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                                                                    EXHIBIT 21.1

                  SUBSIDIARIES OF WESTERN GAS RESOURCES, INC.


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NAME OF SUBSIDIARY                                RELATIONSHIP
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<S>                                               <C> 
1)  MIGC, Inc.                                    Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
2)  MGTC, Inc.                                    Wholly-owned subsidiary of MIGC, Inc.                  
                                                                                                         
3)  Western Gas Resources - Texas, Inc.           Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
4)  Western Gas Resources Storage, Inc.           Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
5)  Western Gas Resources - Oklahoma, Inc.        Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
6)  Mountain Gas Resources, Inc.                  Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
7)  Western Power Services, Inc.                  Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
8)  Pinnacle Gas Treating, Inc.                   Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
9)  WGR Canada, Inc.                              Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
10) Lance Oil & Gas Company, Inc.                 Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
11) Mountain Gas Transportation, Inc.             Wholly-owned subsidiary of Mountain Gas Resources, Inc.
                                                                                                         
12) Western Gas Wyoming, L.L.C.                   Wholly-owned subsidiary of Western Gas Resources, Inc. 
                                                                                                         
13) Green River Gathering Company                 A joint venture between Western Gas Resources, Inc.    
                                                  and Mountain Gas Resources, Inc.    
                                                                                                         
14) Westana Gathering Company                     A general partnership with Western Gas Resources, Inc., 
                                                  as general partner
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