Louisa Creek is a privately owned water resource located in Owyhee, Idaho, with a dam completed in 1931 for purposes other than irrigation or drinking water supply. The dam is a concrete structure with a multi-arch core type and stands at a height of 41 feet, with a hydraulic height of 38 feet. The reservoir has a storage capacity of 175 acre-feet and covers a surface area of 9 acres, serving a drainage area of 8.2 square miles.

Despite its low hazard potential, Louisa Creek's dam is currently in poor condition, with a risk assessment rating of moderate. The last inspection in June 2019 highlighted the need for improvement, with an inspection frequency of 4 years. The dam features an uncontrolled spillway with a width of 3 feet and a maximum discharge of 30 cubic feet per second. While the risk management measures and emergency action plan status are unknown, the dam's location and structural specifications make it a valuable resource for water resource and climate enthusiasts interested in Idaho's hydrological infrastructure.

Overall, Louisa Creek represents a historic and functional water resource in Idaho, standing as a testament to early 20th-century engineering and serving as a vital component of the local watershed. With its unique design and operational characteristics, the dam provides a fascinating glimpse into the intersection of human intervention and natural water systems, making it a point of interest for those interested in water resource management and climate resilience in the region.