The Pokegama Dam is located on the Mississippi River, three miles upstream of Grand Rapids. Construction began at this damsite in 1882 and the dam was put into operation in 1885. The Corps of Engineers completed reconstruction in concrete in 1904. Pokegama is considered the distributing reservoir for the two upper reservoirs at Winnibigoshish and Leech, the water from which passes through this dam.
The current control structure is 225 feet long and contains 13 8-foot sluiceways and one 12-foot long log sluice. In 2011, 7 leaf gates were installed and the slide gates in the remaining sluiceways were rebuilt. A leaf gate was also installed in the log sluice bay. The earth-filled embankments have timber diaphragms filled with puddled clays, and rest on the quartzite outcrop that occurs in this area.
Eleven buildings were first erected at the start of construction of the original timber dam. In 1909, a temporary dam tender’s dwelling was replaced with a 2 ½-story dwelling that had plumbing and a hot-air furnace, the first dam tender’s dwelling to be so equipped at the time of construction.
A one-story office was constructed on this site in 1909. The stylish clapboard-clad building featured a flared hip roof and an eyebrow dormer.
Mississippi River Headwaters History brochure