Jalas Dam, located in Cherokee, Iowa, is a private-owned structure designed by USDA NRCS to serve multiple purposes including fire protection, stock, small fish pond, and recreation. Completed in 1965, this earth dam stands at 34 feet high and stretches 696 feet in length, with a storage capacity of 92 acre-feet. The dam, situated on TR-DOG CREEK, is regulated by the Iowa DNR and is inspected, permitted, and enforced by the state agencies to ensure its safety and compliance.

With a low hazard potential and a moderate risk assessment score of 3, Jalas Dam is considered to be in fair condition although not officially rated. The dam features an uncontrolled spillway with a width of 2 feet and has a surface area of 5.7 acres serving a drainage area of 0.57 square miles. While lacking certain detailed information such as the last inspection date or condition assessment, the dam's design and purpose highlight its significance in providing essential water resources for the local community while also supporting recreational activities in the area. Water resource and climate enthusiasts will find Jalas Dam to be an intriguing structure that plays a crucial role in water management and conservation efforts in Iowa's O'Brien County.