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Water is released from Riverside Reservoir to the Riverside Canal for delivery to lands within <br />the District. The unlined outlet canal is approximately 90 miles long with a capacity of 370 cfs. <br />The canal is siphoned under both Wildcat Creek (3/4 mile siphon) and Aker Draw (quarter mile <br />siphon). The canal also conveys direct flow and Riverside Reservoir storage water for storage in <br />Vancil Reservoir, located in the lower portion of the System. <br />Vancil Reservoir, completed in 1990, is used in the System to store additional water, from <br />diversions via Riverside Canal, during times of high flows in the South Platte River. Releases <br />are then made to supplement both direct flow diversions and Riverside Reservoir releases in the <br />lower portion of the System. The reservoir frequently fills despite having junior water rights. In <br />addition to providing storage, the reservoir serves as an integral part of the System's recharge <br />plan providing recharge credit for reservoir seepage losses. <br />Riverside Reservoir (Structure ID 0103651) <br />Capacity: <br />Total Storage: 65,008 acre-feet <br />There is not a storage restriction on the reservoir. <br />Active Storage: 57,508 acre-feet <br />Dead Storage: 7,500 acre-feet due to siltation <br />Area/Capacity Data: The date of the survey for the elevation -capacity table is <br />unknown, although the survey was performed prior to 1950. <br />Table 1 <br />Riverside Reservoir Elevation-Ca acity <br />Elevation <br />ft Cumulative Capacity <br />ac-ft <br />4477.0 0.0 <br />4480.0 710.0 <br />4485.0 3,391.0 <br />4490.0 8,817.0 <br />4495.0 17,204.0 <br />4500.0 28,859.0 <br />4505.0 43,734.0 <br />4510.0 61,218.0 <br />4511.0 65,008.0 <br />Enlargement History: Riverside Reservoir has never been enlarged. <br />Reservoir Storage Measurement: Storage levels in Riverside Reservoir are measured using a <br />staff gage. The Company operates the reservoir such that diversions into storage are <br />measured at a point just upstream of the reservoir, and the reservoir is filled to a gage <br />height per the 12/25/1910 rod decree. The Company is responsible for collecting and <br />reporting the end-of--month storage amount to the Water Commissioner in Water <br />District 1. <br />Riverside Irrigation System.doc Page 7 of 14 <br />