Energy Information Administration (EIA) Storage Data
Natural gas stocks are an important indicator of natural gas
supply and demand conditions. Working gas in storage is one of
the few timely indicators of the relative scarcity or abundance
of gas in the market.
This chart represents storage levels starting with the injection
season on April 1 and the withdrawal season on November 1 each
year.
For current gas storage, visit:
http://ir.eia.gov/ngs/ngs.html