Rasmussen Dam, located in Runnells, Iowa, is a private earth dam with a primary purpose of fire protection, stock, or small fish pond. Constructed in 2006 by the USDA NRCS, this dam stands at a height of 31 feet and has a length of 625 feet, with a storage capacity of 51 acre-feet. The dam is situated on TR-Mud Creek, in Polk County, Iowa, and is owned and regulated by a private entity.

With a low hazard potential and a moderate risk assessment rating, Rasmussen Dam plays a crucial role in water resource management and climate resilience in the area. The dam has state jurisdiction and is subject to regular state permitting, inspection, and enforcement by the Iowa Department of Natural Resources. Despite being uncontrolled, the dam has a spillway width of 2 feet and a surface area of 4.3 acres, serving as a vital structure for flood control and water supply in the region.

Rasmussen Dam's design and construction by the Natural Resources Conservation Service demonstrate a commitment to sustainable water management practices. With its strategic location and operational efficiency, the dam contributes to the overall water infrastructure and environmental protection efforts in Iowa. As a key component of the local watershed, this dam provides essential benefits for fire protection, livestock, and aquatic habitat, highlighting its significance for water resource and climate enthusiasts.