Louie Lake, located in Valley County, Idaho, is a privately owned reservoir primarily used for irrigation purposes. Constructed in 1928, this earth dam structure stands at a height of 17.9 feet, with a hydraulic height of 15 feet and a storage capacity of 361 acre-feet. The dam is situated along Stella Creek and Wolf Lodge Creek and covers a surface area of 35 acres, serving a drainage area of 0.5 square miles.

Despite being classified as having a low hazard potential, Louie Lake is subject to state regulations and inspections to ensure its structural integrity and safety. The dam features an uncontrolled spillway with a width of 6 feet and outlet gates equipped with slide (sluice gate) mechanisms. The last inspection in July 2016 reported the dam's condition as fair, with a moderate risk assessment rating of 3. While the reservoir has not undergone any modifications in recent years, regular inspections are conducted every 5 years to monitor its overall condition and address any potential risks.

Louie Lake remains an essential water resource within the region, providing irrigation water for agricultural purposes. With its historical significance dating back to the early 20th century, this privately owned reservoir continues to play a vital role in water management and conservation efforts in Valley County, Idaho. Climate and water resource enthusiasts are drawn to the unique features of Louie Lake, including its earth dam structure and the surrounding natural landscape that contributes to the overall ecological diversity of the area.