Dillon-Syltie-Boulton Dam/Porter Dam (1974)
This reservoir is located 1.5 miles south of Porter, Minnesota, in Section 9, Range 44W, Township 113N in Yellow Medicine County. The embankment stands 32 feet high to create a normal pool of 19 acres with 18 feet maximum depth. The construction costs including easement were $89,600. The reservoir is owned and maintained by the YMRWD with annual inspections conducted by the YMRWD, Area II, Lincoln SWCD, and NRCS. The reservoir provides floodwater retention, wildlife benefits, and fishing/recreation as it is open to the public for recreational or hunting purposes.