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|View History: Monthly Download Data (XLS File)                                      
|View History: Monthly                                                                
|View History: Monthly                                                                
|View History:                                                                        
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|Midwest Region Natural Gas in Underground Storage (Working Gas)  (Million Cubic Feet)
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|Midwest Region Natural Gas in Underground Storage (Working Gas)  (Million Cubic Feet)
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|Year                                                                                                                              | Jan     | Feb     | Mar     | Apr     | May     | Jun     | Jul     | Aug     | Sep       | Oct       | Nov       | Dec    
|--------------------------------------------------------------------------------------------------------------------------------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | ------- | --------- | --------- | --------- | -------
|2013                                                                                                                              | 692,747 | 493,870 | 352,454 | 369,030 | 474,815 | 596,140 | 708,799 | 836,317 | 969,576   | 1,055,661 | 984,792   | 746,441
|2014                                                                                                                              | 449,673 | 237,999 | 142,513 | 179,338 | 317,901 | 471,765 | 625,764 | 788,930 | 935,822   | 1,047,609 | 972,803   | 854,545
|                                                                                                                                 
|2015                                                                                                                              | 618,383 | 345,662 | 252,518 | 309,719 | 438,863 | 565,724 | 684,546 | 831,992 | 973,040   | 1,095,397 | 1,091,834 | 988,576
|2016                                                                                                                              | 764,675 | 608,139 | 543,495 | 566,513 | 671,284 | 763,161 | 834,064 | 920,528 | 1,041,781 | 1,133,663 | 1,112,086 | 905,711
|2017                                                                                                                              | 698,425 | 588,734 | 476,939 | 524,350 | 608,794 | 700,955 | 763,673 | 868,205 | 992,738   | 1,100,590 | 1,053,879 | 828,771
|2018                                                                                                                              | 553,640 | 380,867 | 261,480 | 234,889 | 343,391 | 458,621 | 571,332 | 704,789 | 846,187   | 971,391   | 907,567   | 777,113
|2019                                                                                                                              | 521,364 | 337,015 | 241,813 | 305,166 | 439,208 | 579,347 | 696,246 | 834,229 | 990,121   | 1,102,942 | 1,029,811 | 884,811
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|2020                                                                                                                              | 717,082 | 541,075 | 471,336 | 523,288 | 640,524 | 746,986 | 827,116 | 934,701 | 1,052,642 | 1,113,200 | 1,107,643 | 917,516
|2021                                                                                                                              | 692,381 | 453,463 | 395,231 | 437,993 | 531,680 | 629,538 | 720,101 | 827,456 | 965,715   | 1,075,361 | 1,022,811 | 886,600
|2022                                                                                                                              | 574,953 | 372,287 | 296,106 | 330,208 | 444,258 | 557,011 | 648,323 | 767,014 | 916,587   | 1,053,441 | 1,030,375 | 831,311
|2023                                                                                                                              | 660,150 | 518,227 | 416,673 | 485,033 | 595,169 | 700,626 | 779,961 | 870,601 | 992,843   | 1,099,324 | 1,078,245 | 950,482
|2024                                                                                                                              | 689,483 | 572,150 | 507,346 | 578,562 | 685,504 |         |         |         |           |           |           |        
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|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024