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|View History: Weekly Download Data (XLS File)                              
|View History: Weekly                                                        
|View History: Weekly                                                        
|View History:                                                               
|                                                                            
|Mountain Region Natural Gas Working Underground Storage (Billion Cubic Feet)
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|                                                                            
|Mountain Region Natural Gas Working Underground Storage (Billion Cubic Feet)
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|Year-Month                                                                                                                        | Week 1 | Week 2 | Week 3 | Week 4 | Week 5
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------
|
|2010-Jan                                                                                                                          | 01/01  | 195    | 01/08  | 185    | 01/15 
|2010-Feb                                                                                                                          | 02/05  | 157    | 02/12  | 148    | 02/19 
|2010-Mar                                                                                                                          | 03/05  | 129    | 03/12  | 127    | 03/19 
|2010-Apr                                                                                                                          | 04/02  | 126    | 04/09  | 126    | 04/16 
|2010-May                                                                                                                          | 05/07  | 142    | 05/14  | 147    | 05/21 
|2010-Jun                                                                                                                          | 06/04  | 165    | 06/11  | 168    | 06/18 
|2010-Jul                                                                                                                          | 07/02  | 182    | 07/09  | 188    | 07/16 
|2010-Aug                                                                                                                          | 08/06  | 199    | 08/13  | 202    | 08/20 
|2010-Sep                                                                                                                          | 09/03  | 212    | 09/10  | 221    | 09/17 
|2010-Oct                                                                                                                          | 10/01  | 230    | 10/08  | 232    | 10/15 
|2010-Nov                                                                                                                          | 11/05  | 236    | 11/12  | 236    | 11/19 
|2010-Dec                                                                                                                          | 12/03  | 222    | 12/10  | 216    | 12/17 
|                                                                                                                                 
|2011-Jan                                                                                                                          | 01/07  | 181    | 01/14  | 172    | 01/21 
|2011-Feb                                                                                                                          | 02/04  | 145    | 02/11  | 137    | 02/18 
|2011-Mar                                                                                                                          | 03/04  | 118    | 03/11  | 113    | 03/18 
|2011-Apr                                                                                                                          | 04/01  | 110    | 04/08  | 107    | 04/15 
|2011-May                                                                                                                          | 05/06  | 106    | 05/13  | 108    | 05/20 
|2011-Jun                                                                                                                          | 06/03  | 120    | 06/10  | 125    | 06/17 
|2011-Jul                                                                                                                          | 07/01  | 142    | 07/08  | 148    | 07/15 
|2011-Aug                                                                                                                          | 08/05  | 155    | 08/12  | 160    | 08/19 
|2011-Sep                                                                                                                          | 09/02  | 171    | 09/09  | 176    | 09/16 
|2011-Oct                                                                                                                          | 10/07  | 194    | 10/14  | 196    | 10/21 
|2011-Nov                                                                                                                          | 11/04  | 201    | 11/11  | 201    | 11/18 
|2011-Dec                                                                                                                          | 12/02  | 203    | 12/09  | 195    | 12/16 
|                                                                                                                                 
|2012-Jan                                                                                                                          | 01/06  | 180    | 01/13  | 174    | 01/20 
|2012-Feb                                                                                                                          | 02/03  | 157    | 02/10  | 152    | 02/17 
|2012-Mar                                                                                                                          | 03/02  | 137    | 03/09  | 133    | 03/16 
|2012-Apr                                                                                                                          | 04/06  | 137    | 04/13  | 139    | 04/20 
|2012-May                                                                                                                          | 05/04  | 144    | 05/11  | 146    | 05/18 
|2012-Jun                                                                                                                          | 06/01  | 155    | 06/08  | 159    | 06/15 
|2012-Jul                                                                                                                          | 07/06  | 174    | 07/13  | 178    | 07/20 
|2012-Aug                                                                                                                          | 08/03  | 187    | 08/10  | 189    | 08/17 
|2012-Sep                                                                                                                          | 09/07  | 204    | 09/14  | 209    | 09/21 
|2012-Oct                                                                                                                          | 10/05  | 220    | 10/12  | 221    | 10/19 
|2012-Nov                                                                                                                          | 11/02  | 230    | 11/09  | 231    | 11/16 
|2012-Dec                                                                                                                          | 12/07  | 228    | 12/14  | 222    | 12/21 
|                                                                                                                                 
|2013-Jan                                                                                                                          | 01/04  | 197    | 01/11  | 190    | 01/18 
|2013-Feb                                                                                                                          | 02/01  | 165    | 02/08  | 159    | 02/15 
|2013-Mar                                                                                                                          | 03/01  | 139    | 03/08  | 136    | 03/15 
|2013-Apr                                                                                                                          | 04/05  | 123    | 04/12  | 120    | 04/19 
|2013-May                                                                                                                          | 05/03  | 118    | 05/10  | 120    | 05/17 
|2013-Jun                                                                                                                          | 06/07  | 137    | 06/14  | 140    | 06/21 
|2013-Jul                                                                                                                          | 07/05  | 152    | 07/12  | 154    | 07/19 
|2013-Aug                                                                                                                          | 08/02  | 164    | 08/09  | 168    | 08/16 
|2013-Sep                                                                                                                          | 09/06  | 184    | 09/13  | 188    | 09/20 
|2013-Oct                                                                                                                          | 10/04  | 202    | 10/11  | 205    | 10/18 
|2013-Nov                                                                                                                          | 11/01  | 213    | 11/08  | 214    | 11/15 
|2013-Dec                                                                                                                          | 12/06  | 200    | 12/13  | 187    | 12/20 
|                                                                                                                                 
|2014-Jan                                                                                                                          | 01/03  | 169    | 01/10  | 159    | 01/17 
|2014-Feb                                                                                                                          | 02/07  | 124    | 02/14  | 115    | 02/21 
|2014-Mar                                                                                                                          | 03/07  | 94     | 03/14  | 91     | 03/21 
|2014-Apr                                                                                                                          | 04/04  | 82     | 04/11  | 81     | 04/18 
|2014-May                                                                                                                          | 05/02  | 83     | 05/09  | 86     | 05/16 
|2014-Jun                                                                                                                          | 06/06  | 104    | 06/13  | 109    | 06/20 
|2014-Jul                                                                                                                          | 07/04  | 127    | 07/11  | 131    | 07/18 
|2014-Aug                                                                                                                          | 08/01  | 145    | 08/08  | 149    | 08/15 
|2014-Sep                                                                                                                          | 09/05  | 164    | 09/12  | 169    | 09/19 
|2014-Oct                                                                                                                          | 10/03  | 176    | 10/10  | 181    | 10/17 
|2014-Nov                                                                                                                          | 11/07  | 191    | 11/14  | 184    | 11/21 
|2014-Dec                                                                                                                          | 12/05  | 173    | 12/12  | 170    | 12/19 
|                                                                                                                                 
|2015-Jan                                                                                                                          | 01/02  | 152    | 01/09  | 142    | 01/16 
|2015-Feb                                                                                                                          | 02/06  | 130    | 02/13  | 132    | 02/20 
|2015-Mar                                                                                                                          | 03/06  | 111    | 03/13  | 111    | 03/20 
|2015-Apr                                                                                                                          | 04/03  | 117    | 04/10  | 117    | 04/17 
|2015-May                                                                                                                          | 05/01  | 119    | 05/08  | 123    | 05/15 
|2015-Jun                                                                                                                          | 06/05  | 142    | 06/12  | 147    | 06/19 
|2015-Jul                                                                                                                          | 07/03  | 158    | 07/10  | 164    | 07/17 
|2015-Aug                                                                                                                          | 08/07  | 176    | 08/14  | 179    | 08/21 
|2015-Sep                                                                                                                          | 09/04  | 191    | 09/11  | 194    | 09/18 
|2015-Oct                                                                                                                          | 10/02  | 206    | 10/09  | 210    | 10/16 
|2015-Nov                                                                                                                          | 11/06  | 217    | 11/13  | 214    | 11/20 
|2015-Dec                                                                                                                          | 12/04  | 203    | 12/11  | 203    | 12/18 
|                                                                                                                                 
|2016-Jan                                                                                                                          | 01/01  | 185    | 01/08  | 177    | 01/15 
|2016-Feb                                                                                                                          | 02/05  | 151    | 02/12  | 147    | 02/19 
|2016-Mar                                                                                                                          | 03/04  | 146    | 03/11  | 147    | 03/18 
|2016-Apr                                                                                                                          | 04/01  | 149    | 04/08  | 150    | 04/15 
|2016-May                                                                                                                          | 05/06  | 161    | 05/13  | 166    | 05/20 
|2016-Jun                                                                                                                          | 06/03  | 183    | 06/10  | 188    | 06/17 
|2016-Jul                                                                                                                          | 07/01  | 202    | 07/08  | 208    | 07/15 
|2016-Aug                                                                                                                          | 08/05  | 215    | 08/12  | 217    | 08/19 
|2016-Sep                                                                                                                          | 09/02  | 224    | 09/09  | 227    | 09/16 
|2016-Oct                                                                                                                          | 10/07  | 240    | 10/14  | 243    | 10/21 
|2016-Nov                                                                                                                          | 11/04  | 253    | 11/11  | 257    | 11/18 
|2016-Dec                                                                                                                          | 12/02  | 256    | 12/09  | 244    | 12/16 
|                                                                                                                                 
|2017-Jan                                                                                                                          | 01/06  | 197    | 01/13  | 183    | 01/20 
|2017-Feb                                                                                                                          | 02/03  | 155    | 02/10  | 150    | 02/17 
|2017-Mar                                                                                                                          | 03/03  | 139    | 03/10  | 137    | 03/17 
|2017-Apr                                                                                                                          | 04/07  | 141    | 04/14  | 144    | 04/21 
|2017-May                                                                                                                          | 05/05  | 155    | 05/12  | 161    | 05/19 
|2017-Jun                                                                                                                          | 06/02  | 172    | 06/09  | 177    | 06/16 
|2017-Jul                                                                                                                          | 07/07  | 193    | 07/14  | 194    | 07/21 
|2017-Aug                                                                                                                          | 08/04  | 202    | 08/11  | 204    | 08/18 
|2017-Sep                                                                                                                          | 09/01  | 205    | 09/08  | 208    | 09/15 
|2017-Oct                                                                                                                          | 10/06  | 223    | 10/13  | 224    | 10/20 
|2017-Nov                                                                                                                          | 11/03  | 224    | 11/10  | 220    | 11/17 
|2017-Dec                                                                                                                          | 12/01  | 221    | 12/08  | 213    | 12/15 
|                                                                                                                                 
|2018-Jan                                                                                                                          | 01/05  | 167    | 01/12  | 158    | 01/19 
|2018-Feb                                                                                                                          | 02/02  | 131    | 02/09  | 122    | 02/16 
|2018-Mar                                                                                                                          | 03/02  | 97     | 03/09  | 93     | 03/16 
|2018-Apr                                                                                                                          | 04/06  | 83     | 04/13  | 83     | 04/20 
|2018-May                                                                                                                          | 05/04  | 92     | 05/11  | 98     | 05/18 
|2018-Jun                                                                                                                          | 06/01  | 121    | 06/08  | 125    | 06/15 
|2018-Jul                                                                                                                          | 07/06  | 143    | 07/13  | 144    | 07/20 
|2018-Aug                                                                                                                          | 08/03  | 148    | 08/10  | 151    | 08/17 
|2018-Sep                                                                                                                          | 09/07  | 166    | 09/14  | 170    | 09/21 
|2018-Oct                                                                                                                          | 10/05  | 180    | 10/12  | 177    | 10/19 
|2018-Nov                                                                                                                          | 11/02  | 182    | 11/09  | 181    | 11/16 
|2018-Dec                                                                                                                          | 12/07  | 160    | 12/14  | 153    | 12/21 
|                                                                                                                                 
|2019-Jan                                                                                                                          | 01/04  | 132    | 01/11  | 127    | 01/18 
|2019-Feb                                                                                                                          | 02/01  | 105    | 02/08  | 95     | 02/15 
|2019-Mar                                                                                                                          | 03/01  | 73     | 03/08  | 66     | 03/15 
|2019-Apr                                                                                                                          | 04/05  | 64     | 04/12  | 66     | 04/19 
|2019-May                                                                                                                          | 05/03  | 78     | 05/10  | 82     | 05/17 
|2019-Jun                                                                                                                          | 06/07  | 111    | 06/14  | 118    | 06/21 
|2019-Jul                                                                                                                          | 07/05  | 140    | 07/12  | 147    | 07/19 
|2019-Aug                                                                                                                          | 08/02  | 161    | 08/09  | 164    | 08/16 
|2019-Sep                                                                                                                          | 09/06  | 183    | 09/13  | 188    | 09/20 
|2019-Oct                                                                                                                          | 10/04  | 203    | 10/11  | 205    | 10/18 
|2019-Nov                                                                                                                          | 11/01  | 207    | 11/08  | 207    | 11/15 
|2019-Dec                                                                                                                          | 12/06  | 193    | 12/13  | 186    | 12/20 
|                                                                                                                                 
|2020-Jan                                                                                                                          | 01/03  | 166    | 01/10  | 161    | 01/17 
|2020-Feb                                                                                                                          | 02/07  | 126    | 02/14  | 117    | 02/21 
|2020-Mar                                                                                                                          | 03/06  | 97     | 03/13  | 96     | 03/20 
|2020-Apr                                                                                                                          | 04/03  | 92     | 04/10  | 95     | 04/17 
|2020-May                                                                                                                          | 05/01  | 111    | 05/08  | 117    | 05/15 
|2020-Jun                                                                                                                          | 06/05  | 148    | 06/12  | 156    | 06/19 
|2020-Jul                                                                                                                          | 07/03  | 180    | 07/10  | 186    | 07/17 
|2020-Aug                                                                                                                          | 08/07  | 206    | 08/14  | 209    | 08/21 
|2020-Sep                                                                                                                          | 09/04  | 216    | 09/11  | 221    | 09/18 
|2020-Oct                                                                                                                          | 10/02  | 236    | 10/09  | 241    | 10/16 
|2020-Nov                                                                                                                          | 11/06  | 243    | 11/13  | 241    | 11/20 
|2020-Dec                                                                                                                          | 12/04  | 232    | 12/11  | 223    | 12/18 
|                                                                                                                                 
|2021-Jan                                                                                                                          | 01/01  | 196    | 01/08  | 188    | 01/15 
|2021-Feb                                                                                                                          | 02/05  | 150    | 02/12  | 137    | 02/19 
|2021-Mar                                                                                                                          | 03/05  | 113    | 03/12  | 114    | 03/19 
|2021-Apr                                                                                                                          | 04/02  | 115    | 04/09  | 118    | 04/16 
|2021-May                                                                                                                          | 05/07  | 131    | 05/14  | 135    | 05/21 
|2021-Jun                                                                                                                          | 06/04  | 160    | 06/11  | 165    | 06/18 
|2021-Jul                                                                                                                          | 07/02  | 177    | 07/09  | 180    | 07/16 
|2021-Aug                                                                                                                          | 08/06  | 185    | 08/13  | 188    | 08/20 
|2021-Sep                                                                                                                          | 09/03  | 191    | 09/10  | 193    | 09/17 
|2021-Oct                                                                                                                          | 10/01  | 206    | 10/08  | 210    | 10/15 
|2021-Nov                                                                                                                          | 11/05  | 213    | 11/12  | 212    | 11/19 
|2021-Dec                                                                                                                          | 12/03  | 206    | 12/10  | 199    | 12/17 
|                                                                                                                                 
|2022-Jan                                                                                                                          | 01/07  | 159    | 01/14  | 151    | 01/21 
|2022-Feb                                                                                                                          | 02/04  | 121    | 02/11  | 114    | 02/18 
|2022-Mar                                                                                                                          | 03/04  | 93     | 03/11  | 87     | 03/18 
|2022-Apr                                                                                                                          | 04/01  | 91     | 04/08  | 90     | 04/15 
|2022-May                                                                                                                          | 05/06  | 96     | 05/13  | 103    | 05/20 
|2022-Jun                                                                                                                          | 06/03  | 118    | 06/10  | 122    | 06/17 
|2022-Jul                                                                                                                          | 07/01  | 138    | 07/08  | 143    | 07/15 
|2022-Aug                                                                                                                          | 08/05  | 148    | 08/12  | 151    | 08/19 
|2022-Sep                                                                                                                          | 09/02  | 159    | 09/09  | 163    | 09/16 
|2022-Oct                                                                                                                          | 10/07  | 190    | 10/14  | 195    | 10/21 
|2022-Nov                                                                                                                          | 11/04  | 208    | 11/11  | 208    | 11/18 
|2022-Dec                                                                                                                          | 12/02  | 193    | 12/09  | 186    | 12/16 
|                                                                                                                                 
|2023-Jan                                                                                                                          | 01/06  | 153    | 01/13  | 147    | 01/20 
|2023-Feb                                                                                                                          | 02/03  | 120    | 02/10  | 114    | 02/17 
|2023-Mar                                                                                                                          | 03/03  | 92     | 03/10  | 87     | 03/17 
|2023-Apr                                                                                                                          | 04/07  | 80     | 04/14  | 84     | 04/21 
|2023-May                                                                                                                          | 05/05  | 104    | 05/12  | 112    | 05/19 
|2023-Jun                                                                                                                          | 06/02  | 137    | 06/09  | 148    | 06/16 
|2023-Jul                                                                                                                          | 07/07  | 180    | 07/14  | 186    | 07/21 
|2023-Aug                                                                                                                          | 08/04  | 196    | 08/11  | 202    | 08/18 
|2023-Sep                                                                                                                          | 09/01  | 218    | 09/08  | 225    | 09/15 
|2023-Oct                                                                                                                          | 10/06  | 244    | 10/13  | 248    | 10/20 
|2023-Nov                                                                                                                          | 11/03  | 253    | 11/10  | 256    | 11/17 
|2023-Dec                                                                                                                          | 12/01  | 245    | 12/08  | 243    | 12/15 
|                                                                                                                                 
|2024-Jan                                                                                                                          | 01/05  | 220    | 01/12  | 208    | 01/19 
|2024-Feb                                                                                                                          | 02/02  | 183    | 02/09  | 178    | 02/16 
|2024-Mar                                                                                                                          | 03/01  | 169    | 03/08  | 167    | 03/15 
|2024-Apr                                                                                                                          | 04/05  | 165    | 04/12  | 167    | 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