Turkey Cr Watershed Site 10-11, located in Cass, Iowa, is a critical site managed by the local government for fire protection, stock, and small fish pond purposes. The dam, constructed in 1984 by the USDA NRCS, stands at a height of 23 feet and spans a length of 832 feet, with a storage capacity of 83 acre-feet. Despite having a low hazard potential, the dam plays a vital role in flood risk reduction for the TR- LONE TREE BRANCH river/stream.

With a drainage area of 0.34 square miles and a surface area of 7.5 acres, this earth dam is regulated by the Iowa DNR and is subject to regular state inspection, permitting, and enforcement. The site has a moderate risk assessment rating, reflecting the need for ongoing risk management measures. As part of the Omaha District, the dam is designed to ensure the safety and water resource sustainability of the surrounding community of LEWIS.

Overall, Turkey Cr Watershed Site 10-11 serves as a crucial resource for both water management and climate resilience in the region. Its strategic location and purposeful design highlight the importance of effective watershed management practices in safeguarding communities and ecosystems against potential hazards and promoting sustainable water resource utilization.