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through the Bald Mountain Pressure Tunnel with a capacity of 960 cfs. There are no HydroBase <br />data available related to Pinewood Reservoir <br />Flatiron Reservoir (no Structure ID) <br />Flatiron Reservoir is a central distribution point for C-BT Project water and serves as an afterbay <br />for the Flatiron Power Plant. The reservoir, constructed between 1951 and 1953, is located <br />southwest of the City of Loveland. At full capacity it stores 760 ac-ft of water with a surface area <br />of 47 acres. Water is conveyed from Flatiron Reservoir to the south or to the north. The Hansen <br />Feeder Canal begins at Flatiron Reservoir and delivers water northward to the Big Thompson <br />River and ultimately to Horsetooth Reservoir. For water heading southward, a pump is required <br />to lift water from Flatiron Reservoir into Carter Lake. There are no HydroBase data available <br />related to Flatiron Reservoir <br />2) Carter Lake (Structure ID 0404513) <br />Carter Lake, the second largest reservoir in northeastern Colorado, is the principal storage site <br />for Colorado-Big Thompson Project deliveries to the south and east. Construction began in July <br />1950 and was completed in September 1952. Carter Lake has a total storage capacity of 112,200 <br />ac-ft and covers 1,144 surface acres. Water from Carter Lake is delivered to municipalities, <br />industries and irrigators in Larimer, Boulder, Broomfield, and Weld counties. <br />HydroBase Data: There are sporadic monthly data available in HydroBase over the 1950-2002 <br />period of record pertaining to Carter Lake. NCWCD provided monthly storage records <br />for this reservoir. <br />Elevation Capacity Data: An elevation-capacity curve for the reservoir was provided by <br />NCWCD. A subset of points from the curve is provided in Table 1. <br />Table 1 <br />Carter Lake <br />Stage -Area -Capacity Curve <br />Elev. Area Capacity <br />(ft) (Acres) (Ac-Ft) <br />5618 264 3306 <br />5628 352 6419 <br />5638 431 10330 <br />5648 518 15075 <br />5658 605 20689 <br />5668 682 27142 <br />5678 748 34294 <br />5688 810 42088 <br />Elev. Area Capacity <br />(ft) (Acres) (Ac-Ft) <br />5698 864 50463 <br />5708 918 59372 <br />5718 969 68819 <br />5728 1017 78748 <br />5738 1057 89116 <br />5748 1099 99897 <br />5759 1144 112230 <br />Source: NCWCD. Note: Dead storage of 3306 ac-ft (elevation 5618 feet) <br />St. Vrain Supply Canal (Structure ID 0400692) <br />The St. Vrain Supply Canal delivers water from Carter Lake to the Little Thompson River, St. <br />Vrain Creek, and Boulder Creek Supply Canal. The latter ultimately delivers water to Boulder <br />Reservoir and Boulder Creek. The South Platte Supply Canal is capable of conveying C-BT <br />10 of 17 <br />