Form 4
FORM 4 [ ]Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue.	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Files pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
1. Name and Address of Reporting Person John Chandler 1099 18th Street, Suite 1200 Denver, CO 80202 US	2. Issuer Name and Ticker or Trading Symbol Western Gas Resources, Inc. (WGR)		6. Relationship of Reporting Person(s) to Issuer Officer ________________________ EVP - Upstream & Marketing
	3. IRS or Social Security Number of Reporting Person (voluntary)	4. Statement for Month/Day/Year 4/23/2003	7. Individual or Joint/Group Filing  Form filed by One Reporting Person
		5. If Amendment, Date of Original (Month/Day/Yr) Original Date 12/10/2002

Table I-Non-Derivative Securities Acquired,Disposed of, or Beneficially Owned
1. Title of Security	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date if any (Month/Day/Year)	3. Transaction Code		4. Securities Acquired (A) or Disposed of (D)			5. Amount of Securities B eneficially Owned Following Reported Transaction(s)	6. Ownership Form: Direct (D) or Indirect (I)	7. Nature of Indirect Beneficial Ownership
			Code	V	Amount	(A) or (D)	Price

Table II-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1. Title of Derivative Security

2. Conversion or Exercise Price of Derivative Securi ty

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date if any (Month/Day/Year)

4. Transaction Code

5. Number of Derivative Securities Acquired (A) or Disposed of (D)

6. Date Exercisable and Ex-piration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities

8. Price of Derivative Security

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)

10. Ownership Form of Derivat ive Security: Direct(D)or Indirect (I)

11. Nature of Indirect Beneficial Ownership

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Call Options (Obligation to Sell) (1)

$35.00

12/06/2002

S

150

12/06/2002

04/19/2003

Common Stock

15,000

$321.00

-0-

Explanation of Responses
(1) Amendment to original Form 4 to correct Table II. Reporting Person sold 150 covered call options at a price of $321.00 per call option, constituting the obligation to sell 15,000 shares of common stock of Western Gas Resources, Inc. at $35.00 per share.
**Intentional misstatements or omissions of facts constiute Federal Criminal Violations. See 18 U.S.C. 1001 and 15U.S.C. 78ff(a). Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
	Signature of Reporting Person: /s/ John Walter	Date: 4/24/2003