Marston Lake

Marston Lake is a reservoir in Denver, Colorado. It is owned by Denver Water and was completed in 1902. The reservoir sends water to the Marston treatment plant, and from there the water is distributed to Denver residents.

The reservoir receives water from the South Platte River. The river receives water from the Colorado Western Slope through a transmountain diversion via the Roberts Tunnel.

Climate
According to the Köppen Climate Classification system, Marston Lake has a cold semi-arid climate, abbreviated "BSk" on climate maps. The hottest temperature recorded at Marston Lake was 104 °F on July 18, 1998, while the coldest temperature recorded was -19 °F on December 31, 2014.