Cannon Dam, located in Decatur County, Iowa, was completed in 1988 and is primarily used for fire protection, stock, and small fish pond purposes. The earth dam stands at a height of 28 feet and spans a length of 280 feet, with a storage capacity of 62 acre-feet. The dam is regulated by the Iowa Department of Natural Resources and is deemed to have a low hazard potential and a moderate risk level.

Situated on TR-Shane Creek, a tributary to the Missouri River, Cannon Dam plays a crucial role in managing water resources in the area. The dam's location in a rural setting underscores its importance for agricultural and environmental purposes. Despite not having a spillway, the dam's design by the Soil Conservation Service ensures its structural integrity and functionality for maintaining water levels in the surrounding area.

With its efficient operation, Cannon Dam contributes to the overall water management efforts in Iowa. The dam's moderate risk level signifies the need for ongoing monitoring and maintenance to uphold its functionality and safety standards. As a key water resource infrastructure in the region, Cannon Dam serves as a testament to the importance of sustainable water management practices in the face of changing climate conditions.