Gauges on the site show readings from the main stem near Michigan Avenue, the North Branch near Goose Island and the South Branch near the Studio Gang-designed Eleanor Boathouse in Bridgeport. Although the site says it’s not meant to evaluate the biological safety of the river, depending on what sensors are picking up, assessments can range from good, meaning bacteria levels are likely within the recreational standards for water quality, to high caution, when swimming, for example, would not be considered safe.
