River MI

Thornapple River

Michigan • 42.8833, -85.4167

Length

94 mi

151 km

Elevation

921′ → 614′

307 ft drop

Stream Order

Large River

Slope

0.06%

3.3 ft/mi

Drainage

814 mi²

2,108 km²

Avg Flow

853 cfs

1.5 mph velocity

Path to Mouth

2,018 mi

3,247 km to ocean

Classification

Headwater

Source Stream

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

Monitor

Water Level Gauges on Thornapple River

There are 2 USGS water level monitoring stations on Thornapple River providing real-time flow and stage data.

There are 3 boat ramps, launches, and public access points on Thornapple River.