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 00h38m 63.2 cfs (too low)

gauge graph
RangeWater LevelDifficultyComment
200 - 600 cfs barely runnable-high runnable V gauge is important or has warning

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

When River/Gauge Subject Level Reporter
> 10 years Tuolumne [CA] O'Shaughnessy Dam, Hetch Hetchy n/a Thomas O'Keefe