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<br />" CC0996 ~ <br /> <br />ENGBR <br />824.02(Purgatoire (Picket Wire) River, Colorado) <br />Subject: Purgatoire River, Colorado <br /> <br />6. The district engineer states that the most serious flood problem <br />area on Purgatoire River is in the city of Trinidad. The locally con- <br />structed floodway through Trinidad is inadequate to pass major floods. <br />Constructio~ of the authorized Federal flood-control project would provide <br />local protection against a flood somewhat greater than the maximum of re- <br />cord but would not protect the agricultural areas nor provide for storage <br />and re-regulation of flood waters for agricultural use. The distriot <br />engineer finds that llIIIall reservoirs on the tributaries are uneconomical <br />and that complete protection can be afforded only by control on the main <br />stem. Investigation shows that single-purpose reservoirs either for irri- <br />gation or flood control cannot be justified. The district engineer pre- <br />sents as the most suitable plan one providing for a dam and reservoir on <br />the main stem of Purgatoire River at mile 161. The total storage capacity <br />would be 140,700 acre-feet, of which 46,700 is allotted to flood control, <br />55,000 to conservation, and 39,000 to sediment control. He has coordi- <br />nated the irrigation aspects of the plan with the Bureau of Reclamation. <br />To obtain maximum beneficial use of the irrigation storage the Bureau of <br />Reclamation suggests five basic operating conditions as follows: <br /> <br />a. Transfer of the storage decree of the Model Land and Irri- <br />gation Company, for 20,000 acre-feet annually, from the present site to <br />the proposed Trinidad Reservoir. <br /> <br />b. Storage in Trinidad Reservoir of flood flows originating <br />on Purgatoire River above the dam site which would otherwise spill from <br />John Martin Reservoir. <br /> <br />c. Storage in Trinidad Reservoir of the winter flows of <br />Purgatoire River historically diverted for winter irrigation of project <br />lands. <br /> <br />~ D..........'''''.......'''''' ........ .,,'""'t'l..~DA 'QOCl6.I"t"n"I"I-t," ,..,-f' 1:l.1""m.:ll.,.. f"n'U~ 'hiAt.n"Pi_ -:-"> <br />