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L <br />LIST OF TABLES <br />Table Page <br />1. Mean maximum-annual discharge (average of the highest mean-daily <br />flow for the year) for the Gunnison and Colorado rivers for three <br />time periods: early development, middle development, and post- <br />Aspinall development. 21 <br />2. Comparison of streamflow changes in the Gunnison River estimated <br />using two techniques. 1. Comparison of actual streamflows with <br />. estimated flows that would have occurred without any water <br />development (1952-1965 and 1966-1983). 2. Comparison of actual <br />streamflows during three water development phases in the Gunnison <br />River: early development (1917-1938), middle development (1939- <br />1965), and post-Aspinall development (1966-1988). 21 <br />3. Percent decline of mean-monthly streamflow in the Gunnison and <br />Colorado rivers during spring runoff attributable to the Aspinall' <br />Unit. (Change from middle-development period to post-Aspinall <br />period.) 22 <br />A1. Estimated effect of the Aspinall Unit on mean bi-monthly water <br />temperature in the Gunnison River at River Miles 2 and 20. SNTEMP <br />calculated downstream temperatures using water temperature at the <br />Gunnison Tunnel. Water temperature at the tunnel before <br />construction of Aspinall was estimated by adding 6 °C to March, <br />April, May, and September temperatures and by adding 11 °C to <br />June,- July, and August temperatures. 48 <br />A2, Estimated effect of the Aspinall Unit on mean bi-monthly water <br />temperature in the Colorado River at River Miles 49 and 136. <br />SNTEMP calculated downstream temperatures using water temperature <br />at the Gunnison Tunnel. Water temperature at the tunnel before <br />construction of Aspinall was estimated by adding 6 °C to March, <br />April, May, and September temperatures and by adding'11 °C to <br />June, July, and August temperatures. 49 <br />A3. Annual streamflow and estimated annual suspended-sediment loads in <br />the Gunnison River near Grand Junction, 1950-1984. (Data <br />excerpted from Elliott and DeFeyter 1986) 50 <br />A4. Peak streamflow (CFS, highest annual mean-daily flow) for the <br />Colorado River at Cisco and the Gunnison River near Grand <br />Junction. Sl <br />A5. Mean-monthly streamflow for the Gunnison River near Grand Junction <br />for three periods: early development (1917-1938), middle <br />development (1939-1965), and post-Aspinall development (1966- <br />1988) . 52 <br />iii <br />