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California Real-time Water Quality

Constituents Measured or Computed Continuously in California

Continuous measurements of constituents (water-quality parameters) can be obtained by direct measurement using sensors, or by indirect computation using models.

Below is a list of constituents continuously measured or computed by the USGS in California. Click on a constituent for more detailed information, including a list of where it is measured or computed.

Constituent Name Units Criteria
Computed discharge cubic feet per second (cfs)
Dissolved solids milligrams per liter (mg/L)
Load dissolved solids tons per day (tons/day)
Specific conductance at 25 degrees Celsius microsiemens per centimeter (uS/cm)
Suspended sediment concentration, water, unfiltered, estimated by regression equation milligrams per liter (mg/L)
Turbidity, measured as NTU or FNU formazin nephelometric units (FNU)

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URL: http://nrtwq.usgs.gov/ca/constituents/
Page Contact Information: National Real-Time Water Quality Information
Page Last Modified: Wed 06 October 2010