South Platte Reservoir, located in Arapahoe County, Colorado, is a crucial water supply reservoir managed by the local government. Constructed in 2007 by TETRA TECH RMC, this reservoir on the South Platte River has a dam height of 64 feet and a maximum storage capacity of 7,435 acre-feet. The reservoir covers a surface area of 152 acres and serves the primary purpose of water supply for the region.

With a spillway width of 522 feet and a maximum discharge capacity of 13,045 cubic feet per second, South Platte Reservoir is equipped to manage high hazard potential. Despite this, the condition assessment of the reservoir as of March 2020 was rated as satisfactory. The risk assessment for the reservoir is moderate, and it undergoes regular inspections and is subject to state regulation and enforcement, ensuring its safe operation for water resource and climate enthusiasts who rely on its critical role in water supply management in the region.