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North Dakota Real-time Water Quality


NRTWQ Home >> North Dakota >> Constituents

Constituents Measured or Computed Continuously in North Dakota

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 North Dakota. Click on a constituent for more detailed information, including a list of where it is measured or computed.

Constituent Name Units Criteria
Chloride milligrams per liter (mg/L)
Computed discharge cubic feet per second (cfs)
Dissolved solids milligrams per liter (mg/L)
Nitrate plus nitrite, dissolved milligrams per liter as nitrogen (mg/L-N)
Specific conductance at 25 degrees Celsius microsiemens per centimeter (uS/cm)
Sulfate milligrams per liter (mg/L)
Sulfate, dissolved milligrams per liter as sulfate (mg/L)
Suspended sediment concentration, water, unfiltered, estimated by regression equation milligrams per liter (mg/L)
Total phosphorus milligrams per liter as phosphorus (mg/L-P)
Turbidity, measured as NTU or FNU formazin nephelometric units (FNU)