Lamb Lower is a privately owned earth dam located in Natrona, Wyoming, serving primarily for irrigation purposes. Completed in 1952, this dam stands at a height of 28 feet and has a storage capacity of 121 acre-feet. Situated in the Big Muddy Oil Field, Lamb Lower plays a crucial role in supporting agricultural activities in the region by providing water for irrigation.

Despite being classified as having a low hazard potential, Lamb Lower received a fair condition assessment during its last inspection in August 2017. With an inspection frequency of 5 years, this dam is equipped with an uncontrolled spillway and a single valve outlet gate. The risk assessment for Lamb Lower indicates a moderate risk level, underscoring the importance of continued monitoring and maintenance to ensure its structural integrity and the safety of surrounding areas.

With its location in a critical drainage area and its proximity to Brushy Draw and Tributary Nigger Creek, Lamb Lower is a vital infrastructure for water resource management in the region. As climate change impacts water availability and extreme weather events become more frequent, the maintenance and upkeep of dams like Lamb Lower are essential for ensuring a reliable water supply for irrigation and other purposes in the area.