Chimney Hollow Reservoir’s location adjacent to C-BT Project infrastructure will enable water to easily be moved in and out of the reservoir when C-BT Project capacity is available per an agreement with the U.S. Bureau of Reclamation.  

The process of getting water to Chimney Hollow Reservoir begins on the West Slope. Just west of Granby sits Windy Gap Reservoir, where water is collected and pumped six miles via pipeline to Lake Granby. From there, existing C-BT infrastructure conveys Windy Gap water through Shadow Mountain Reservoir and Grand Lake to the Adams Tunnel, which flows beneath Rocky Mountain National Park.  

After traveling 13.1 miles through the tunnel to the East Slope and then through four reservoirs and three power plants, water will make its way in and out of the Chimney Hollow Reservoir through the inlet/outlet works, which includes C-BT Project interconnections, the conduit, valve house, the inlet/outlet tunnel and the inlet/outlet tower located within the right (east) abutment.  From Chimney Hollow Reservoir, water is released into Flatiron Reservoir where it can be delivered to the 13 Participants using the existing C-BT distribution system that spans across northern Colorado.