Otte Dam, located in Lee County, Iowa, is a privately owned earth dam constructed in 1979 by the USDA NRCS for fire protection, stock, and small fish pond purposes. The dam stands at a height of 31 feet and spans a length of 250 feet, with a storage capacity of 58 acre-feet. Situated on TR-Devil Creek near the Mississippi River, Otte Dam is regulated by the Iowa DNR and is subject to state permitting, inspection, and enforcement.

Despite its low hazard potential, Otte Dam poses a moderate risk, with a risk assessment rating of 3. The dam features an uncontrolled spillway and is designed to withstand potential flooding events. Although its condition is currently not rated, Otte Dam is equipped with emergency action plans, although specific details regarding their preparation and guidelines compliance are not provided. Overall, Otte Dam serves as a crucial water resource for the surrounding area, providing essential services for fire protection and livestock management while contributing to the local ecosystem.