Located in Shelby County, Iowa, the Mill Picayune Watershed Site M-14-1 is a dam constructed in 1975 by the USDA NRCS for fire protection, stock, and small fish pond purposes. This earth dam stands at a height of 47 feet and spans a length of 525 feet, with a storage capacity of 236 acre-feet. Situated along TR-Mill Creek, the dam serves to reduce flood risks in the area, covering a drainage area of 0.57 square miles.

Maintained by the local government and regulated by the Iowa DNR, this dam has a low hazard potential and a moderate risk assessment rating. Despite not being rated for its condition, the Mill Picayune Watershed Site M-14-1 is regularly inspected, permitted, and enforced by state agencies to ensure its structural integrity and functionality. With a surface area of 8 acres and a normal storage capacity of 76 acre-feet, this dam plays a crucial role in water resource management in the region.

For water resource and climate enthusiasts, the Mill Picayune Watershed Site M-14-1 presents an intriguing case study of a multipurpose dam designed for both practical and environmental benefits. With its strategic location, efficient design, and regulated operations, this dam exemplifies the importance of sustainable water management practices in safeguarding communities against flooding events and supporting local ecosystems.