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LIST OF FIGURES (Continued) <br />Figure <br />Page <br />Al. Change in mean-monthly discharge in the Gunnison River near Grand <br />Junction during three time periods: early development (1914-1938), <br />middle development (1939-1965), and post-Aspinall development <br />(1966-1988). 56 <br />A2. Mean-monthly streamflow of the Gunnison River near Grand Junction, <br />Colorado before (upper, 1952-1965) and after Blue Mesa was <br />completed (lower, 1966-1983). Measured flow was recorded by the <br />U.S.G.S. stream gage at Whitewater. Undeveloped flow (streamflow <br />that would have occurred without any development in the Gunnison <br />River Basin) was estimated using a computer model (HDR <br />Engineering, Inc. 1989). 57 <br />A3. Frequency distribution of maximum-annual discharge (highest mean- <br />daily streamflow for the year) for three periods (early <br />development [1917-1938], middle development [1939-1965], and post- <br />Aspinall development [1966-1988] for the Gunnison River near Grand <br />Junction, Colorado. Streamflows were recorded at the USGS stream <br />gage at Whitewater, Colorado. 58 <br />A4. Frequency distribution of maximum-annual discharge (highest mean- <br />daily streamflow for the year) for three periods (early <br />development [1914-1938], middle development [1939-1965], and post- <br />Aspinall development [1966-1988] for the Colorado River at Cisco, <br />Utah. 59 <br />A5. Frequency distribution of the date of maximum-annual discharge for <br />the Colorado River (upper; Cisco gage) and the Gunnison River <br />(lower; Whitewater gage). The black bar equals the middle 50~ of <br />the distribution, the triangle equals the mean. 60 <br />vi <br />