Maumee River
Allen / Defiance Co. · 137 mi · Class Riffles
13,400CFS/ 6.02 ft
Flood
Falling fast (-500 cfs/hr)· -600 cfs in 3h
Water temp: 53°F — Hypothermia risk, wear a drysuit
Optimal: 1000–5000 CFS · USGS #04193500
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
137 mi
Length
Class Riffles
Difficulty
1000–5000 cfs
Optimal
2,800 cfs
Avg Flow
2,520 cfs
Hist. Median
#04193500
USGS Gauge
Side Cut Metropark · Farnsworth Metropark · Maumee River Water Trail

The largest river by volume flowing into the Great Lakes — the Maumee drains a vast agricultural watershed across northwest Ohio and northeast Indiana before emptying into Lake Erie at Toledo. The river offers big-water flatwater paddling through the Great Black Swamp region. The annual walleye run below the rapids in Maumee and Perrysburg draws anglers from across the Midwest.

Trip sections
Defiance to Napoleon — 30 mi, upper river, scenic bluffs
Napoleon to Grand Rapids — 25 mi, prairie corridor
Grand Rapids to Toledo — 20 mi, rapids section, walleye water
72-Hour Flow Forecast
NOAA NWPS
Loading forecast...
10-Year Flow Patterns
See 10 years of flow patterns for this river — historical analysis is a Pro feature.Upgrade to Pro →
Your Optimal Range
Set your personal optimal CFS window per river — custom ranges are a Pro feature.Upgrade to Pro →
Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and trip sections may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level. If you spot an error, use the Improve This River button at the top of the page — your local knowledge is what makes this atlas accurate.