Location of Gage :
Pool No. 21 extends from Quincy, IL. 18.3 river miles upstream to Canton, MO. Lock and Dam 21 is located 2.1 river miles downstream of the Quincy Highway 24 bridge. Access is via Lock and Dam Road off of Highway 57.
The National Weather Service information is also linked in the Additional Links for this station.
This gage is operated by the US Army Corps of Engineers (Rock Island District).