EX-23.1 4 a2146958zex-23_1.htm EX 23.1
QuickLinks -- Click here to rapidly navigate through this document


Exhibit 23.1

        CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

        We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 033-54741, No. 33-66516, No. 333-00903, and No. 333-13099) and in the Registration Statements on Form S-8 (No. 333-29711, No. 333-95255, No. 333-95259, No. 333-75732, No. 333-98107, No. 333-103682 and No. 333-103684) of Western Gas Resources, Inc. of our report dated March 9, 2004, except for paragraph 2 of Note 2, as to which the date is September 29, 2004, relating to the financial statements, which appears in this Form 10-K/A.

/s/ PRICEWATERHOUSECOOPERS LLP

Denver, Colorado
November 19, 2004



QuickLinks