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Exhibit 11.1

WESTERN GAS RESOURCES, INC.

COMPUTATION OF PER SHARE EARNINGS

DECEMBER 31, 2003

		Weighted Average Shares Of Common Stock Outstanding	Net Income			Earnings Per Share Of Common Stock
Net income			$	84,219,000
Weighted average shares of common stock outstanding		33,206,114
Less preferred stock dividends:
	Special dividend on redemption of $2.625 cumulative convertible preferred stock			(45,420	)
	$2.625 cumulative convertible preferred stock			(6,795,651	)
		33,206,114	$	77,377,929
Basic earnings per share of common stock						$	2.33
Assume exercise of common stock equivalents (Anti-dilutive common stock equivalents are not used in this calculation)		4,141,096		6,841,071
		37,347,210	$	84,219,000
Fully diluted earnings per share of common stock						$	2.26

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WESTERN GAS RESOURCES, INC. COMPUTATION OF PER SHARE EARNINGS DECEMBER 31, 2003