Republican River
Dundy / Harlan Co. · 420 mi · Class I
—CFS
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Optimal: 200–2000 CFS · USGS #06843500
⚡Flow data is live from USGS·Rapid classifications and CFS ranges need community verification··Know this river?
420 mi
Length
Class I
Difficulty
200–2000 cfs
Optimal
600 cfs
Avg Flow
540 cfs
Hist. Median
#06843500
USGS Gauge
Harlan County Reservoir Recreation Area

A 420-mile prairie canyon river cutting through southwestern Nebraska's rolling plains. The Republican carves surprisingly deep valleys through the loess hills, creating a hidden landscape of cottonwood-lined canyons and limestone bluffs. Rarely paddled and virtually unknown outside the region.

Trip sections
Upper Republican — Dundy Co. to McCook, 80 mi, narrow prairie canyon
McCook to Harlan County Reservoir — 100 mi, wider valley, deeper pools
Outfitters
Harlan County Reservoir Marina
Boat access, camping, local river information
72-Hour Flow Forecast
NOAA NWPS
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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.