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<br />Operations. An expected Granby Reservoir content of approximately 183,500 acre-feet at the end of <br />the Water Year will be 42 % of the 3D-year average. <br /> <br />o <br />o <br />~ <br /> <br />, l <br /> <br />East Slope - Colorado-Bil! Thompson Proiect <br /> <br />~ <br />~ <br /> <br />If climatic conditions produce the most probable inflow, a supplemental irrigation demand and <br />municipal and industrial demand of 146,400 acre-feet will be expected on the C-BT for the period <br />February through September. <br /> <br />Adams Tunnel diversions averaged approximately 350 ft3/s between the months of November and <br />January. Pumping to Carter Lake began in November and continued uninterrupted until late January. <br />Carter Lake reached a content of 100,000 acre-feet (elevation 5748.10 feet) on January 31. <br />Additional pumping to Carter Lake is expected later in February, as well as in the summer months. <br />Flatiron Unit #3 pump will undergo its annual maintenance during May. <br /> <br />A maximum potential volume of 39,714 acre-feet of C-BT carryover water could be delivered <br />between February I and October 31. It is expected that targeted reservoir levels will be reached in <br />time for the water season, as well as the recreational season. <br /> <br />Adams Tunnel and Olympus Tunnel diversions will be interrupted in April, as the City of Estes Park <br />prepares to install a pumping well at Marys Lake. The new pumping station will serve as a backup <br />system for the water treatment facility for the City, which withdraws water directly from the headgate <br />structure at Marys Lake. This backup system will allow ECAO to follow maintenance schedules <br />without affecting the water supply for the City. 1t will also prevent any future power interferences. <br />The outage at Adams and Olympus ttutnels could affect power generation for a minimum of three <br />weeks. During that period, any potential water demand for the Charles Hansen Feeder Canal will be <br />met with water available at Lake Estes, Pinewood and Flatiron reservoirs, as well as Carter Lake. <br />The flow north is expected to average between 30 and 40 ft3 Is. <br /> <br />After the above work is completed, flows through Adams and Olympus tunnels will resume, as <br />needed. Adams Tunnel diversions will be adjusted to accommodate runoff quantities on the East <br />Slope. This operation will depend on the Horsetooth Reservoir limited storage capacity. During a <br />typical year, Adams Tunnel diversions would be scheduled to minimize any Lake Granby spills, <br />maximize East Slope terminal storage, and to take advantage of operation "skim" to the fullest extent <br />possible. However, due to dry conditions prevailing across the state and the low levels of Lake <br />Granby, as well as the limited storage space in Horsetooth Reservoir, a limited amount of C-BT <br />water will be flowing north to Horsew"th. Similar to Water Year 2002, the flow north could be <br />limited to the actual water demands. East Slope skim water will, most likely, be utilized as much as <br />possible in order to generate power along the Foothill's system. Under operation "skim", based on <br />the most probable forecast, potentially 45,000 acre-feet of Big Thompson River water could be <br />diverted at Lake Estes through the Foothills Power System from April through September. The <br />majority of "skim" water (25,700 acre-feet) will be diverted during June. In addition to the expected <br />volume of water to be diverted through the Foothills Power System, 61,200 acre-feet could be <br />diverted through the Dille Tunnel. <br /> <br />18 <br />