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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 - Change in Working Gas from Same Month Previous Year  (Million Cubic Feet)
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|Midwest Region Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Million Cubic Feet)
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|Year                                                                                                                              | Jan      | Feb      | Mar      | Apr      | May      | Jun      | Jul      | Aug      | Sep      | Oct      | Nov      | Dec     
|--------------------------------------------------------------------------------------------------------------------------------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | --------
|2013                                                                                                                              | -63,664  | -102,296 | -211,632 | -235,463 | -214,379 | -166,660 | -123,165 | -100,408 | -77,814  | -65,919  | -81,637  | -181,602
|2014                                                                                                                              | -243,074 | -255,871 | -209,941 | -189,692 | -156,914 | -124,375 | -83,035  | -47,387  | -33,755  | -8,053   | -11,988  | 108,104 
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|2015                                                                                                                              | 168,709  | 107,663  | 110,005  | 130,381  | 120,962  | 93,959   | 58,782   | 43,062   | 37,218   | 47,788   | 119,030  | 134,031 
|2016                                                                                                                              | 146,293  | 262,478  | 290,977  | 256,794  | 232,422  | 197,436  | 149,518  | 88,536   | 68,742   | 38,267   | 20,252   | -82,865 
|2017                                                                                                                              | -66,250  | -19,406  | -66,556  | -42,163  | -62,490  | -62,206  | -70,390  | -52,323  | -49,044  | -33,073  | -58,206  | -76,940 
|2018                                                                                                                              | -144,786 | -207,867 | -215,459 | -289,461 | -265,404 | -242,334 | -192,341 | -163,416 | -146,551 | -129,200 | -146,312 | -51,658 
|2019                                                                                                                              | -32,275  | -43,852  | -19,667  | 70,277   | 95,817   | 120,726  | 124,913  | 129,440  | 143,934  | 131,552  | 122,244  | 107,698 
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|2020                                                                                                                              | 195,718  | 204,059  | 229,523  | 218,122  | 201,316  | 167,639  | 130,870  | 100,472  | 62,521   | 10,258   | 77,832   | 32,705  
|2021                                                                                                                              | -24,701  | -87,612  | -76,105  | -85,296  | -108,844 | -117,448 | -107,015 | -107,245 | -86,927  | -37,839  | -84,832  | -30,916 
|2022                                                                                                                              | -117,428 | -81,176  | -99,125  | -107,785 | -87,422  | -72,527  | -71,778  | -60,441  | -49,129  | -21,921  | 7,565    | -55,289 
|2023                                                                                                                              | 85,197   | 145,940  | 120,567  | 154,825  | 150,911  | 143,615  | 131,638  | 103,587  | 76,256   | 45,884   | 47,870   | 119,172 
|2024                                                                                                                              | 29,333   | 53,923   | 90,673   | 93,529   | 90,334   |          |          |          |          |          |          |         
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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