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Washington

Lost River

No verdict for this water

We won't guess. Here is exactly what we do and don't know.

What we do know

  • Inside Okanogan-Wenatchee National Forest

    3 managing-area boundaries mapped — agency alerts for them feed this page automatically.

    Boundary data

What's missing

  • No access route mapped

    We don't yet know which road reaches this trailhead, so we can't tell you if it's gated.

Nobody's filed a report here yet — be the first.

Why you'll love it

20.6 mi run
Seasonal — can run dry
305 cfs avg flow

River facts

Water
Seasonal — can run dry
Average flow
305 cfs
Average current
1.6 ft/s
Gradient
88.5 ft/mi
Drainage area
167 sq mi

Long-term averages modeled by USGS (NHDPlus HR), not today's conditions. Check a gauge before you go.

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Lost River

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Photos

Directions & GPX

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Permits & access

Managing agency
Forest Service

About this water

Lost River is a 21-mile paddling stretch near Mazama, Washington. It is intermittent and may run dry in some seasons. USGS models an average flow of about 305 cfs and a gradient of about 88.5 feet per mile. Land along it is managed by the U.S. Forest Service.

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