Archived readingProvisional
Streamflow
8,070 ft^3/s
Observed Jul 20, 2026, 11:00 PM UTC at this station
river conditions
Colorado River at Lees Ferry conditions
The Colorado River at Lees Ferry is a major long-running monitoring point downstream of Glen Canyon Dam.
Official alerts require the production source connection
At representative stations
Water observations
Every value keeps its parameter, station, time, unit, source, and approval status.
Archived readingProvisional
Gage height
8.08 ft
Observed Jul 20, 2026, 11:00 PM UTC at this station
Archived readingProvisional
Water temperature
19.6 degC
Observed Jul 20, 2026, 11:00 PM UTC at this station
Archived readingProvisional
pH
8.2 pH
Observed Jul 20, 2026, 11:00 PM UTC at this station
Why these stations matter
Station relationships
A station is an observation point, not the whole waterbody.
Located on this waterbody0.0 mireviewed high
Colorado River at Lees Ferry, AZ
Primary USGS observation point on the Colorado River at Lees Ferry.
Relationship provenance: Official station identity and reviewed coordinate match.
Weather context
Separate from water data
Weather can help explain changing conditions, but a forecast is not a water observation. Production uses the National Weather Service feed and keeps the two clearly separated.
Check the official NWS forecastAbout this data
What this reading represents
Dam operations can change flow rapidly. The gauge is authoritative for its observation point but is not a route-specific navigation assessment.
Recorded observations may be provisional and can be revised by the source.
Read the methodologyContinue exploring
Nearby and related waters
Conditions are not a safety determination. A gauge reading cannot establish swimming, boating, ice, drinking-water, dam, or navigation safety. Check official alerts, local authorities, weather, and on-site conditions before acting.