Class IVBitterroot Mountains, ID

Lochsa River

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1,480 CFS→
Too Low

About this run

The Lochsa is Idaho's great spring flood — a 50-mile corridor of continuous Class III-IV rapids tucked along US-12 in the Bitterroot Mountains. Snowmelt from the Clearwater Range turns this wilderness river into one of the country's best sustained high-volume runs from April through June. The gradient is relentless, the scenery is roadless wilderness, and nearly every bend brings another wave train or technical rapid. The Lochsa demands high-water skills and solid bracing — but rewards paddlers with mile after mile of world-class whitewater.

Known Hazards

  • Lochsa Falls — Class V, mandatory portage, scout carefully before approach
  • High volume above 10,000 CFS creates keeper hydraulics throughout
  • 50-mile corridor means committing to the run — no easy bailout points
  • Cold late-spring water (45-50°F) — dry suit mandatory

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Current Flow

1,480CFS→

stable

Too LowOptimal RangeHigh
Current1,480 CFS
Optimal Min3,000 CFS
Optimal Max10,000 CFS
StatusToo Low

7-Day Flow

07/071,520 CFS07/13

River Info

RegionBitterroot Mountains
StateID
DifficultyClass IV
USGS Gauge13337000
RunnableNo
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