Mc Masters Subwatershed 3075, located in Monona, Iowa, is a crucial water resource managed by the local government with oversight from the Iowa Department of Natural Resources. This subwatershed plays a vital role in fire protection, stock maintenance, and small fish pond management, while also contributing to flood risk reduction in the area. The primary dam in this subwatershed, completed in 1955, is an earth-type structure with a height of 25 feet and a storage capacity of 76 acre-feet.

The dam, situated along the TR-Little Sioux River, covers a surface area of 3 acres and serves a drainage area of 0.38 square miles. Despite its low hazard potential, the dam has not been rated for its condition assessment, and no inspection frequency or emergency action plan (EAP) has been documented. With a moderate risk rating of 3, there is a need for further risk assessment and management measures to ensure the safety and sustainability of this water resource. As enthusiasts for water resources and climate, it is essential to monitor and advocate for the proper maintenance and regulation of Mc Masters Subwatershed 3075 to protect its ecological health and surrounding community.