Located in Pottawattamie County, Iowa, the North Pigeon Creek Watershed Site M-4 is a vital component of the local water resource management system. Constructed in 1971 by the USDA NRCS, this earth dam serves multiple purposes, including fire protection, stock watering, and small fish pond maintenance. With a dam height of 51 feet and a storage capacity of 247 acre-feet, this structure plays a crucial role in flood risk reduction for the surrounding area.

Managed by the Iowa Department of Natural Resources, this dam is regulated, permitted, inspected, and enforced to ensure its safety and functionality. The risk assessment for this site indicates a moderate level of risk, with a low hazard potential. Despite not being currently rated for its condition, the North Pigeon Creek Watershed Site M-4 remains an essential asset for water resource and climate enthusiasts in the region, providing valuable water storage and management capabilities for the local community.

With a surface area of 8.7 acres and a drainage area of 0.54 square miles, this site contributes to the overall water quality and quantity in the area. As part of the larger water resource infrastructure in the region, this dam exemplifies the importance of sustainable water management practices and the need for ongoing maintenance and monitoring to ensure its long-term effectiveness in protecting the local environment and community from potential flooding events.