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I I I I I I I I I I B.3. Douglas Reservoir Douglas Reservoir is located on Dry Creek, a tributary of Cache LaPoudre River, in Larimer County. The dam and spillway for this reservoir were rehabilitated in 1991. The reservoir is the first reservoir mied through the Poudre Valley Canal and the inlet into Douglas can handle the whole ditch. Water from Douglas Reservoir is exchanged with the Water Supply and Storage Company (WSSC) as the reservoir does not discharge directly into canals utilized by the Windsor Reservoir and Canal Company. Releases are normally 75 cfs to 125 cfs into Dry Creek which fills WSSC Reservoir #4 and Long Pond through the Jackson Lateral. Water can be discharged directly from Long Pond into the Larimer and Weld Canal. Water from Terry Lake, which also can discharge into the Larimer and Weld Canal, is traded for water supplied to WSSC Reservoir No. 4 and Long Pond. B.4. Windsor Reservoir No.8 Windsor Reservoir No.8 is the second reservoir located along and filled through the Poudre Valley Canal. The reservoir inlet can handle approximately.225 cfs and the outlet can carry approximately 135 cfs. The Poudre Valley Canal splits above No.8 and a portion of the water can be diverted to Cobb Lake. Water from this reservoir is discharged into Elder Reservoir which discharges into the Larimer and Weld Canal. Windsor Annex No.8 is an equalizer for Reservoir No.8 and is not operated separately. This reservoir is filled and discharges through a conduit that connects the two reservoirs. This conduit is normally not controlled and the reservoir water level is the same as in No.8. The State Engineer considers the two reservoirs as one and does not maintain separate water storage records. I I I I B.S. Elder Reservoir Elder Reservoir is located directly below Reservoir No.8 and is filled out of No.8. The outlet on Elder can deliver approximately 135 cfs into the outlet canal which discharges into the Larimer and Weld Canal. The discharge capacity is limited by the ditch below the reservoir which would overtop if the outlet was discharging at maximum capacity. B.6. Cobb Lake I I I I I Cobb Lake is filled through the Poudre Valley Canal on the east side of the reservoir and is at the terminal end of the canal. This reservoir is the least used reservoir in the system and is the last to be filled. The Poudre Valley Canal can carry approximately 200 cfs to Cobb and only about 125 cfs can be released due to constrictions in the downstream ditches. Approximately 75 % of the water utilized out of Cobb is traded with the Water Supply & Storage Company and 25% is diverted to the Eaton Ditch. Water Supply trades water out of Long Pond with maximum releases of approximately 75 cfs. Page IV-4 WR&C Feasibility Study