River OR ID

Boise River - Arrowrock Reservoir

Oregon • 43.6028, -115.8944

Length

103 mi

166 km

Elevation

3,481′ → 2,191′

1,290 ft drop

Stream Order

Major River

Slope

0.24%

12.5 ft/mi

Drainage

6,272 mi²

16,244 km²

Avg Flow

2,884 cfs

3.8 mph velocity

Path to Mouth

822 mi

1,322 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Data from USGS & NOAA for informational purposes only. More

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Access Sites on Boise River - Arrowrock Reservoir

There are 2 boat ramps, launches, and public access points on Boise River - Arrowrock Reservoir.