Notice:Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake, Volcano, LANDSAT and Water information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted. For more information, please see www.doi.gov/shutdown.

Quality of Water Colorado River Basin

USGS station:

opens this link in a new window Go to NWISWeb
Constituent:
Time period:
Model Form:

At this site, real-time estimates of water quality depend on the availability of instantaneous discharge and specific conductivity measurements. During winter months, real-time water quality estimates may not be available for this site due to effects of ice.

Model Information

Specific conductance at 25 degrees Celsius is a direct measurement. It is not based on a regression model.

To see a regression model, please select a constituent that begins with "Computed."