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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 2016-04-05 2017-08-17
Physical Daily Values, Unit Values, Water-quality 2010-10-01 2024-11-21
n/a Peak Measurements 2012-04-13 2022-12-31
n/a Site Visits 2010-10-05 2024-07-26
n/a USGS Annual Water Data Reports Site 2011-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 11172955 is associated with a Stream in Alameda County, California. Current conditions of Discharge, Gage height, Stream water level elevation above NAVD 1988, and more are available. Water data back to 2010 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
11172955 n/a
Site name
ALAMEDA C BL DIV DAM NR SUNOL CA n/a
Site type
Stream
ST
DMS latitude 372955 n/a
DMS longitude 1214646 n/a
Decimal latitude 37.4986111 n/a
Decimal longitude -121.7794444 n/a
Latitude-longitude method
Interpolated from Digital MAP. N
Latitude-longitude accuracy
Accurate to + or - 1 sec. S
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
California 06
State
California 06
County
Alameda County 001
Country US n/a
Land net location description SWNES17 T05S R02E M n/a
Name of location map CALAVERAS RESERVOIR n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 835.55 feet n/a
Method altitude determined GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System X
Altitude accuracy .16 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
18050004
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
34.9 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 9677-00102 n/a

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San Francisco Public Utilities Commission