What will the Moffat Collection System Project do to Gross Reservoir?
The proposed Moffat Collection System Project would increase Gross Reservoir from its current storage capacity of 41,811 acre-feet to approximately 114,000 acre-feet — an increase of 72,000 acre-feet (one acre-foot is equal to 325,851 gallons of water and will supply about 2.5 single-family households for a year). The current dam height would be increased by 125 feet (from 340 feet to 465 feet). Gross Reservoir originally was designed to be this size, but because of budget constraints in the 1950s, a smaller dam was constructed. Connecting facilities, such as the Moffat Tunnel and South Boulder Canal, would not need to be modified.
