Laserfiche WebLink
<br />Greeley and Loveland Irrigation Company. Boyd Lake SpllllNay <br />November 19-21. 2003 <br /> <br />Agenda Item Bd <br /> <br />. <br /> <br />Water Projsct Construction Loan Program-Projsct Data <br /> <br />Borrower: Greeley and Loveland Irrigation Co, County: Larimer <br /> <br />Project Name: Boyd Lake Spillway Project Type: Spillway Reconstruction <br /> <br />Drainage Basin: South Platte Water Source: 8ig Thompson River <br /> <br />Total Project Cost: 53,160,000 Funding Sources: CWCB, GLlC <br /> <br />Type of Borrower: Agricultural/Municipal Aver. Delivery: 37,812 acre-feet <br /> <br />CWCS Small Project Loan: $2,844,000 <br /> <br />Interest Rate: 3.00% <br /> <br />Term: 30 years <br /> <br />. <br /> <br />The Greeley and Loveland Irrigation Company (GLlC), and its sister company the Seven Lakes <br />Irrigation Company (SLlC), own and operate a system of reservoirs and canals in the Loveland and <br />Greeley area, with about 52% of water in municipal use and 48% agricultural. GLlC owns Boyd <br />Lake which has a surface area of 1,750 acres, capacity of 48,874 acre.feet, height of 40 feet and <br />crest length of 10.729 feet. The dam is a Class 1 embankment dam. Previous studies identified <br />possible need for improvements to the Boyd Lake spillway, and possibly the Horseshoe Lake <br />spillway, as both reservoirs basically operate together as a system. The current spillway is a natural <br />swale, located near the pump house in the east side of the dam embankment, with an approximate <br />spillway width of 20 feet. It is abandoned and is no longer operable or capable of conveying any <br />storm flows. The SEO requires that Class I dams contain spillways capable of safely passing 75% <br />of the Probable Maximum Precipitation (PMP) stann event. Even if operable, the existing spillway <br />could only safety pass approximately 16% of the PMP event. The GLlC is applying for a $2,844,000 <br />Small Project Loan to provide a new spillway for Boyd Lake. Site-specific PMP studies have shown <br />a need for spillway improvements on Boyd Lake only. The selected alternative consists of a <br />combination of labyrinth spillway with a width of about 1,100 feet and an effective weir length of <br />5,720 feet: replacing 1,100 feet of canal lining downstream of the spillway; and constructing a 350 <br />long f100dwall to prevent water from entering i{lto two structures during f1000 events. <br /> <br />111 ,: <br />j t.__u__ <br />"\, <br />_m_~!r <br />, ~, <br />, <br /> <br /> <br />v << <br />B <br />-~ <br />S . <br />--. <br />I <br />/ <br />-~ <br />. <br />- <br /> <br />R~" <br />. <br />i <br /> <br />. <br /> <br />ve <br />/.,.., ~Project <br />__ n . Location <br /> <br />,.. <br /> <br />, <br /> <br />-- <br /> <br />Location Map <br />