Lum Hollow Subwatershed 9-7697, located in Woodbury County, Iowa, is a key water resource managed by the local government for multiple purposes, including fire protection, stock, and small fish pond management. The dam, constructed in 1959, stands at 31 feet tall and spans 150 feet in length, with a storage capacity of 53 acre-feet. The primary source agency overseeing this dam is the Iowa Department of Natural Resources, ensuring state regulation, permitting, inspection, and enforcement are in place.

Managed by the USDA NRCS, Lum Hollow Subwatershed 9-7697 plays a crucial role in flood risk reduction within the area, with a low hazard potential identified. The dam's condition is yet to be rated, but its risk assessment indicates a moderate level of risk. Although the dam has not undergone recent inspection or assessment for emergency action plan preparedness, it meets state jurisdiction criteria and serves as a valuable asset for water resource and climate enthusiasts in the region. Its role in regulating water flow and managing water resources for various purposes underscores its importance in the local ecosystem.