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<br />. <br /> <br />. <br /> <br />. <br /> <br />070\', <br /> <br />probable that the deposited sediments in a reservoir upstream from <br /> <br />the Trinidad statiO!: ,rill have a greater 'density than that used in <br /> <br />general for the Arkansas River Basin. <br /> <br />48. ~ent retained in Trinidad Reservoir. - The total <br /> <br />eetimated sediment at the Trinidad Reservoir was obtained by reduc- <br /> <br />ing the computed suspended sediment load at Trinidad in proportion to <br /> <br />the drainage area and considering the bedload and other factors as <br /> <br />stated above, the suspended sediment load was increased by'lO percent <br /> <br />to obtain an average annual volume of approximately 620 acre-feet per <br /> <br />year. Assuming about 25 acre~feet per year of the coarser sediments <br /> <br />will be deposited in the backwater area above the reservoir and <br /> <br />estimating about 75 acre-feet per year will be sluiced thro~gh the <br /> <br />reservoir leaves about 520 acre-feet of sediment to De retained in <br /> <br />the Trinidad Reservoir. On a 75 -year bas is this amounts to a <br /> <br />storage depletion of 39,000 acre-feet. <br /> <br />TABLE IS <br /> <br />,;USPLNDED SEDIME;;T AT THINIDAD <br />FURGATOIPJ: (PICKET WritE) HIVER, COLORADO <br /> <br />Water Year <br />-10ct 1 to Sep 30) <br />1940 <br />1941 <br />1942 <br />1943 <br />1944 <br />1945 <br />1946 <br />1947 <br />1948 <br />1949 <br /> <br />Sediment in <br />Thousand Tons <br /> <br />:" - Sediment in <br />Acre-feet <br /> <br />145 <br /> <br />85 <br />606 <br />5,1.13 <br />110 <br /> <br />999 <br /> <br />8,925 <br /> <br />181 <br /> <br />425 <br />443 <br />149 <br /> <br />228 <br /> <br />701 <br />730 <br />21.5 <br />376 <br />683 <br /> <br />414 <br /> <br />404 <br /> <br />245 <br /> <br />37 <br /> <br />APPEl'1Drx B <br /> <br />,., ,~ <br /> <br />. <br /> <br />