All States west of the Mississippi River less the Producing
Region and Iowa, Nebraska and Missouri.
|AGA Producing Region
||Alabama, Arkansas, Kansas, Louisiana, Mississippi, New Mexico, Oklahoma, and Texas.
|Base (cushion) Gas
||The volume of gas needed as a permanent inventory to maintain adequate reservoir
pressures and deliverability rates throughout the withdrawal season. All native gas is
included in the base gas volume.
||A gaseous mixture of hydrocarbon compounds, the primary one being methane.
||The amount by which storage withdrawals exceed storage injections.
||Volumes of gas injected or otherwise
added to underground natural gas reservoirs or liquefied natural
||Total volume of gas withdrawn from
underground storage or from liquefied natural gas storage
over a specified amount of time.
|Underground Storage Injections
||Gas from extraneous sources put into underground storage reservoirs.
|Underground Gas Storage
||The use of sub-surface
facilities for storing gas that has been transferred from its original
location. The facilities are usually hollowed-out salt
domes, natural geological reservoirs (depleted oil or gas
fields) or water-bearing sands topped by an impermeable cap
|Underground Storage Withdrawals
||Gas removed from underground
|Working (top storage) Gas
||The volume of total natural gas storage capacity that contains natural gas available for withdrawal.