Thorland Dam, located in Thompson, Iowa, is a private earth dam constructed in 1968 by the USDA NRCS for fire protection, stock, and small fish pond purposes. The dam stands at 20 feet high and spans 250 feet in length, with a storage capacity of 57 acre-feet. Situated on TR-PIKE RUN, the dam serves the surrounding Winnebago County area and is regulated by the Iowa Department of Natural Resources. Despite being classified with a low hazard potential, there is a moderate risk associated with the dam, prompting a need for ongoing risk management measures.

Owned and operated privately, Thorland Dam has not been rated for its condition, and its emergency action plan status is unknown. The dam does not have a controlled spillway and lacks outlet gates, with no associated structures or locks. Despite these limitations, the dam plays a crucial role in providing essential water resources for fire protection and recreational use in the area. With a drainage area of 0.18 square miles, the dam's surface area covers 6 acres, offering a valuable ecosystem for local wildlife.

In conclusion, Thorland Dam stands as a vital water resource structure in Winnebago County, Iowa, serving multiple purposes while facing moderate risk factors that necessitate ongoing management and assessment. As a key component in the local water infrastructure, the dam underscores the importance of sustainable management practices and regular inspection to ensure its continued efficacy and safety for the surrounding community and environment.