C-BT Recreation - West Slope

The Colorado-Big Thompson Project's four West Slope reservoirs and Grand Lake offer many recreational opportunities, including boating, fishing, camping, hiking and winter activities. Northern Water and the U.S. Bureau of Reclamation operate the C-BT Project's collection, distribution and power facilities, while several other public agencies manage recreation on and around the reservoirs.
Grand Lake

Grand Lake, the largest natural lake in Colorado, is part of the C-BT Project's West Slope collection system. The East Inlet boat ramp is open to the public and shares a parking lot with the East Inlet trailhead. For Grand Lake boating and recreation information, including the East Inlet boat ramp, contact:

Town of Grand Lake
Phone: (970) 627-3435

Lake Granby, Shadow Mountain & Willow Creek Reservoirs

There are five boat ramps on Lake Granby, Shadow Mountain and Willow Creek reservoirs. For information on boat ramp locations and boat access at all three reservoirs, contact:

Arapaho National Recreation Area
Phone: (970) 887-4100

Green Mountain Reservoir

Green Mountain Reservoir is located on the Blue River 12 miles southeast of Kremmling, CO. For marina information at Green Mountain Reservoir contact:

Heeney Marina
Phone: 970-724-9441 

Windy Gap Watchable Wildlife Area

The Windy Gap Watchable Wildlife Area is located at Windy Gap Reservoir two miles northwest of Granby, CO on U.S. 40. The viewing area is open May 1 to September 30 and has an information kiosk, interpretive panels and viewing scopes along a handicapped-accessible nature trail. More than 100 types of birds have been spotted at the viewing area, including herons, pelicans, bald eagles, hawks and falcons. 
Colorado-Big Thompson Project West Slope Collection System map
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Boat Inspections for Zebra and Quagga Mussels

The Colorado Department of Natural Resources coordinates boat inspections for zebra and quagga mussels. These highly invasive freshwater mollusks can damage water distribution and recreation facilities by attaching themselves to hard surfaces, such as pipelines and boats. See the Colorado Parks and Wildlife's Mandatory Boat Inspection page for the current status of inspection sites and boating restrictions.