Fridley Dam, located in Warren County, Iowa, was completed in 2001 and serves primarily for fire protection, stock, and small fish pond purposes. This private dam, designed by NRCS, stands at a height of 28 feet and has a length of 378 feet, with a normal storage capacity of 22 acre-feet. The dam is situated on TR- Otter Creek near RED ROCK RESERVOIR, with a low hazard potential and a moderate risk assessment rating.

Managed by the Iowa Department of Natural Resources, Fridley Dam is subject to state regulations, permitting, inspection, and enforcement. It is built with earth materials on a soil foundation and features an uncontrolled spillway with a width of 1 foot. The dam is positioned within the Kansas City District of the US Army Corps of Engineers and falls under the jurisdiction of the state and federal agencies.

Despite not having a condition assessment rating, Fridley Dam remains operational and plays a vital role in water resource management in the area. With its strategic location and purpose, this structure contributes to the overall ecosystem health and water supply sustainability in the region, making it a key asset for water resource and climate enthusiasts to monitor and study.