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Boise River - Arrowrock Reservoir

Idaho • 43.6028, -115.8944
Length
103 mi
166 km
Elevation
3,481′ → 2,191′
1,290 ft drop
Stream Order
8
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
Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

EPA WQP MyWaterway
Data from USGS & NOAA for informational purposes only. More
Monitor

Water Level Gauges on Boise River - Arrowrock Reservoir

There are 9 USGS water level monitoring stations on Boise River - Arrowrock Reservoir providing real-time flow and stage data.

Access Sites on Boise River - Arrowrock Reservoir

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