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Au Sable River at Mio, MI
Latest discharge: 897 cfs (provisional) at .
Latest gage height: 3.03 ft (provisional) at .
The Au Sable gauge at Mio. USGS site 04136500 (AU SABLE RIVER AT MIO, MI). Open the USGS gauge.
We email once when a fresh USGS reading crosses your line. If it's already past the line, we wait for it to come back and cross. After an alert we stay quiet until the reading moves back past the line by a small margin. Ice, missing, seasonal, or 6-hour-old readings don't count. Provisional readings are labeled in the email.
New to flow numbers? Fly Fishing for Nerds on reading river flows and water temperature for trout.