Chilco is a privately owned dam located in Idaho, specifically in Kootenai County near the city of Chilco. Built in 1907, this earth dam stands at a height of 17.3 feet and has a hydraulic height of 16 feet, with a storage capacity of 340 acre-feet. The dam spans 90 feet in length and covers a surface area of 42.6 acres, serving the purpose of water storage for various activities.

Chilco Creek Sinks is the river or stream associated with the dam, and it is regulated by the Idaho Department of Water Resources. The dam is equipped with a valve outlet gate and an uncontrolled spillway, with a maximum discharge capacity of 240 cubic feet per second. It has been assessed to be in fair condition as of the last inspection in May 2017, with a significant hazard potential due to its location and design. Despite the moderate risk level, the dam is maintained and inspected regularly to ensure its safety and effectiveness in water resource management within the area.