Tunnel Run (Ralston Powerhouse To Greenwood)


For those without the skill or equipment to run this on their own, this could be one of the best commercial trips in CA.  This area is not nearly as crowded as the South Fork but still offers year round boating due to dam controlled flows coming out of the Oxbow reservoir.

Suggested river levels for paddling this section of the American River, Middle Fork are between a bare minimum of 700cfs and a high of 3,000cfs. River conditions sourced from USGS 11427000, the Nf American R A North Fork Dam Ca Remember only watercraft are permitted at Tunnel Run (Ralston Powerhouse to Greenwood).

Disclaimer: Snoflo assumes no responsibility for errors or omissions in any of the content found here. You, the user assumes the entire risk associated with use of this data and content. terms of service

Whitewater Rapids

Obstacles on the river run
Panic Alley Rapid
Class III
Last Chance Rapid
Class III
Tunnel Chute
Class IV+
Kanaka Falls (Cartwheel Rapid)
Class IV
Upper Ruck-A-Chucky (Chunder) Rapid
Class IV- to IV
Ruck-A-Chucky
Class V+ to VI
Lower Ruck-A-Chucky
Class III+ to IV
Driver's Ed Rapid
Class III to IV
Catapult Rapid
Class III to IV-
Shareen's Dream Rapid
Class III+

Area Hydrology

Gauge Streamflow Stage
Donner C At Hwy 89 Nr Truckee Ca
USGS 10338700
34 cfs 3.0 ft
Deer C Nr Smartville Ca
USGS 11418500
7 cfs 1.4 ft
Truckee R Nr Truckee Ca
USGS 10338000
564 cfs 2.7 ft
Sagehen C Nr Truckee Ca
USGS 10343500
7 cfs 1.8 ft
Unnamed Trib Bl Gavin Mandry Dr Nr Marysville Ca
USGS 11424546
8 cfs 0.0 ft
Cosumnes R A Michigan Bar Ca
USGS 11335000
199 cfs 3.4 ft
Pilot C Ab Stumpy Meadows Res Ca
USGS 11431800
3 cfs 4.1 ft
Pilot C Bl Mutton Canyon Nr Georgetown Ca
USGS 11433040
2 cfs 3.0 ft
Unnamed Trib Ab Gavin Mandry Dr Nr Marysville Ca
USGS 11424548
0 cfs 0.7 ft
Laguna C Nr Elk Grove Ca
USGS 11336585
1 cfs 2.8 ft
Snotel Site Snowpack 24hr Change
alpha
SNOTEL ALPHA_MADIS
162.28" 0.19"
Independence Creek
SNOTEL 540
1" 0"
Rubicon #2
SNOTEL 724
25" -1"
Css Lab
SNOTEL 428
27" -1"
black springs
SNOTEL BLSC1
41.03" 1.49"
Truckee #2
SNOTEL 834
5" -1"
Independence Camp
SNOTEL 539
5" -2"
blue canyon alert
SNOTEL BLUC1
0.28" 0"
Independence Lake
SNOTEL 541
60" -3"
Squaw Valley G.C.
SNOTEL 784
38" 0"
soda springs 1.5 ssw, ca
SNOTEL CA-PC-1
23.72" -2.83"
Ward Creek #3
SNOTEL 848
37" -1"
alpine meadows-base
SNOTEL AMBC1
47.65" 0.47"

Outdoor Recreation

Campground Campsites Reservations Toilets Showers Elevation
Giant Gap 35 3,686 ft
Ponderosa Cove 18 4,293 ft
Finnon Lake 14 2,427 ft
Shirttail 30 3,943 ft
Dru Barner 47 3,237 ft
Big Reservoir 19 4,161 ft
Ski Area Snowpack Air Temperature 5 Day Forecast
River Run Streamflow Length Class
Tunnel Run (Ralston Powerhouse to Greenwood) 642.0cfs 16.5 Mi IV- to IV
Yankee Jim Road to Ponderosa Way (Shirttail) 642.0cfs 5.0 Mi II to III
Coloma to Greenwood - (C to G) 560.0cfs 5.0 Mi II to III-
Chili Bar 560.0cfs 8.0 Mi III to IV
Generation and Giant Gaps (Tadpole to Colfax-Iowa Hill Road) 560.0cfs 26.8 Mi IV to IV+
Greenwood to Mammoth Bar 560.0cfs 7.0 Mi II to II+