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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 (Base Gas) (Million Cubic Feet)
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|Midwest Region Natural Gas in Underground Storage (Base Gas) (Million Cubic Feet)
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|Year                                                                                                                              | Jan       | Feb       | Mar       | Apr       | May       | Jun       | Jul       | Aug       | Sep       | Oct       | Nov       | Dec      
|--------------------------------------------------------------------------------------------------------------------------------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | --------- | ---------
|2013                                                                                                                              | 1,503,197 | 1,503,193 | 1,502,629 | 1,501,810 | 1,503,236 | 1,504,117 | 1,504,116 | 1,504,114 | 1,504,506 | 1,502,817 | 1,502,848 | 1,503,480
|2014                                                                                                                              | 1,505,645 | 1,504,979 | 1,497,798 | 1,502,556 | 1,498,128 | 1,498,610 | 1,498,610 | 1,498,610 | 1,498,887 | 1,496,791 | 1,496,848 | 1,497,021
|                                                                                                                                 
|2015                                                                                                                              | 1,497,256 | 1,496,957 | 1,496,400 | 1,495,858 | 1,495,743 | 1,496,917 | 1,496,915 | 1,489,324 | 1,490,195 | 1,488,404 | 1,488,432 | 1,488,593
|2016                                                                                                                              | 1,488,560 | 1,488,552 | 1,487,836 | 1,487,397 | 1,488,033 | 1,489,057 | 1,489,056 | 1,489,055 | 1,489,512 | 1,491,616 | 1,491,519 | 1,491,910
|2017                                                                                                                              | 1,491,050 | 1,491,049 | 1,491,350 | 1,490,622 | 1,491,038 | 1,491,775 | 1,491,774 | 1,491,759 | 1,492,240 | 1,492,505 | 1,492,582 | 1,497,913
|2018                                                                                                                              | 1,498,409 | 1,498,408 | 1,498,706 | 1,495,666 | 1,497,726 | 1,498,979 | 1,498,997 | 1,499,068 | 1,499,504 | 1,499,617 | 1,499,715 | 1,501,173
|2019                                                                                                                              | 1,501,161 | 1,501,157 | 1,498,647 | 1,499,934 | 1,500,618 | 1,501,700 | 1,501,697 | 1,502,795 | 1,504,393 | 1,505,171 | 1,505,220 | 1,505,244
|                                                                                                                                 
|2020                                                                                                                              | 1,505,242 | 1,505,240 | 1,505,049 | 1,504,476 | 1,504,463 | 1,505,735 | 1,505,721 | 1,505,731 | 1,506,172 | 1,506,443 | 1,506,711 | 1,507,166
|2021                                                                                                                              | 1,507,164 | 1,506,693 | 1,506,176 | 1,506,507 | 1,506,649 | 1,507,602 | 1,507,599 | 1,507,597 | 1,508,152 | 1,508,650 | 1,508,747 | 1,509,459
|2022                                                                                                                              | 1,509,457 | 1,508,372 | 1,506,522 | 1,511,118 | 1,511,692 | 1,513,319 | 1,513,317 | 1,513,315 | 1,513,853 | 1,514,079 | 1,514,127 | 1,514,512
|2023                                                                                                                              | 1,514,512 | 1,514,508 | 1,512,813 | 1,512,619 | 1,512,326 | 1,513,246 | 1,513,082 | 1,512,940 | 1,512,870 | 1,513,224 | 1,513,422 | 1,513,296
|2024                                                                                                                              | 1,512,859 | 1,512,854 | 1,512,551 | 1,511,883 | 1,512,412 |           |           |           |           |           |           |          
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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