Kars Add-On #940 is a private dam located in Franklin County, Kansas, along the Sac Creek. This earth dam serves the primary purpose of irrigation, with a storage capacity of 147 acre-feet and a normal storage level of 43.4 acre-feet. The dam has a height of 20.5 feet and a length of 1600 feet, providing water for agricultural purposes in the region.

Managed by the Kansas Department of Agriculture, Kars Add-On #940 is regulated, permitted, inspected, and enforced by the state agency to ensure its safety and compliance with regulations. Despite being classified as having a low hazard potential and not yet rated for its condition assessment, the dam plays a crucial role in water resource management in the area. With a drainage area of 0.13 square miles and a surface area of 9.3 acres, the dam contributes to the local irrigation system.

Although last inspected in December 2012, Kars Add-On #940 continues to support the agricultural community by providing irrigation water from the Sac Creek. With its private ownership and state regulation, the dam remains an essential infrastructure for water resource management in Franklin County, Kansas, contributing to the sustainable use of water for irrigation purposes in the region.