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<br />:-< 0051 <br /> <br />Arkansas Diversion Dam <br /> <br />The Arkansas Divorsion Dam would be constructed across the Arkansas <br />River immediately downstroam from the existing bridge on State Highway 89 <br />about 1 mile south of Holly, Golorado. 'l'he dam would consist of a con" <br />crete overflow section 470 feot in length. The.crest elevation of the <br />overflow section would be at an elevation of 3,380 feet, two feet above <br />the existing stream bed. A radial gate controlled canal inlet structure <br />would be constructed at the south end of the diverSion dam yd:th a capaCity <br />of about 200 second-feet. The estimated cost ot the diversion dam and <br />inlet structure would be about ~~406,000 based on July 1953 prices. <br /> <br />Diversion Canal <br /> <br />The diversion OOllal with a capacity of 200 second-feet would trans" <br />port the diverted water from the diversion dam dlong a ccurse south of <br />and parallel to the drkansas River to the potential Granada Reservoirc <br />The canal .vould be constructed ~~th a compacted earth lining and yrould <br />have a length of about l2,000 feet. The estimated cost of the Granada <br />Canal would be ~122,000 based on July 1953 prices~ <br /> <br />Granada Reservoir <br /> <br />The Granada Reservoir would be located about 3.5 miles southeast of <br />Holly, Oolorado en the south side of the Arkansas River. The reservoir <br />With a capacity of about 301000 acre-feet yrould inundate 2,200 aores and <br />muld extend about 2 milos west. of the state line into Oolorado and about <br />l.5 miles east of the state line into Kansas. The normal water surface <br />elevation at capacity 30,000 acre-feet would be 3,377 feet. A permanent <br />fish and Ydldlife conservation pool of about 3,000 acre-feet, covering <br />about.600 acres, would be maintained at a water surface elevation of <br />3,356. The reservoir .vould be formod by the construction of about <br />33,700 linear feot of earth-fill dikes. The main dikes paralleling the <br />river bank would. have a maximum height of 38 feet and would extend for <br />a distance of 19,200 feet. Transverse dikes at the east and west ends <br />of the main dikes would extend from the main dike to the high ground <br />on the south side of the river. The outlGt works with a capacity of 500 <br />second-feot would consist of two 6' x 10\ concreto conduits located at <br />the east end of the river side dike. Natural surface drainage into the <br />reservoir from the sand hills on the south would be rogligible. The <br />spillway would consist of an uncontrolled riprap protected open channel <br />across the sandhills at the southeast cornor of the reservoir. It weuld <br />have a capacity of about 425 second-foet with a head of 2 foet. Seepa~e <br />losses from the reservoir would be prevented through construction of ;;i <br />cut-off trench extending to the underlying rock. The trench wouid hq-v'e <br />an aVel'age depth of about 40 feet and would be backfilled with 1inperV'ious <br />earth materials. The Granada Reservoir is estimated to cost $6,768,000 <br />based on July 1953 prices, <br /> <br />- 2 - <br /> <br />