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|View History: Monthly Download Data (XLS File)                         
|View History: Monthly                                                   
|View History: Monthly                                                   
|View History:                                                           
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|Iowa Natural Gas in Underground Storage (Base Gas)  (Million Cubic Feet)
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|Iowa 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                                                                                                                              | 153,933 | 153,933 | 153,933 | 153,933 | 153,920 | 153,919 | 153,917 | 153,917 | 153,916 | 153,916 | 153,916 | 153,916
|1991                                                                                                                              | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574
|1992                                                                                                                              | 154,574 | 154,574 | 154,574 | 154,161 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574 | 154,574
|1993                                                                                                                              | 200,700 | 199,929 | 199,482 | 200,679 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700
|1994                                                                                                                              | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700
|                                                                                                                                 
|1995                                                                                                                              | 200,700 | 200,700 | 200,564 | 200,475 | 200,663 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700
|1996                                                                                                                              | 200,556 | 200,460 | 199,971 | 198,763 | 200,024 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700
|1997                                                                                                                              | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700
|1998                                                                                                                              | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700 | 241,100 | 200,700 | 200,700 | 200,700 | 200,700 | 200,700
|1999                                                                                                                              | 200,700 | 200,700 | 200,300 | 200,300 | 200,300 | 200,300 | 200,300 | 200,300 | 200,300 | 200,700 | 200,700 | 200,700
|                                                                                                                                 
|2000                                                                                                                              | 200,700 | 200,700 | 196,700 | 196,700 | 196,700 | 196,700 | 196,700 | 196,700 | 196,700 | 196,700 | 196,700 | 198,700
|2001                                                                                                                              | 198,700 | 196,198 | 194,215 | 197,715 | 197,715 | 197,715 | 197,715 | 197,715 | 197,715 | 197,715 | 197,715 | 197,715
|2002                                                                                                                              | 197,715 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750 | 201,750
|2003                                                                                                                              | 201,750 | 201,750 | 199,550 | 199,550 | 199,550 | 199,550 | 199,550 | 199,550 | 199,550 | 199,550 | 199,550 | 199,550
|2004                                                                                                                              | 199,550 | 199,550 | 199,550 | 199,486 | 199,286 | 199,286 | 199,286 | 199,286 | 199,286 | 199,286 | 197,986 | 197,986
|                                                                                                                                 
|2005                                                                                                                              | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986 | 197,986
|2006                                                                                                                              | 197,986 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046
|2007                                                                                                                              | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046 | 198,046
|2008                                                                                                                              | 198,046 | 198,046 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846
|2009                                                                                                                              | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846 | 196,846
|                                                                                                                                 
|2010                                                                                                                              | 196,846 | 196,846 | 196,947 | 196,947 | 197,022 | 197,097 | 197,172 | 197,247 | 197,322 | 197,397 | 197,397 | 197,397
|2011                                                                                                                              | 197,397 | 197,397 | 197,397 | 197,397 | 197,397 | 197,397 | 197,397 | 197,397 | 197,397 | 197,097 | 197,097 | 197,097
|2012                                                                                                                              | 197,097 | 197,097 | 197,097 | 197,363 | 197,630 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897
|2013                                                                                                                              | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897
|2014                                                                                                                              | 197,897 | 197,897 | 197,897 | 197,823 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897
|                                                                                                                                 
|2015                                                                                                                              | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897
|2016                                                                                                                              | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897
|2017                                                                                                                              | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897
|2018                                                                                                                              | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,897 | 197,881 | 197,881 | 197,881
|2019                                                                                                                              | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881
|                                                                                                                                 
|2020                                                                                                                              | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881
|2021                                                                                                                              | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881
|2022                                                                                                                              | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881
|2023                                                                                                                              | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 | 197,881
|2024                                                                                                                              | 197,881 | 197,881 | 197,881 | 197,881 | 197,881 |         |         |         |         |         |         |        
|                                                                                                                                 
|- = 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