Barcal Dam, located in Sioux City, Iowa, was completed in 1959 by the USDA NRCS and serves multiple purposes including fire protection, stock, and a small fish pond. With a height of 49 feet and a length of 516 feet, this earth dam has a storage capacity of 83 acre-feet and covers a surface area of 4.6 acres. The dam is regulated by the Iowa Department of Natural Resources and has a low hazard potential, with a moderate risk assessment rating.

Situated on TR-ROCK CREEK, the Barcal Dam is owned privately and is subject to state regulations, inspections, and enforcement. The dam's design and construction were funded by the Natural Resources Conservation Service, and it is primarily used for agricultural and recreational purposes. Despite being in operation for over six decades, the dam's condition assessment remains unrated, with the last inspection conducted in 1964.

In the event of an emergency, the dam's preparedness measures, such as an Emergency Action Plan and updated contact information, are not currently documented. With its strategic location and vital role in water resource management, the Barcal Dam stands as a testament to sustainable infrastructure development and the importance of proper maintenance and oversight in ensuring the safety and functionality of water resources in the region.