Big Tooth, also known as South Ruxton Creek, is a historic rockfill dam located in Manitou Springs, Colorado. Built in 1927 by URS Corporation, this local government-owned structure is regulated by the Colorado Division of Water Resources and serves as a crucial water supply source for the region. Standing at a height of 102 feet and with a storage capacity of 810 acre-feet, Big Tooth plays a vital role in managing water resources in El Paso County.

With a spillway width of 30 feet and a maximum discharge of 3655 cubic feet per second, Big Tooth has been classified as having a high hazard potential. Despite this, the dam's condition assessment in 2020 rated it as satisfactory, ensuring its continued safe operation for the community. The risk assessment for Big Tooth indicates a moderate risk level, with adequate risk management measures in place to address any potential concerns.

As a key component of the local water supply infrastructure, Big Tooth represents a blend of historical significance and modern engineering. Its role in regulating South Ruxton Creek and providing essential water storage underscores its importance in supporting the region's water resource management efforts, making it a focal point for water resource and climate enthusiasts alike.