Pinewood Reservoir

Pinewood Reservoir is a key component of the Colorado-Big Thompson Project power system as well as a recreation and camping area tucked in the foothills west of Berthoud, CO.

Pinewood Reservoir is the afterbay to the Pole Hill Power Plant and the forebay for the Flatiron Power Plant. The reservoir helps regulate and manage peak power demands.

Pinewood Reservoir
Pinewood Reservoir

C-BT Project water flows from Lake Estes through the Olympus Siphon and Tunnel and Pole Hill Tunnel and Canal into the Pole Hill penstock (aboveground pipe) and power plant. From there, water flows through the Rattlesnake Tunnel into Pinewood Reservoir, which is formed by the Rattlesnake Dam.

Recreation at Pinewood Reservoir Pinewood is a popular boating, fishing and camping area. The campground and boat launch are located on the east side of the reservoir along County Road 18E. Only wakeless boating is permitted. Because of its role in regulating power demand, the reservoir’s water level will vary according to demand.

The reservoir is surrounded by 327 acres of public land, and a hiking trail follows the shoreline on three sides. For more information, see the C-BT Recreation - East Slope page.

Construction Completed in 1952 Construction of the reservoir began in 1951 and was completed in 1952. The project cost $1.2 million. Originally known as Rattlesnake Reservoir because of its location in Rattlesnake Park, the reservoir’s name was officially changed to Pinewood in 1966.

Pinewood Reservoir has a capacity of 2,181 acre-feet of water, 97 surface acres, 3 miles of shoreline and its maximum depth is 24 feet.