Loon Lake Twp 16, located in Cass County, Minnesota, is a state-regulated dam with a primary purpose of "Other." Built in 1978 and designed by the NRCS, this rockfill dam stands at a height of 10 feet and stretches 160 feet in length along Mayo Creek. It has a storage capacity of 1000 acre-feet and a low hazard potential rating.

Despite its poor condition assessment in 2015, the dam remains under state jurisdiction and is subject to regular inspections, enforcement, and permitting by the Minnesota Department of Natural Resources, Environmental & Water Resources division. With a drainage area of 5 square miles and a maximum discharge rate of 339 cubic feet per second, this dam plays a vital role in managing water resources in the surrounding area.

For water resource and climate enthusiasts, Loon Lake Twp 16 serves as a fascinating case study in dam infrastructure and regulation. Its location in the St. Paul District, along with its historical significance and ongoing management, make it a valuable asset in understanding the intersection of water management, environmental protection, and public safety in the state of Minnesota.