of the Stream Monitoring Unit at the Duluth Ship Canal downstream
(lakeside) from the Duluth Aerial Lift bridge. The unit consists
of a PVC pipe mounted behind one of the safety ladders built
the sea wall and a YSI 6820 sonde and cable. The cable runs underground
into the Army Corps of Engineers building adjacent to the site.
We share a phone line with the USGS (station 464646092052900)
which operates an acoustical velocity meter (AVM) system with
a two-path transducer installation. The USGS supplies
real-time gage height and stream velocity on their web site and
we soon hope to use these data to present flow based water quality
graphs on WOW.
any of the thumbnails below to see how we installed the unit.