Ontonagon, Michigan, US

Hwy.45 to Ontonagon (20 miles)

Gauge Information

Name	Range	Difficulty	Updated	Level
ONTONAGON RIVER NEAR ROCKLAND, MI
usgs-04040000	500 - 5000 cfs	I(II)	58d04h34m	723 cfs (rc= 0.0 )
	Likely good boatable flows. (We need your comments and reports to refine description and recommended flows.) Cited gauge (1,340 sq.mi. drainage) is right at the put-in for this reach, therefore should very accurately represent flows in this reach.

River Description

Canoe tripping run (20 miles, at only 3 FPM average gradient). It may be possible to shorten the run a bit using alternate accesses.

"Grand Rapids" (at Lat/Lng 46.7640, -89.2717) is the whitewater highlight of the run.

USGS aerial image resolution on Google is quite good. Go to the 'Map' tab, click 'USGS Aerial', and double-click near (not 'on') any of the markers on the river (put-in, take-out, or Grand Rapids), then zoom in to maximum resolution, and do a 'virtual walk' of the river.