Ls Miller 4-3375, also known as Miller SWS, is a water resource structure located in Correctionville, Iowa, along the Tr- Little Sioux River. Owned by the local government and designed by USDA NRCS, this earth dam was completed in 1960 for the purpose of grade stabilization. Standing at a height of 32 feet and with a length of 250 feet, it has a storage capacity of 33 acre-feet and covers a drainage area of 0.31 square miles.

Managed and funded by the Natural Resources Conservation Service, Ls Miller 4-3375 serves as a vital component in the local water infrastructure, with a low hazard potential and a moderate risk assessment rating. The dam features an uncontrolled spillway and outlet gates, ensuring proper water flow regulation and flood protection for the surrounding area. While the condition assessment is currently unavailable, the structure continues to serve its intended purpose effectively, contributing to the overall water resource management efforts in Woodbury County, Iowa.

As an important piece of the water resource puzzle in the region, Ls Miller 4-3375 plays a crucial role in maintaining the ecological balance and water quality of the Tr- Little Sioux River. With its design and construction overseen by USDA NRCS and ongoing management by federal agencies, this earth dam stands as a testament to the collaborative efforts aimed at sustainable water resource management and climate resilience in the area. Its strategic location and purposeful design make it a key asset in the local water infrastructure, ensuring the safety and well-being of the community for years to come.