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Whitewater River Run

California American River, Middle Fork

Greenwood To Mammoth Bar

Class II TO II+


83°, Sunny

The Greenwood to Mammoth Bar river run in California is a Class II-III run that spans approximately 9 miles. The river features several obstacles including a few Class III rapids, small drops, and rocky sections. The best time of year to float this section of water is from April to June when the water flow ranges from 800-1200 cfs. This section is not recommended for beginners and requires intermediate to advanced paddling skills.

Weather today, Sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the afternoon.

Status Runnable
Class Level II to II+
Elevation 717 ft
Run Length 7.0 Mi
Gradient 12 FPM
Streamflow Discharge 2330 cfs
Gauge Height 2.6 ft
Reporting Streamgage Nf American R A North Fork Dam Ca
USGS 11427000

Nearby Streamflow Levels

Gauge Streamflow Stage
American R A Fair Oaks Ca
USGS 11446500
13,500 cfs 11.2 ft
Pilot C Bl Mutton Canyon Nr Georgetown Ca
USGS 11433040
2 cfs 3.0 ft
Dry C A Vernon St Bridge A Roseville Ca
USGS 11447293
159 cfs 10.3 ft
Pilot C Ab Stumpy Meadows Res Ca
USGS 11431800
3 cfs 4.1 ft
Donner C A Donner Lk Nr Truckee Ca
USGS 10338500
143 cfs 3.9 ft
Nf American R A North Fork Dam Ca
USGS 11427000
2,490 cfs 2.7 ft
Sacramento R A Verona Ca
USGS 11425500
29,500 cfs 21.4 ft
Toe Drain A Liberty Island Nr Courtland Ca
USGS 11455140
144 cfs 6.6 ft
Deer C Nr Cameron Park Ca
USGS 11335655
8 cfs 3.6 ft
Snotel Site Snowpack 24hr Change

Popular Destinations

Campground Campsites Reservations Toilets Showers Elevation
Shirttail 30 3,943 ft
South Yuba 16 2,621 ft
Finnon Lake 14 2,427 ft
Peninsula - Folsom Lake State Rec Area 100 792 ft
White Cloud 46 4,377 ft
Giant Gap 35 3,686 ft
Bear River County Park 23 1,749 ft
Big Reservoir 19 4,161 ft
Mineral Bar - Auburn State Rec Area 18 1,167 ft
Rucky A Chucky - Auburn State Rec Area 5 723 ft
Dru Barner 47 3,237 ft
Skillman Horse Camp None 4,638 ft
Malakoff Diggins State Park None 3,461 ft
Nevada County Fairgrounds None 2,455 ft
Ski Area Snowpack Air Temperature 5 Day Forecast
River Run Streamflow Length Class

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