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PHYSICAL INFORMATION <br />The major structural elements included in the City of Loveland's water resources system are the <br />Loveland Pipeline, the Hansen Feeder Canal, the Dille Tunnel, the Olympus Tunnel, and the <br />Green Ridge Glade Reservoir. The Hillsborough Ditch is the first irrigation structure below the <br />City's wastewater treatment plant (WWTP). These structures are located as shown in Figure 1. <br />Information related to the Hansen Feeder Canal, owned and operated by the NCWCD, and the <br />Dille Tunnel and Olympus Tunnel, owned and operated by the U.S. Bureau of Reclamation, is <br />presented in the Task SMemorandum Northern Colorado Water Conservancy District and the <br />Colorado Big Thompson Project. The history, operations, current specifications, and available <br />HydroBase data of the other elements of the City's water resources infrastructure are <br />summarized below. <br />1) Loveland Pipeline (Structure ID 0400511) <br />The Loveland Pipeline has served <br />as the City's major diversion <br />structure from the Big Thompson <br />River since the late-1880s. The <br />City shares a river diversion dam <br />with the Home Supply Ditch, as <br />shown in Figure 2 provided by the <br />City of Loveland. The Home <br />Supply Ditch is located on the <br />south side of the river while the <br />City's concrete supply ditch <br />travels about 300 feet northeast of <br />the river into a fore bay of the <br />City's potable water treatment <br />plant (aka Chasteen Grove filter <br />plant). The supply ditch has a <br />capacity of 72 cfs and diversions <br />are measured at the plant. <br />HydroBase Data <br />The monthly data over the 1950-2002 period of record pertaining to the Loveland Pipeline <br />include the following: <br />Total River Diversions <br />• Complete record except for Nov-Dec 1949, water year 1964 and Nov-Apr of 1965-1969. <br />• The historic total diversions available in HydroBase have ranged from approximately <br />2,000 ac-ft/yr in the 1950s, growing to approximately 12,000 ac-ft/yr over the last <br />decade. A noticeable drop in diversions is evident after the household meter installation <br />effort was completed in 1981, as shown in the record of historic diversions in Figure 3. <br />City of Loveland Operating Memorandum.doc Page 4 of 15 January 5, 2005 <br />Figure 2 -Loveland Pipeline Diversion Works <br />