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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 2021-10-13 2024-01-23
Inorganics, Major, Metals Water-quality 1969-08-25 1971-09-08
Inorganics, Major, Non-metals Water-quality 1969-08-25 1971-09-23
Inorganics, Minor, Non-metals Water-quality 1971-01-18 1971-09-08
Inorganics, Minor, metals Water-quality 1971-01-18 1971-09-08
Microbiological Water-quality 1970-10-27 1971-09-21
Nutrient Water-quality 1971-01-18 1971-09-08
Organics, pesticide Water-quality 1970-10-27 1971-09-07
Physical Daily Values, Unit Values, Water-quality 1969-08-25 2024-11-21
Radiochemistry Water-quality 1971-07-26 1971-07-26
Sediment Daily Values, Water-quality 2021-10-13 2024-11-20
n/a Peak Measurements 1960-12-07 2016-04-10
n/a Site Visits 1985-09-19 2024-10-23
n/a USGS Annual Water Data Reports Site 2006-01-01 2024-01-01
Water Data for the Nation inventory

Monitoring location 09429500 is associated with a Stream in Imperial County, California. Current conditions of Discharge, Gage height, and Mean water velocity for discharge computation are available. Water data back to 1960 are available online.

The elevation of this site is 133.24 feet above NAVD 1988. To convert gage height to stream water level elevation above NAVD 1988, add 133.24 feet to gage height values.
Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
09429500 n/a
Site name
COLORADO RIVER BELOW IMPERIAL DAM, AZ-CA n/a
Site type
Stream
ST
DMS latitude 325203.3 n/a
DMS longitude 1142819.6 n/a
Decimal latitude 32.86758333 n/a
Decimal longitude -114.472111 n/a
Latitude-longitude method
Mapping grade GPS unit (handheld accuracy range 12 to 40 ft) G
Latitude-longitude accuracy
Accurate to + or - 10 sec. T
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
Arizona 04
State
California 06
County
Imperial County 025
Country US n/a
Land net location description NWSWS09 T15S R24E S n/a
Name of location map n/a
Scale of location map n/a
Altitude of Gage/land surface 133.24 feet n/a
Method altitude determined GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System X
Altitude accuracy .22 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
15030107
Drainage basin
n/a
Topographic setting
Stream channel
C
Flags for instruments at site NYNNYNNNNNYNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
188500. square miles n/a
Contributing drainage area 184500. square miles n/a
Time Zone abbreviation MST n/a
Site honors Daylight Saving Time
N 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

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logo for USGS - Federal Priority Streamgages
USGS - Federal Priority Streamgages