Top Discharges

Streamgauges reporting the most discharge on the Thornapple River

10 Day Trend

Discharge comparison for the highest gauges over the past 10 days

Expected Streamflow Ranges

Streamflow discharge range for this time of year

The Thornapple River (GNIS ID #1075813) is an 88.1-mile-long (141.8 km) tributary of Michigan's longest river, the Grand River. The Thornapple rises in Eaton County, Michigan and drains a primarily rural farming area in Central Michigan. It joins the Grand in Ada, Michigan, 10 miles (16 km) east of Grand Rapids. Source: Wikipedia