St. Louis River, the largest U.S. tributary to Lake Superior, drains
3,634 square miles, entering the southwestern corner of the lake between
Duluth, MN and Superior, WI. The river flows 179 miles through three
distinct areas; coarse soils, glacial till and outwash deposits at its
headwaters; a deep narrow gorge at Jay Cooke State Park; and red clay
deposits at its lower reaches.
As the river approaches Duluth and Superior
it takes on the characteristics of a 12,000 acre (4856 hectare) freshwater
estuary. While the upper part of the estuary has some wilderness-like
qualities, the lower portion is decidedly urban. The RUSS will be located
in this lower urban portion.
The WOW sampling equipment is located on the wall of the Duluth Ship
Canal. Data collected includes temperature, conductivity, and turbidity.
Thanks to the USGS, we are also able to get real-time discharge data.