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|View History: Monthly Download Data (XLS File)                             
|View History: Monthly                                                       
|View History: Monthly                                                       
|View History:                                                               
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|Colorado Natural Gas in Underground Storage (Base Gas)  (Million Cubic Feet)
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|Colorado 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   
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------
|1990                                                                                                                              | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 39,062 | 45,393
|1991                                                                                                                              | 45,258 | 45,263 | 45,263 | 45,252 | 45,252 | 45,252 | 45,252 | 45,252 | 45,252 | 45,252 | 45,252 | 45,252
|1992                                                                                                                              | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237 | 45,237
|1993                                                                                                                              | 45,210 | 45,210 | 45,210 | 45,210 | 45,210 | 45,210 | 45,210 | 45,210 | 45,210 | 47,757 | 49,049 | 49,049
|1994                                                                                                                              | 48,549 | 48,549 | 48,549 | 48,549 | 48,549 | 48,549 | 48,049 | 48,049 | 48,049 | 48,049 | 48,049 | 48,049
|                                                                                                                                 
|1995                                                                                                                              | 48,099 | 48,099 | 48,099 | 47,762 | 48,099 | 50,995 | 47,290 | 47,552 | 47,643 | 47,651 | 47,413 | 47,413
|1996                                                                                                                              | 47,413 | 47,413 | 47,413 | 47,598 | 47,461 | 47,781 | 47,781 | 47,781 | 47,902 | 47,902 | 47,902 | 47,902
|1997                                                                                                                              | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902 | 47,902
|1998                                                                                                                              | 47,413 | 48,140 | 48,140 | 48,140 | 48,140 | 48,140 | 48,140 | 48,140 | 48,140 | 48,140 | 48,139 | 48,139
|1999                                                                                                                              | 48,139 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229
|                                                                                                                                 
|2000                                                                                                                              | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,229 | 48,255 | 48,255 | 48,255 | 48,255 | 48,255
|2001                                                                                                                              | 48,255 | 48,255 | 48,255 | 48,255 | 48,255 | 48,255 | 48,255 | 48,255 | 48,255 | 47,655 | 47,655 | 47,655
|2002                                                                                                                              | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655 | 47,655
|2003                                                                                                                              | 47,655 | 47,655 | 47,655 | 47,641 | 47,630 | 47,601 | 47,574 | 47,551 | 47,528 | 47,505 | 47,495 | 47,476
|2004                                                                                                                              | 47,469 | 47,463 | 47,451 | 47,443 | 47,442 | 47,442 | 47,441 | 47,441 | 47,441 | 47,441 | 47,309 | 47,309
|                                                                                                                                 
|2005                                                                                                                              | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439 | 47,439
|2006                                                                                                                              | 47,430 | 47,426 | 47,426 | 47,426 | 47,426 | 47,426 | 47,426 | 47,426 | 47,435 | 47,435 | 44,566 | 44,536
|2007                                                                                                                              | 46,816 | 46,802 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773
|2008                                                                                                                              | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773
|2009                                                                                                                              | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 46,773 | 50,473 | 50,473 | 50,473 | 50,473 | 50,473 | 50,473
|                                                                                                                                 
|2010                                                                                                                              | 48,023 | 48,023 | 48,023 | 48,023 | 48,023 | 48,023 | 48,023 | 48,023 | 47,078 | 47,078 | 47,078 | 47,078
|2011                                                                                                                              | 47,078 | 47,078 | 47,578 | 47,463 | 47,578 | 47,578 | 47,578 | 47,578 | 47,578 | 47,578 | 47,578 | 47,578
|2012                                                                                                                              | 47,578 | 47,578 | 47,578 | 50,287 | 50,712 | 50,997 | 50,703 | 51,747 | 51,841 | 52,004 | 53,085 | 53,550
|2013                                                                                                                              | 54,243 | 54,527 | 54,557 | 54,557 | 54,557 | 54,557 | 54,557 | 54,557 | 54,557 | 54,557 | 54,557 | 54,557
|2014                                                                                                                              | 54,596 | 54,604 | 54,604 | 54,604 | 54,604 | 54,604 | 55,900 | 55,713 | 56,427 | 56,409 | 56,402 | 56,080
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|2015                                                                                                                              | 56,076 | 56,070 | 58,447 | 58,451 | 58,456 | 58,455 | 58,457 | 58,466 | 58,465 | 58,457 | 58,448 | 58,446
|2016                                                                                                                              | 58,435 | 58,428 | 58,429 | 58,436 | 58,440 | 58,446 | 58,456 | 58,455 | 58,456 | 58,448 | 58,436 | 58,604
|2017                                                                                                                              | 58,590 | 58,582 | 58,572 | 58,568 | 62,866 | 62,866 | 62,865 | 62,868 | 62,861 | 62,854 | 62,849 | 63,135
|2018                                                                                                                              | 63,117 | 63,108 | 63,099 | 63,095 | 60,395 | 60,390 | 60,382 | 60,377 | 60,370 | 60,364 | 60,357 | 60,338
|2019                                                                                                                              | 60,327 | 60,325 | 60,323 | 60,321 | 60,320 | 61,118 | 61,115 | 61,115 | 61,115 | 61,100 | 61,099 | 61,097
|                                                                                                                                 
|2020                                                                                                                              | 61,095 | 61,086 | 61,084 | 61,090 | 61,094 | 61,091 | 61,092 | 61,091 | 61,092 | 61,093 | 61,095 | 61,094
|2021                                                                                                                              | 61,093 | 61,085 | 61,090 | 61,097 | 61,102 | 61,108 | 61,111 | 61,113 | 61,113 | 61,114 | 61,117 | 61,117
|2022                                                                                                                              | 61,112 | 61,102 | 60,991 | 60,991 | 61,011 | 61,020 | 61,019 | 61,018 | 61,010 | 61,000 | 60,987 | 60,986
|2023                                                                                                                              | 60,977 | 60,961 | 60,948 | 60,974 | 60,984 | 60,985 | 60,994 | 60,994 | 60,989 | 60,974 | 60,977 | 60,979
|2024                                                                                                                              | 60,978 | 60,978 | 60,972 | 60,982 | 60,982 |        |        |        |        |        |        |       
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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