Flynn Reservoir, located in Adel, Oregon, is a private water resource managed by the Oregon Water Resources Department. Built in 1949, this earth dam stands at a height of 16 feet and has a storage capacity of 252 acre-feet, primarily used for irrigation purposes. The reservoir spans 44.5 acres with a maximum discharge of 92 cubic feet per second, drawing water from Mapes Creek.

Despite its age, Flynn Reservoir has a low hazard potential and has not been rated for condition assessment. The dam features a slide gate outlet and has undergone regular inspections, with the last one conducted in August 2018. With a drainage area of 6.41 square miles, the reservoir plays a crucial role in water management and agriculture in the region, ensuring a stable water supply for irrigation purposes.

Located in Lake County, Oregon, Flynn Reservoir serves as a vital water source for the surrounding area, supporting agricultural activities and ensuring water security. Managed by private owners, this reservoir stands as a testament to effective water resource management and plays a crucial role in sustaining the local ecosystem and economy. With its strategic location and reliable water supply, Flynn Reservoir remains a key asset in the region's water infrastructure network.