Constituents Measured or Computed Continuously in Pennsylvania
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 Pennsylvania. 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) | |
| Fecal coliform bacteria | colonies per 100 milliliters (cfu/100mL) | |
| Suspended sediment concentration, water, unfiltered, estimated by regression equation | milligrams per liter (mg/L) | |
| Turbidity, measured as NTU or FNU | formazin nephelometric units (FNU) |