Quality of Water Colorado River Basin
Real-time computed concentrations of water-quality constituents such as suspended sediment,
total nitrogen, and total phosphorus are calculated using ordinary least squares regression models.
The results of these models, along with direct water-quality measurements, can be viewed here
as time-series graphs, or downloaded as tabular data.
Ordinary least squares regression models on this site use conventional sensor measurements
(for example, discharge, temperature, pH, specific conductance, turbidity,
and dissolved oxygen) to compute concentrations and loads of other water-quality constituents
in real time. This makes it possible to compute instantaneous values of many constituents in
real time for public safety without the lengthy time delay of collecting a sample and waiting
for analysis of a sample at a laboratory.
Please select a site from below to start viewing data.
You also can read more about the methods, measured constituents, and disclaimers
by using the navigation bar at the top of each page.
Map Legend
|
Continuous Water-Quality Gage
|
|
Discontinued Continuous Water-Quality Gage
|
| Colorado River above Glenwood Springs, CO |
09071750 |
Garfield |
Jan. 2013 to present |
| Colorado River above Imperial Dam, AZ-CA |
09429490 |
Imperial |
Jan. 2014 to present |
| Colorado River at Lees Ferry, AZ |
09380000 |
Coconino |
Jan. 2013 to present |
| Colorado River below Glenwood Springs, CO |
09085100 |
Garfield |
Jan. 2014 to present |
| Colorado River below Hoover Dam, AZ-NV |
09421500 |
Clark |
Jan. 2014 to present |
| Colorado River Below Parker Dam, AZ-CA |
09427520 |
San Bernardino |
Jan. 2014 to present |
| Colorado River near Cameo, CO |
09095500 |
Mesa |
Jan. 2013 to present |
| Colorado River near Cisco, UT |
09180500 |
Grand |
Jan. 2013 to present |
| Colorado River near Grand Canyon, AZ |
09402500 |
Coconino |
Jan. 2013 to present |
| Dolores River near Cisco, UT |
09180000 |
Grand |
Jan. 2013 to present |
| Duchesne River near Randlett, UT |
09302000 |
Uintah |
Jan. 2013 to present |
| Green River at Green River, UT |
09315000 |
Emery |
Jan. 2013 to present |
| Green River near Green River, WY |
09217000 |
Sweetwater |
Jan. 2013 to present |
| Gunnison River near Grand Junction, CO |
09152500 |
Mesa |
Jan. 2013 to present |
| San Juan river near Bluff, UT |
09379500 |
San Juan |
Jan. 2013 to present |
| San Rafael River near Green River, UT |
09328500 |
Emery |
Jan. 2013 to present |
| Virgin River at Littlefield, AZ |
09415000 |
Mohave |
Jan. 2013 to present |
| White River near Watson, UT |
09306500 |
Uintah |
Jan. 2013 to present |
| Yampa River near Maybell, CO |
09251000 |
Moffat |
Jan. 2013 to present |
