Talk:Lake Calumet

Are we sure about the statement that Lake Calumet no longer drains to Lake Michigan? The Thomas J. Obrien Lock and Dam are upstream from the lake and the article on the dam states the that side of the lock is at the level of Lake Michigan. The other side drains to the Des Plains River. — Preceding unsigned comment added by Rumpuscat (talk • contribs) 04:43, 7 February 2021 (UTC)