|                                                                              
|------------------------------------------------------------------------------
|                                                                              
|View History: Annual Download Data (XLS File)                                
|View History: Annual                                                          
|View History: Annual                                                          
|View History:                                                                 
|                                                                              
|West Virginia Dry Natural Gas Reserves Revision Increases (Billion Cubic Feet)
|                                                                              
|                                                                              
|West Virginia Dry Natural Gas Reserves Revision Increases (Billion Cubic Feet)
|                                                                              

|Decade                                                                                                                            | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------
|1970's                                                                                                                            |        |        |        |        |        |        |        | 76     | 95     | 129   
|1980's                                                                                                                            | 205    | 131    | 183    | 172    | 284    | 497    | 340    | 137    | 243    | 147   
|1990's                                                                                                                            | 227    | 188    | 163    | 212    | 140    | 220    | 301    | 156    | 297    | 360   
|2000's                                                                                                                            | 668    | 315    | 445    | 182    | 664    | 646    | 298    | 310    | 390    | 383   
|2010's                                                                                                                            | 1,034  | 1,218  | 1,701  | 2,120  | 2,213  | 838    | 1,885  | 2,088  | 1,852  | 2,084 
|2020's                                                                                                                            | 1,309  | 2,204  |        |        |        |        |        |        |        |       
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
|                                                                                                                                 
|Release Date: 12/30/2022                                                                                                         
|Next Release Date: 12/29/2023