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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
Biological Water-quality 1974-06-12 1981-09-21
Information Water-quality 1964-11-05 2024-02-13
Inorganics, Major, Metals Water-quality 1971-10-06 2023-10-10
Inorganics, Major, Non-metals Daily Values, Unit Values, Water-quality 1971-10-06 2024-11-21
Inorganics, Minor, Non-metals Water-quality 1971-10-06 2018-05-17
Inorganics, Minor, metals Water-quality 1971-10-06 2023-10-10
Microbiological Water-quality 1971-10-14 2018-05-17
Nutrient Water-quality 1971-10-06 2023-08-08
Organics, PCBs Water-quality 1972-10-19 1986-08-19
Organics, other Water-quality 1974-05-15 2000-08-23
Organics, pesticide Water-quality 1972-08-16 2000-08-23
Physical Daily Values, Unit Values, Water-quality 1971-10-01 2024-11-21
Population/Community Water-quality 1974-10-09 1981-09-21
Radiochemistry Water-quality 1964-11-05 2000-08-23
Sediment Water-quality 1996-08-19 2022-05-17
Stable Isotopes Water-quality 1980-11-04 2000-08-23
n/a USGS Annual Water Data Reports Site 2006-01-01 2024-01-01
Water Data for the Nation inventory

Monitoring location 09429490 is associated with a Stream in Imperial County, California. Current conditions of Dissolved oxygen, Dissolved solids, Specific conductance, and more are available. Water data back to 1964 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
09429490 n/a
Site name
COLORADO RIVER ABOVE IMPERIAL DAM, AZ-CA n/a
Site type
Stream
ST
DMS latitude 325305.77 n/a
DMS longitude 1142805.20 n/a
Decimal latitude 32.8849361 n/a
Decimal longitude -114.468111 n/a
Latitude-longitude method
Interpolated from Digital MAP. N
Latitude-longitude accuracy
Accurate to + or - .5 sec (PLGR/PPS GPS). 5
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 S09 T15S R24E n/a
Name of location map IMPERIAL RESERVOIR n/a
Scale of location map 24000 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
15030104
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site YNNNYNNNNNYNNNNNNNNNNNNNNNNNNN 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 CHI n/a