|                                                                           
|---------------------------------------------------------------------------
|                                                                           
|View History: Weekly Download Data (XLS File)                             
|View History: Weekly                                                       
|View History: Weekly                                                       
|View History:                                                              
|                                                                           
|Midwest Region Natural Gas Working Underground Storage (Billion Cubic Feet)
|                                                                           
|                                                                           
|Midwest Region Natural Gas Working Underground Storage (Billion Cubic Feet)
|                                                                           

|Year-Month                                                                                                                        | Week 1 | Week 2 | Week 3 | Week 4 | Week 5
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------
|
|2010-Jan                                                                                                                          | 01/01  | 900    | 01/08  | 820    | 01/15 
|2010-Feb                                                                                                                          | 02/05  | 604    | 02/12  | 552    | 02/19 
|2010-Mar                                                                                                                          | 03/05  | 433    | 03/12  | 422    | 03/19 
|2010-Apr                                                                                                                          | 04/02  | 410    | 04/09  | 429    | 04/16 
|2010-May                                                                                                                          | 05/07  | 506    | 05/14  | 520    | 05/21 
|2010-Jun                                                                                                                          | 06/04  | 593    | 06/11  | 619    | 06/18 
|2010-Jul                                                                                                                          | 07/02  | 691    | 07/09  | 715    | 07/16 
|2010-Aug                                                                                                                          | 08/06  | 788    | 08/13  | 808    | 08/20 
|2010-Sep                                                                                                                          | 09/03  | 886    | 09/10  | 919    | 09/17 
|2010-Oct                                                                                                                          | 10/01  | 1,011  | 10/08  | 1,039  | 10/15 
|2010-Nov                                                                                                                          | 11/05  | 1,124  | 11/12  | 1,126  | 11/19 
|2010-Dec                                                                                                                          | 12/03  | 1,071  | 12/10  | 1,017  | 12/17 
|                                                                                                                                 
|2011-Jan                                                                                                                          | 01/07  | 817    | 01/14  | 753    | 01/21 
|2011-Feb                                                                                                                          | 02/04  | 578    | 02/11  | 510    | 02/18 
|2011-Mar                                                                                                                          | 03/04  | 412    | 03/11  | 384    | 03/18 
|2011-Apr                                                                                                                          | 04/01  | 346    | 04/08  | 349    | 04/15 
|2011-May                                                                                                                          | 05/06  | 398    | 05/13  | 423    | 05/20 
|2011-Jun                                                                                                                          | 06/03  | 494    | 06/10  | 517    | 06/17 
|2011-Jul                                                                                                                          | 07/01  | 605    | 07/08  | 635    | 07/15 
|2011-Aug                                                                                                                          | 08/05  | 724    | 08/12  | 752    | 08/19 
|2011-Sep                                                                                                                          | 09/02  | 848    | 09/09  | 882    | 09/16 
|2011-Oct                                                                                                                          | 10/07  | 1,023  | 10/14  | 1,059  | 10/21 
|2011-Nov                                                                                                                          | 11/04  | 1,122  | 11/11  | 1,123  | 11/18 
|2011-Dec                                                                                                                          | 12/02  | 1,093  | 12/09  | 1,061  | 12/16 
|                                                                                                                                 
|2012-Jan                                                                                                                          | 01/06  | 923    | 01/13  | 890    | 01/20 
|2012-Feb                                                                                                                          | 02/03  | 745    | 02/10  | 702    | 02/17 
|2012-Mar                                                                                                                          | 03/02  | 589    | 03/09  | 558    | 03/16 
|2012-Apr                                                                                                                          | 04/06  | 564    | 04/13  | 569    | 04/20 
|2012-May                                                                                                                          | 05/04  | 607    | 05/11  | 628    | 05/18 
|2012-Jun                                                                                                                          | 06/01  | 689    | 06/08  | 709    | 06/15 
|2012-Jul                                                                                                                          | 07/06  | 775    | 07/13  | 789    | 07/20 
|2012-Aug                                                                                                                          | 08/03  | 839    | 08/10  | 858    | 08/17 
|2012-Sep                                                                                                                          | 09/07  | 964    | 09/14  | 991    | 09/21 
|2012-Oct                                                                                                                          | 10/05  | 1,067  | 10/12  | 1,081  | 10/19 
|2012-Nov                                                                                                                          | 11/02  | 1,124  | 11/09  | 1,118  | 11/16 
|2012-Dec                                                                                                                          | 12/07  | 1,062  | 12/14  | 1,029  | 12/21 
|                                                                                                                                 
|2013-Jan                                                                                                                          | 01/04  | 901    | 01/11  | 855    | 01/18 
|2013-Feb                                                                                                                          | 02/01  | 688    | 02/08  | 631    | 02/15 
|2013-Mar                                                                                                                          | 03/01  | 493    | 03/08  | 448    | 03/15 
|2013-Apr                                                                                                                          | 04/05  | 347    | 04/12  | 351    | 04/19 
|2013-May                                                                                                                          | 05/03  | 376    | 05/10  | 399    | 05/17 
|2013-Jun                                                                                                                          | 06/07  | 500    | 06/14  | 529    | 06/21 
|2013-Jul                                                                                                                          | 07/05  | 616    | 07/12  | 641    | 07/19 
|2013-Aug                                                                                                                          | 08/02  | 715    | 08/09  | 745    | 08/16 
|2013-Sep                                                                                                                          | 09/06  | 861    | 09/13  | 885    | 09/20 
|2013-Oct                                                                                                                          | 10/04  | 980    | 10/11  | 1,008  | 10/18 
|2013-Nov                                                                                                                          | 11/01  | 1,054  | 11/08  | 1,057  | 11/15 
|2013-Dec                                                                                                                          | 12/06  | 961    | 12/13  | 881    | 12/20 
|                                                                                                                                 
|2014-Jan                                                                                                                          | 01/03  | 721    | 01/10  | 638    | 01/17 
|2014-Feb                                                                                                                          | 02/07  | 390    | 02/14  | 323    | 02/21 
|2014-Mar                                                                                                                          | 03/07  | 194    | 03/14  | 176    | 03/21 
|2014-Apr                                                                                                                          | 04/04  | 133    | 04/11  | 137    | 04/18 
|2014-May                                                                                                                          | 05/02  | 177    | 05/09  | 210    | 05/16 
|2014-Jun                                                                                                                          | 06/06  | 345    | 06/13  | 383    | 06/20 
|2014-Jul                                                                                                                          | 07/04  | 490    | 07/11  | 528    | 07/18 
|2014-Aug                                                                                                                          | 08/01  | 627    | 08/08  | 662    | 08/15 
|2014-Sep                                                                                                                          | 09/05  | 809    | 09/12  | 843    | 09/19 
|2014-Oct                                                                                                                          | 10/03  | 948    | 10/10  | 973    | 10/17 
|2014-Nov                                                                                                                          | 11/07  | 1,057  | 11/14  | 1,050  | 11/21 
|2014-Dec                                                                                                                          | 12/05  | 951    | 12/12  | 923    | 12/19 
|                                                                                                                                 
|2015-Jan                                                                                                                          | 01/02  | 849    | 01/09  | 774    | 01/16 
|2015-Feb                                                                                                                          | 02/06  | 572    | 02/13  | 518    | 02/20 
|2015-Mar                                                                                                                          | 03/06  | 303    | 03/13  | 285    | 03/20 
|2015-Apr                                                                                                                          | 04/03  | 256    | 04/10  | 263    | 04/17 
|2015-May                                                                                                                          | 05/01  | 311    | 05/08  | 339    | 05/15 
|2015-Jun                                                                                                                          | 06/05  | 464    | 06/12  | 493    | 06/19 
|2015-Jul                                                                                                                          | 07/03  | 582    | 07/10  | 612    | 07/17 
|2015-Aug                                                                                                                          | 08/07  | 713    | 08/14  | 740    | 08/21 
|2015-Sep                                                                                                                          | 09/04  | 848    | 09/11  | 883    | 09/18 
|2015-Oct                                                                                                                          | 10/02  | 984    | 10/09  | 1,016  | 10/16 
|2015-Nov                                                                                                                          | 11/06  | 1,117  | 11/13  | 1,124  | 11/20 
|2015-Dec                                                                                                                          | 12/04  | 1,083  | 12/11  | 1,066  | 12/18 
|                                                                                                                                 
|2016-Jan                                                                                                                          | 01/01  | 983    | 01/08  | 942    | 01/15 
|2016-Feb                                                                                                                          | 02/05  | 739    | 02/12  | 689    | 02/19 
|2016-Mar                                                                                                                          | 03/04  | 587    | 03/11  | 577    | 03/18 
|2016-Apr                                                                                                                          | 04/01  | 548    | 04/08  | 538    | 04/15 
|2016-May                                                                                                                          | 05/06  | 582    | 05/13  | 606    | 05/20 
|2016-Jun                                                                                                                          | 06/03  | 679    | 06/10  | 703    | 06/17 
|2016-Jul                                                                                                                          | 07/01  | 764    | 07/08  | 785    | 07/15 
|2016-Aug                                                                                                                          | 08/05  | 845    | 08/12  | 861    | 08/19 
|2016-Sep                                                                                                                          | 09/02  | 928    | 09/09  | 954    | 09/16 
|2016-Oct                                                                                                                          | 10/07  | 1,071  | 10/14  | 1,093  | 10/21 
|2016-Nov                                                                                                                          | 11/04  | 1,148  | 11/11  | 1,155  | 11/18 
|2016-Dec                                                                                                                          | 12/02  | 1,112  | 12/09  | 1,071  | 12/16 
|                                                                                                                                 
|2017-Jan                                                                                                                          | 01/06  | 865    | 01/13  | 795    | 01/20 
|2017-Feb                                                                                                                          | 02/03  | 685    | 02/10  | 642    | 02/17 
|2017-Mar                                                                                                                          | 03/03  | 579    | 03/10  | 557    | 03/17 
|2017-Apr                                                                                                                          | 04/07  | 476    | 04/14  | 487    | 04/21 
|2017-May                                                                                                                          | 05/05  | 524    | 05/12  | 540    | 05/19 
|2017-Jun                                                                                                                          | 06/02  | 614    | 06/09  | 634    | 06/16 
|2017-Jul                                                                                                                          | 07/07  | 719    | 07/14  | 733    | 07/21 
|2017-Aug                                                                                                                          | 08/04  | 771    | 08/11  | 798    | 08/18 
|2017-Sep                                                                                                                          | 09/01  | 872    | 09/08  | 906    | 09/15 
|2017-Oct                                                                                                                          | 10/06  | 1,024  | 10/13  | 1,054  | 10/20 
|2017-Nov                                                                                                                          | 11/03  | 1,112  | 11/10  | 1,108  | 11/17 
|2017-Dec                                                                                                                          | 12/01  | 1,058  | 12/08  | 1,033  | 12/15 
|                                                                                                                                 
|2018-Jan                                                                                                                          | 01/05  | 778    | 01/12  | 717    | 01/19 
|2018-Feb                                                                                                                          | 02/02  | 543    | 02/09  | 468    | 02/16 
|2018-Mar                                                                                                                          | 03/02  | 380    | 03/09  | 350    | 03/16 
|2018-Apr                                                                                                                          | 04/06  | 246    | 04/13  | 228    | 04/20 
|2018-May                                                                                                                          | 05/04  | 240    | 05/11  | 267    | 05/18 
|2018-Jun                                                                                                                          | 06/01  | 341    | 06/08  | 372    | 06/15 
|2018-Jul                                                                                                                          | 07/06  | 477    | 07/13  | 501    | 07/20 
|2018-Aug                                                                                                                          | 08/03  | 580    | 08/10  | 604    | 08/17 
|2018-Sep                                                                                                                          | 09/07  | 734    | 09/14  | 770    | 09/21 
|2018-Oct                                                                                                                          | 10/05  | 871    | 10/12  | 908    | 10/19 
|2018-Nov                                                                                                                          | 11/02  | 980    | 11/09  | 991    | 11/16 
|2018-Dec                                                                                                                          | 12/07  | 885    | 12/14  | 841    | 12/21 
|                                                                                                                                 
|2019-Jan                                                                                                                          | 01/04  | 763    | 01/11  | 729    | 01/18 
|2019-Feb                                                                                                                          | 02/01  | 522    | 02/08  | 492    | 02/15 
|2019-Mar                                                                                                                          | 03/01  | 338    | 03/08  | 287    | 03/15 
|2019-Apr                                                                                                                          | 04/05  | 240    | 04/12  | 254    | 04/19 
|2019-May                                                                                                                          | 05/03  | 309    | 05/10  | 336    | 05/17 
|2019-Jun                                                                                                                          | 06/07  | 469    | 06/14  | 503    | 06/21 
|2019-Jul                                                                                                                          | 07/05  | 597    | 07/12  | 627    | 07/19 
|2019-Aug                                                                                                                          | 08/02  | 701    | 08/09  | 729    | 08/16 
|2019-Sep                                                                                                                          | 09/06  | 864    | 09/13  | 898    | 09/20 
|2019-Oct                                                                                                                          | 10/04  | 1,009  | 10/11  | 1,044  | 10/18 
|2019-Nov                                                                                                                          | 11/01  | 1,109  | 11/08  | 1,106  | 11/15 
|2019-Dec                                                                                                                          | 12/06  | 1,013  | 12/13  | 973    | 12/20 
|                                                                                                                                 
|2020-Jan                                                                                                                          | 01/03  | 885    | 01/10  | 851    | 01/17 
|2020-Feb                                                                                                                          | 02/07  | 694    | 02/14  | 639    | 02/21 
|2020-Mar                                                                                                                          | 03/06  | 529    | 03/13  | 512    | 03/20 
|2020-Apr                                                                                                                          | 04/03  | 475    | 04/10  | 487    | 04/17 
|2020-May                                                                                                                          | 05/01  | 530    | 05/08  | 554    | 05/15 
|2020-Jun                                                                                                                          | 06/05  | 662    | 06/12  | 688    | 06/19 
|2020-Jul                                                                                                                          | 07/03  | 761    | 07/10  | 780    | 07/17 
|2020-Aug                                                                                                                          | 08/07  | 856    | 08/14  | 880    | 08/21 
|2020-Sep                                                                                                                          | 09/04  | 953    | 09/11  | 983    | 09/18 
|2020-Oct                                                                                                                          | 10/02  | 1,062  | 10/09  | 1,081  | 10/16 
|2020-Nov                                                                                                                          | 11/06  | 1,127  | 11/13  | 1,139  | 11/20 
|2020-Dec                                                                                                                          | 12/04  | 1,095  | 12/11  | 1,059  | 12/18 
|                                                                                                                                 
|2021-Jan                                                                                                                          | 01/01  | 923    | 01/08  | 879    | 01/15 
|2021-Feb                                                                                                                          | 02/05  | 666    | 02/12  | 589    | 02/19 
|2021-Mar                                                                                                                          | 03/05  | 440    | 03/12  | 426    | 03/19 
|2021-Apr                                                                                                                          | 04/02  | 398    | 04/09  | 414    | 04/16 
|2021-May                                                                                                                          | 05/07  | 458    | 05/14  | 472    | 05/21 
|2021-Jun                                                                                                                          | 06/04  | 547    | 06/11  | 570    | 06/18 
|2021-Jul                                                                                                                          | 07/02  | 638    | 07/09  | 662    | 07/16 
|2021-Aug                                                                                                                          | 08/06  | 741    | 08/13  | 765    | 08/20 
|2021-Sep                                                                                                                          | 09/03  | 842    | 09/10  | 876    | 09/17 
|2021-Oct                                                                                                                          | 10/01  | 971    | 10/08  | 997    | 10/15 
|2021-Nov                                                                                                                          | 11/05  | 1,075  | 11/12  | 1,079  | 11/19 
|2021-Dec                                                                                                                          | 12/03  | 1,019  | 12/10  | 982    | 12/17 
|                                                                                                                                 
|2022-Jan                                                                                                                          | 01/07  | 835    | 01/14  | 770    | 01/21 
|2022-Feb                                                                                                                          | 02/04  | 552    | 02/11  | 496    | 02/18 
|2022-Mar                                                                                                                          | 03/04  | 364    | 03/11  | 337    | 03/18 
|2022-Apr                                                                                                                          | 04/01  | 296    | 04/08  | 293    | 04/15 
|2022-May                                                                                                                          | 05/06  | 342    | 05/13  | 364    | 05/20 
|2022-Jun                                                                                                                          | 06/03  | 454    | 06/10  | 482    | 06/17 
|2022-Jul                                                                                                                          | 07/01  | 562    | 07/08  | 586    | 07/15 
|2022-Aug                                                                                                                          | 08/05  | 663    | 08/12  | 684    | 08/19 
|2022-Sep                                                                                                                          | 09/02  | 776    | 09/09  | 809    | 09/16 
|2022-Oct                                                                                                                          | 10/07  | 952    | 10/14  | 987    | 10/21 
|2022-Nov                                                                                                                          | 11/04  | 1,068  | 11/11  | 1,084  | 11/18 
|2022-Dec                                                                                                                          | 12/02  | 1,028  | 12/09  | 1,002  | 12/16 
|                                                                                                                                 
|2023-Jan                                                                                                                          | 01/06  | 823    | 01/13  | 785    | 01/20 
|2023-Feb                                                                                                                          | 02/03  | 641    | 02/10  | 601    | 02/17 
|2023-Mar                                                                                                                          | 03/03  | 515    | 03/10  | 490    | 03/17 
|2023-Apr                                                                                                                          | 04/07  | 427    | 04/14  | 450    | 04/21 
|2023-May                                                                                                                          | 05/05  | 497    | 05/12  | 520    | 05/19 
|2023-Jun                                                                                                                          | 06/02  | 604    | 06/09  | 632    | 06/16 
|2023-Jul                                                                                                                          | 07/07  | 724    | 07/14  | 741    | 07/21 
|2023-Aug                                                                                                                          | 08/04  | 793    | 08/11  | 812    | 08/18 
|2023-Sep                                                                                                                          | 09/01  | 877    | 09/08  | 904    | 09/15 
|2023-Oct                                                                                                                          | 10/06  | 1,021  | 10/13  | 1,050  | 10/20 
|2023-Nov                                                                                                                          | 11/03  | 1,105  | 11/10  | 1,116  | 11/17 
|2023-Dec                                                                                                                          | 12/01  | 1,082  | 12/08  | 1,055  | 12/15 
|                                                                                                                                 
|2024-Jan                                                                                                                          | 01/05  | 924    | 01/12  | 873    | 01/19 
|2024-Feb                                                                                                                          | 02/02  | 689    | 02/09  | 662    | 02/16 
|2024-Mar                                                                                                                          | 03/01  | 575    | 03/08  | 561    | 03/15 
|2024-Apr                                                                                                                          | 04/05  | 512    | 04/12  | 528    | 04/19 
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
|                                                                                                                                 
|Release Date: 4/25/2024                                                                                                          
|Next Release Date: 5/2/2024