The Rueter-Hess Reservoir in Parker was completed in 2012 with collaboration among four South Metro Water members serving Parker as well Castle Rock, Castle Pines North and Stonegate Village District. The reservoir provides reliable water storage to the region. When filled, the reservoir will encompass 1,170 acres, making it 50 percent larger than Cherry Creek. The reservoir enables Parker to capture and reuse water, lessening dependence on nonrenewable groundwater. The district is also exploring possible recreational uses for the reservoir.