Tim Seim Dam, located in Tama, Iowa, is a privately owned structure designed by USDA NRCS to serve as a grade stabilization measure along a tributary of the Iowa River. Completed in 2017, this earth dam stands at a height of 25 feet and spans a length of 390 feet, with a storage capacity of 67 acre-feet. The dam primarily serves the purpose of grade stabilization and has a low hazard potential.

Despite being privately owned, Tim Seim Dam is regulated by the Iowa Department of Natural Resources, with state permitting, inspection, and enforcement in place. The dam is situated in a rural area with a surface area of 4 acres and a drainage area of 0 acres. With a maximum discharge capacity of 93 cubic feet per second, the dam features a spillway width of 16 feet. While the dam's condition assessment is currently not rated, it meets the necessary guidelines for emergency action planning and risk management measures.

Water resource and climate enthusiasts will be intrigued by the engineering design and environmental impact of Tim Seim Dam. As a vital infrastructure for mitigating erosion and stabilizing the local water system, this privately owned structure showcases the collaboration between federal agencies and state regulators. With its completion in 2017, the dam serves as a model for sustainable water management practices in the region, highlighting the importance of maintaining and monitoring such critical infrastructure for long-term environmental resilience.