Spencer Dam, located in Pottawattamie County, Iowa, along the TR-PIGEON CREEK, was completed in 1966 for purposes such as fire protection, stock, and small fish pond management. This privately owned Earth dam stands at a height of 33 feet and spans 458 feet in length, with a storage capacity of 54 acre-feet. Despite being categorized as having a low hazard potential, its risk assessment is moderate due to its condition not being rated.

Managed by the Iowa Department of Natural Resources, Spencer Dam is subject to state jurisdiction, regulation, permitting, inspection, and enforcement. The dam was designed by the USDA NRCS and is situated in a picturesque location near Crescent, Iowa. While its spillway is uncontrolled, the dam's primary purpose serves as a vital resource for the local community, especially for fire protection and livestock management. With a risk management plan in place, Spencer Dam continues to play a crucial role in water resource management and climate adaptation efforts in the region.