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<br />GREELEY AND LOVELAND IRRIGATION COMPANY <br />BOYD LAKE SPILLWAY REHABILITATION <br /> <br />p~~~. ~. <br /> <br />- . -~- "",~~,.4~....~_r-::m~~"""",:::,:~~ _'!!-~~ <br /> <br />_~ ,Y" <br /> <br />=- <br /> <br />/' <br /> <br />// <br /> <br />~.... <br /> <br />l <br /> <br />I <br /> <br />\ ~ g ~ <br /> <br />III <br /> <br />.. <br /> <br />- <br />Completed Labyrinth Spillway Looking West <br /> <br />Proiect Description <br /> <br />The Greeley and Loveland Irrigation Company and its sister company the Seven Lakes Irrigation <br />Company, own and operate an extensive system of reservoir and canals in Loveland and the Greeley area. <br />The Greeley and Loveland Irrigation Company own Boyd Lake, the largest reservoir in their system with a <br />surface area of 1,750 acres and a capacity of 48,875 acre-feet. The dam is a Class I facility. The existing <br />spillway was a 20-foot long grass swale, with really no means of conveying any storm flows. The SEO <br />requires that a Class I facility spillway pass 75% of the PMP. To meet SEO requirements the Company <br />designed and constructed a new labyrinth spillway, approximately I, I 00 feet in length with an effective <br />weir length of 5,720 feet, and I, I 00 feet of concrete trapezoidal channel below the spillway. <br /> <br />Proiect Data <br /> <br />Sponsor: Greeley & Loveland Irrig. Co. County: Logan Water Source: South Platte River <br /> <br />Terms of Loan: 2,844,000@3.0% for 30-yrs. Substantial Completion Date: July 1,2006 <br /> <br />Design Engineer: Boyle Engineering, Inc. - Lakewood, Colorado <br /> <br />Construction Contractor: Gracon Contractors, Inc. - Loveland, Colorado <br /> <br />Construction Elements: <br /> <br />Annual Diversion: 37,812 acre-feet <br />