Tuolumne - 2) Hetch Hetchy to Early Intake


Tuolumne, California, US

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2) Hetch Hetchy to Early Intake (Poopenaut Valley)

Usual Difficulty V (for normal flows)

Gauge Information

Name Range Difficulty Updated Level
TUOLUMNE R AB EARLY INTAKE NR MATHER CA
usgs-11276600 200 - 600 cfs V 00h40m 69 cfs (rc= -0.3 )


River Description

Messages  at Boof.com imply that this section has had exploratory descents, but otherwise there has been very little information about this section of river.  It was kayaked in 2008 and a trip report is linked below. 

Aerial photos on the map tab show that much of this section is low gradient separated by usually short sections of falls or cascades.    One long section of boulders and cascades squeezed between major cliffs, appears to be a significant obstacle.  

Take out:  Early Intake is only a few miles away from Holm Powerhouse, the put in for the regular Cherry creek run.   From Highway 120 near Colfax Spring, find the Cherry Lake Rd, (Forest Rd 1N07).     It is unclear if the best take-out is on the small reservoir at Early Intake or upstream near where the road makes a switchback.   google map.

Put in:   From the take out, backtrack a short ways to Forest Rd. 1S02, Mather Road.    Take this road east through Mather to Hetch Hetchy.   There is a parking lot near the dam.   From the dam side of the parking area, a dirt road leads back downstream to a bridge over the river.    This road may be gated.  google map.

Other Information Sources:

Poopenaut Gorge of the Tuolumne V-V+ (P)  Trip report at Jefferson State Creeking.  
HETCH HETCHY:    Panoramic Photos of Hetch Hetchy from the dam and nearby.
Restore Hetch Hetchy    An organization working to remove the dam and restore the valley of Hetch Hetchy.
Photo Tour of Hetch Hetchy   By Betsy Malloy at About.com
Yosemite Park:  Tuolumne River/Tuolumne Meadows Plan

2008 Tuolumne Planning Workbook page

    Comments due Sept. 15, 2008

There are ongoing biological studies being conducted by Hetch Hetchy Water and Power.  Study information

 


StreamTeam Status: Not Verified
Last Updated: 2009-08-30 19:00:35

O'Shaughnessy Dam, Hetch Hetchy

Detail Trip Report  O'Shaughnessy Dam, Hetch Hetchy  Tuolumne, CA(4.24MB .jpeg)


Gauge Information

Gauge Description:

Hetch Hetchy reservoir spills during the spring of many years.   Most spill flows will probably be too high for boating in this section, so your best bet will be at the very beginning and the very end of spill.    There is a USGS gauge available for this section.    Ben Stookesbury reported after a 2008 trip that he would have prefered more than 200 cfs, but not a lot more. 


Gauge Information

Name Range Difficulty Updated Level
TUOLUMNE R AB EARLY INTAKE NR MATHER CA
usgs-11276600 200 - 600 cfs V 00h40m 69 cfs (rc= -0.3 )

RangeWater LevelDifficultyComment
200 - 600 cfs barely runnable-high runnable V

Report - Reports of Tuolumne 2) Hetch Hetchy to Early Intake and related gauges

Reports give the public a chance to report on river conditions throughout the country as well as log the history of a river.

Reports

When River/Gauge Subject Level Reporter
2y338d11h23m Tuolumne [CA] O'Shaughnessy Dam, Hetch Hetchy n/a Thomas O'Keefe

WXPort

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 2) Hetch Hetchy to Early Intake, Tuolumne California, US (mobile)