Generation And Giant Gaps (Tadpole To Colfax-Iowa Hill Road)


The gaps are still expert runs but the river has calmed down some (compared to the Royal Gorge).  There is still plenty of class IV and V to be had in here so this run is still for advanced boaters.

Suggested river levels for paddling this section of the American River, North Fork are between a bare minimum of 500cfs and a high of 2,500cfs. River conditions sourced from USGS 11427000, the Nf American R A North Fork Dam Ca Remember only watercraft are permitted at Generation and Giant Gaps (Tadpole to Colfax-Iowa Hill Road).

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
Tadpole Falls
Class V
Mumford Bar Ledge Rapid
Class IV+
Slide Rapid
Class IV to IV+
F-14
Class V-
Giant Gap Entrance Rapid
Class III+ to IV
Grater Rapid
Class IV to IV+
Nutcracker Rapid
Class IV to V-
Locomotive Rapid
Class IV+ to V
Dominator Rapid
Class V
Pinball Rapid
Class IV

Area Hydrology

Gauge Streamflow Stage
Little Truckee R Ab Boca Res Nr Truckee Ca
USGS 10344400
111 cfs 1.1 ft
Upper Truckee R At S Upper Truckee Rd Nr Meyers Ca
USGS 10336580
4 cfs 5.1 ft
Nf American R A North Fork Dam Ca
USGS 11427000
109 cfs 0.5 ft
Truckee R A Boca Bridge Nr Truckee Ca
USGS 10344505
427 cfs 6.4 ft
Up Truckee R A South Lake Tahoe Ca
USGS 10336610
24 cfs 3.6 ft
Little Truckee R Bl Div Dam Nr Sierraville Ca
USGS 10341950
3 cfs 1.0 ft
N Yuba R Bl Goodyears Bar Ca
USGS 11413000
227 cfs 2.3 ft
Blackwood C Nr Tahoe City Ca
USGS 10336660
8 cfs 8.3 ft
Independence C Nr Truckee Ca
USGS 10343000
4 cfs 2.4 ft
Eagle Rock Ck Nr Stateline
USGS 103367592
1 cfs 5.3 ft
Snotel Site Snowpack 24hr Change
black springs
SNOTEL BLSC1
0.47" 0.46"
bloods creek
SNOTEL BLCC1
0.87" 0.53"

Outdoor Recreation

Campground Campsites Reservations Toilets Showers Elevation
Hampshire Rocks 30 5,921 ft
Lake Spaulding 25 5,048 ft
Woodchuck 8 6,256 ft
Sterling lake- dispersed None 7,036 ft
Carr Lake 12 6,668 ft
McMurray None 5,880 ft
Donner Summit Area - Lake Spaulding 25 5,045 ft
Lindsey Lake 10 6,271 ft
Grouse Ridge 9 7,410 ft
Fuller Lake None 5,380 ft
Sterling Lake 8 7,023 ft
Robinson Flat 14 6,696 ft
Ski Area Snowpack Air Temperature 5 Day Forecast
Boreal Mountain Resort 24" 58° 0"
Alpine Meadows Ski Area 27" 56° 0"
Tahoe Donner 24" 58° 0"
Donner Ski Ranch 24" 58° 0"
Squaw Valley 33" 56° 0"
Sugar Bowl Resort 4" 64° 0"
Soda Springs 24" 58° 0"
River Run Streamflow Length Class
Yankee Jim Road to Ponderosa Way (Shirttail) 1390.0cfs 5.0 Mi II to III
Royal Gorge (Soda Springs to Tadpole Creek) 817.0cfs 25.0 Mi V to V+
Generation and Giant Gaps (Tadpole to Colfax-Iowa Hill Road) 1390.0cfs 26.8 Mi IV to IV+
Chili Bar 1390.0cfs 8.0 Mi III to IV
Tunnel Run (Ralston Powerhouse to Greenwood) 1390.0cfs 16.5 Mi IV- to IV
Coloma to Greenwood - (C to G) 1390.0cfs 5.0 Mi II to III-