Island Lake 4 Dam (2009)
This dam is located 10 miles west of Marshall, Minnesota, in Section 4, Range 43W, Township 111N in Lyon County. The embankment stands 41.0 feet high creating a normal pool of 6.2 acres with 34 feet maximum depth. Construction costs including easement were $170,872.60. The reservoir, owned and maintained by the property owner, provides floodwater retention, wildlife benefits, and fishing/ recreation, and is not open to the public for recreational or hunting purposes.