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|View History: Monthly Download Data (XLS File)                                                                              
|View History: Monthly                                                                                                        
|View History: Monthly                                                                                                        
|View History:                                                                                                                
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|Mountain Producing Region Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Mountain Producing Region Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Percent)
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|Year                                                                                                                              | Jan    | Feb    | Mar    | Apr    | May    | Jun    | Jul    | Aug    | Sep    | Oct    | Nov    | Dec   
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------
|2015                                                                                                                              | -4.70  | 13.00  | 35.00  | 41.50  | 36.90  | 27.10  | 22.30  | 18.60  | 16.40  | 14.60  | 18.60  | 22.30 
|2016                                                                                                                              | 18.80  | 23.50  | 27.10  | 30.70  | 30.40  | 26.80  | 21.10  | 16.90  | 14.30  | 15.60  | 21.20  | 10.10 
|2017                                                                                                                              | 2.30   | -1.80  | -1.70  | -0.50  | -5.40  | -6.20  | -5.10  | -7.80  | -6.00  | -11.10 | -12.20 | -13.50
|2018                                                                                                                              | -15.20 | -28.30 | -38.60 | -39.60 | -28.10 | -23.90 | -25.00 | -18.90 | -17.90 | -17.00 | -23.90 | -20.00
|2019                                                                                                                              | -23.40 | -27.40 | -27.20 | -16.10 | -15.10 | -3.50  | 7.20   | 8.80   | 11.80  | 12.60  | 16.90  | 18.30 
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|2020                                                                                                                              | 30.50  | 35.90  | 45.00  | 43.20  | 40.80  | 31.00  | 26.10  | 20.70  | 17.30  | 16.10  | 20.40  | 16.60 
|2021                                                                                                                              | 14.70  | 15.80  | 23.50  | 13.10  | 8.00   | -1.10  | -7.80  | -11.30 | -12.70 | -10.90 | -13.50 | -12.20
|2022                                                                                                                              | -17.40 | -19.40 | -20.30 | -24.90 | -24.70 | -21.70 | -20.10 | -16.30 | -10.20 | -3.40  | -4.90  | -8.00 
|2023                                                                                                                              | -4.00  | 0.90   | -12.30 | 5.50   | 17.00  | 25.20  | 30.30  | 35.70  | 30.00  | 22.20  | 26.90  | 44.50 
|2024                                                                                                                              | 50.70  | 80.10  | 111.70 | 90.60  | 58.00  |        |        |        |        |        |        |       
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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