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Ownership: Larimer Weld Irrigation Canal and Big Windsor Reservoir are owned by Larimer <br />and Weld Irrigation Company and Larimer and Weld Reservoir Company, respectively. <br />Length: Total length of the Larimer Weld Irrigation Canal is approximately 65 miles. <br />Capacity: The estimated physical capacity of the Larimer Weld Irrigation Canal is <br />approximately 1,000 cfs. <br />Conveyance Efficiency: Unknown <br />Irrigated Area: There are approximately 63,500 total irrigated acres under the Larimer Weld <br />Irrigation Canal, of which approximately 48,500 acres are flood irrigated and 15,000 <br />acres are sprinkler irrigated. <br />Return Flow Locations: Return flows from the Larimer Weld Irrigation Canal accrue to the <br />New Cache Company's Greeley No. 2 Ditch, Dry Creek, Boxelder Creek, The Slough, <br />Coalbank Creek, Town Lateral, Mead Lateral, Spring Creek, Lone Tree Creek, Owl <br />Creek, Willow Creek, and the Cache la Poudre River. <br />Measurement Device: Diversions through Larimer Weld Irrigation Canal are measured through <br />a 30 -foot rectangular Parshall flume equipped with a Stevens recorder. <br />HydroBase Data: Daily diversion data for the Larimer Weld Irrigation Canal is available under <br />Structure ID 0300919 in HydroBase for the 1950 to 2002 SPDSS study period. Between <br />1950 and 2002, average annual diversions through the Larimer Weld Irrigation Canal <br />were 77,671 acre-feet per year. <br />Big Windsor Reservoir (Structure ID 0303738) <br />Windsor Reservoir is referred to locally as Big Windsor Reservoir. Big Windsor Reservoir is <br />filled through the Larimer Weld Irrigation Canal. Big Windsor Reservoir can be used for storage <br />and equalization of flow in Larimer Weld Irrigation Canal. Releases from Big Windsor <br />Reservoir can be made back to the Larimer Weld Irrigation Canal or to Greeley No. 2 Canal, <br />owned by The New Cache Company. <br />Capacity: <br />Big Windsor Reservoir Total Storage: 17,689 acre-feet <br />Big Windsor Reservoir Active Storage: 15,207 acre-feet <br />Big Windsor Reservoir Dead Storage: 2,482 acre-feet <br />Big Windsor Reservoir Outlet Capacity: 360 cfs <br />Big Windsor Reservoir Spillway Capacity: 4,940 cfs at a freeboard height of 3.8 feet <br />Area/Capacity Data: Reservoir gage height, area, and cumulative capacity information for Big <br />Windsor Reservoir are provided in Table 3. Dead storage in Big Windsor Reservoir is <br />that storage below a gage height of 12.9 feet. The cumulative capacity presented in Table <br />3 includes dead storage capacity. <br />Larimer&Weld Memo.doc <br />12 of 20 <br />