Grassy Lake, located in Orangeville, Utah, is a federal-owned reservoir primarily used for irrigation purposes. Built in 1945 by the USDA NRCS, this Earth-type dam stands at 18 feet high and spans 620 feet in length. With a storage capacity of 190 acre-feet, it serves as a vital water resource for the surrounding agricultural land, with a normal storage level of 132 acre-feet.

Situated on Little Creek, Grassy Lake boasts a surface area of 11 acres and a drainage area of 0.5 square miles. Despite its relatively small size, the reservoir plays a crucial role in water management in the region. With a low hazard potential and a moderate risk assessment rating, Grassy Lake is a key component of the local water infrastructure, providing essential water supply for irrigation while maintaining a safe and reliable operation.

Managed by the Natural Resources Conservation Service, Grassy Lake has not been recently inspected, but its condition is reported as "Not Available." With a valve outlet gate and an uncontrolled spillway, the reservoir is equipped to handle potential overflow events. While lacking specific details on emergency action plans and risk management measures, Grassy Lake remains a valuable asset for water resource and climate enthusiasts interested in sustainable water management practices.