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f j :1-~ 00 OC22 " ~ . j j .' f 1 ., 1 Investigation of River Administration August 3-4-5. 1941 The Colo. Canal started a Heredith exohange at 6.All 7/29. The original intent \'/as.t6 start the exohlmge simultaneously with the arri..ro.l of 75 s.f. of reservoir water from Twin. Lakes. Through a misunderstanding the reservoir water. 83.5 s.f.. was turned out at Twin Lakes at 12N 7/28 instead of 9.A1I 7/27. As originall,Y planned the diversi on of the Colo. Canal beginning at 6AM 7/29. was.to consist of 175 s.f. of lleredith exchange water and 75 s. f. of Twin Lakes mter. Tlll error was dis- covered before time to turn the Colo. Canal in and the entire head. 250 s.f.. turned in. Vill.s Meredith water and 239 s.f. ms turned out of Lake tieredith at 12M 7/29 to oompeusate for the 250 s.f. of river water being diverted by tlll Colo. Canal from the river at Boone. The 75 s.f. from Twin. Lakes arrived at the Colo. Canal ooad- gate at l2H 7/30. at whioh time this reservoir head of 75 s. f. replaoed 75 s.f. of too exchs.n.ge water. This left 175 s.f. of exohange water in the co.nal. Too outflow from Lake Meredith was cut to 169 s.f. at 6PM 7/31. Too exchs.n.ge betV<<len lake Meredith and the river was oontinue d on this basis until 7PM 7/31. at which time the exohange between Lake Meredith and the river was inoreased by 100 s.f.. making a total of 275 s.f. of Heredith water and 75 s.f. of Twin Lakes water being diverted by too Colo. Canal. At 6PM 8/2 Twin Lams turned out an additional 100 s.f. for the Colo. Canal. It was anticipated that the river would soon reach a stage which would make it impossible to continue an ex- change of 275 s.f. with Lake Heredith. and this 100 s.f. from Twin Lakes was turned out to replaoe 100 s.f. of this exohange Vill.ter. However, the river dropped so rapidly in 8/2 and 8/3. that this head of 100 s.f. had not reached the Colo. Canal before it was necessary to deorease the amount of the Heredith exohange.