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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.
Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Information Water-quality 2014-07-09 2016-09-01
Inorganics, Major, Metals Water-quality 2014-07-09 2014-07-09
Inorganics, Major, Non-metals Water-quality 2014-07-09 2014-07-09
Inorganics, Minor, metals Water-quality 2014-07-09 2014-07-09
Nutrient Water-quality 2014-07-09 2014-07-09
Organics, other Water-quality 2014-07-09 2014-07-09
Physical Daily Values, Unit Values, Water-quality 2006-10-12 2024-11-21
n/a Peak Measurements 2007-05-12 2024-05-18
n/a Site Visits 2006-10-18 2024-10-15
n/a USGS Annual Water Data Reports Site 2007-01-01 2024-01-01
Water Data for the Nation inventory

Monitoring location 11274790 is associated with a Stream in Tuolumne County, California. Current conditions of Discharge, Gage height, Specific conductance, and more are available. Water data back to 2006 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
11274790 n/a
Site name
TUOLUMNE R A GRAND CYN OF TUOLUMNE AB HETCH HETCHY n/a
Site type
Stream
ST
DMS latitude 375500 n/a
DMS longitude 1193932 n/a
Decimal latitude 37.9165884 n/a
Decimal longitude -119.6598938 n/a
Latitude-longitude method
Interpolated from MAP. M
Latitude-longitude accuracy
Accurate to + or - 1 sec. S
Latitude-longitude datum
North American Datum of 1927 NAD27
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
California 06
State
California 06
County
Tuolumne County 109
Country US n/a
Land net location description n/a
Name of location map HETCH HETCHY RES n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 3830 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 20 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
18040009
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
301 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation PST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
n/a
Data-other GW files n/a
National aquifer n/a
Local aquifer n/a
Local aquifer type
n/a
Well depth n/a
Hole depth
n/a
Source of depth data n/a
Project number 967700105 n/a

Operated in cooperation with:

logo for San Francisco Hetch Hetchy Water and Power, City and County of
San Francisco Hetch Hetchy Water and Power, City and County of