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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />.. ~ ....,~ <br /> <br />/ <br /> <br />~11-8 <br /> <br />Chapter 4 <br />AMITY DEVELOPMENT PLAN <br /> <br />GENERAL DESCRIPTION <br /> <br />The Amity System Rehabilitation Plan consists primarily of rehabilita- <br />tion of structures. Most of the work will be on structures in the Amity. <br />Comanche and Kicking Bird Canals. Work will also be done on two of the <br />outlet structures and spillways for the Great Plains Reservoirs, An <br />office/maintenance building will be provided to house equipment and re- <br />pair shops. Also included is the purchase of maintenance equipment. <br /> <br />AMITY CANAL <br /> <br />A bend in the Amity Canal will be straightened between mile 79,5 and <br />79,8. The new canal section will have the same cross section as the <br />existing section. The proposed alignment and the land surrounding the <br />existing alignment are owned by one farmer. An even right-of-way swap <br />is proposed, <br /> <br />CANAL STRUCTURES <br /> <br />Description of Improvements <br /> <br />Most existing structures are in poor condition, particularly gates and <br />gate operating equipment, The structures to be rehabilitated are list- <br />ed individually in Appendix A, Description of Work and Cost Estimate. <br />Rehabilitation will consist primarily of replacing gates and hoists, <br />patching deteriorated concrete and replacing erosion protection, Seve- <br />ral structures will be faced with new concrete, The structures are <br />widely scattered and forming and placing concrete in relatively small <br />pours results in above average unit costs. Extensive use of epoxy <br />grout is also anticipated. <br /> <br />Twelve structures are beyond rehabilitation and will be replaced, They <br />are the River Return Wasteway, Parrish Drop Structures (2), three Check <br />Structures, Wild Horse Creek Wasteway. Hutchinson Drop Structure, the <br />Cheyenne Wasteway. the inlet and outlet transitions on Comanche Pipe <br />drop structure and the Big Sandy Creek Diversion Structure. The pre- <br />liminary design layout for the Big Sandy Creek Diversion structure is <br />shown on Plate 3, <br /> <br />Two new structures will be added to the system, A spillway and check <br />structure will be constructed at the Wiley Drain to handle flood in- <br />flows and a drop structure will be added at the downstream end of the <br />Amity Canal to control channel degredation, The new structure will be <br />constructed within the existing right-of-way. <br /> <br />4-1 <br />