Barber Hollow Subwatershed Site 5-H-3865, located in Monona County, Iowa, is a dam primarily used for fire protection, stock, or small fish pond purposes. Constructed in 1967 by the USDA NRCS, this earth dam stands at a height of 30 feet and has a storage capacity of 22 acre-feet. Situated along the Little Sioux River, this dam plays a crucial role in flood risk reduction within the region.

With a drainage area of 0.23 square miles, Barber Hollow Subwatershed Site 5-H-3865 has a low hazard potential and is currently deemed to be in moderate risk based on a rating of 3. While the dam has not been rated for its condition assessment, it is subject to regulation, inspection, and enforcement by the Iowa Department of Natural Resources. Despite lacking certain emergency preparedness measures like an Emergency Action Plan (EAP) and inundation maps, this dam serves as a key infrastructure for water resource management in the area.

As water resource and climate enthusiasts, it is important to recognize the significance of structures like Barber Hollow Subwatershed Site 5-H-3865 in sustaining the local ecosystem and protecting against potential flooding events. This dam stands as a testament to proactive water management practices and the collaborative efforts of both local and federal agencies in ensuring the safety and resilience of communities in Monona County, Iowa.