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4, DNR COLORADO Hallenbeck Reservoir No. 1 Dam Rehabilitation <br /> CO Colorado Water <br /> 5-- 1 Conservation Board City of Grand Junction <br /> March 2016 Board Meeting <br /> LOAN D E T A I L S � <br /> Project Cost: $1,153,782 W <br /> CWCB Loan (with Service Fee): $1,010,000 <br /> Loan Term and Interest Rate: 20 years ® 2.65% \ <br /> ip, <br /> Funding Source: Construction Fund and WSRA Grants i <br /> _ BORROWERim <br /> TYPE + � <br /> Agriculture Municipal Commercial Wilif a 1611 i, <br /> 0% 0% Low - 100% Mid - 0% High 0% <br /> R S <br /> Project Type: Dam Rehabilitation �j, , ,r,,, <br /> Average Annual Delivery: 5,218 AF 1 rj / <br /> Recovered Storage: 699 AF -- <br /> '' I.. 0 C A T, ION <br /> Hallenbeck Reservoir No. 1 is one of the City of Grand County: Mesa <br /> Junction's 14 reservoirs. It has a capacity of 699 acre- Water Source: Kannah Creek <br /> feet. In 2014 the City of Grand Junction developed plans Drainage Basin: Gunnison <br /> to mitigate seepage through the dam; however, during Division: 4 District: 42 <br /> the evaluation process, seepage increased and an 80-foot <br /> crack developed on the downstream face of the dam. <br /> Water was immediately released from the reservoir in an effort to relieve hydrostatic pressure within <br /> the dam. The City completed a forensic evaluation of the dam that included a geotechnical <br /> investigation and structural evaluation. The purpose of this project is to repair the dam to allow the <br /> City to use all if the storage capacity. Construction involves removal of several feet of material on the <br /> downstream face of the dam, removal of the existing toe drain system, installation of a blanket filter <br /> on the downstream face, installation of a new toe drain system, installation of a buttress on the <br /> downstream face, and installation of new piezometers and monuments. This will allow the City to <br /> make use of its 1939 absolute irrigation right, and 1993 conditional municipal right. Construction is <br /> expected to occur in the summer of 2016. <br /> Ute Water Conservancy District Service AreaN. Jd sti ,� v <br /> , i X ` s k..,-. —N‘ r <br /> Clifton Water District ' <br /> City of Grand Junction Service Area (Blue) r' t • , <br /> `')(,-71% - -—..„;,...4 it...: <br /> f <br /> L <br /> , 4.t. ' ',, 1-' ' <br /> I-,1 ' ; Project Site .." ,.4i4.1.' <br /> Ad- <br /> -n , ,. '4 <br /> fa, i <br /> . <br /> r <br /> Water Project Loan Program - Project Data Sheet <br />