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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 Daily Values, Unit Values 1930-10-01 2024-11-08
Physical Unit Values 2007-10-01 2024-11-08
n/a USGS Annual Water Data Reports Site 2005-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 11275500 is associated with a Lake, Reservoir, Impoundment in Tuolumne County, California. Current conditions of Lake or reservoir water surface elevation above NGVD 1929 and Reservoir storage are available. Water data back to 1930 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
11275500 n/a
Site name
HETCH HETCHY RES A HETCH HETCHY CA n/a
Site type
Lake, Reservoir, Impoundment
LK
DMS latitude 375652 n/a
DMS longitude 1194713 n/a
Decimal latitude 37.9476989 n/a
Decimal longitude -119.7879546 n/a
Latitude-longitude method
Interpolated from MAP. M
Latitude-longitude accuracy
Accurate to + or - 5 sec. F
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 NWNWS16 T01N R20E n/a
Name of location map n/a
Scale of location map n/a
Altitude of Gage/land surface n/a
Method altitude determined n/a
Altitude accuracy n/a
Altitude datum
n/a
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
455 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 NNNNNNNN 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 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