Mc Larty-Edwards Subwtrshd Sta 54+65 #1 is a low hazard potential earth dam located in Woodbury County, Iowa, designed by the USDA NRCS and completed in 1966. The dam's primary purpose is for fire protection, stock, or small fish pond, with additional purposes including flood risk reduction. The dam has a height of 25 feet, a length of 353 feet, and a normal storage capacity of 21 acre-feet, serving an area with a drainage area of 0.73 square miles and a surface area of 2.1 acres.

Managed by the local government, the dam is regulated by the Iowa DNR and meets state permitting, inspection, and enforcement requirements. Situated on TR-Mud Creek, the dam has an uncontrolled spillway and is categorized as having a moderate risk level. The structure has not been rated for its condition, and emergency action preparedness details are not available. Despite its low hazard potential, the dam plays a crucial role in water resource management and climate resilience efforts in the region, serving as an essential infrastructure for local fire protection and agricultural activities.