Mancos River

Last Updated: April 25, 2026

Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Mancos River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Mancos River, the highest being situated at an altitude of ft, the .

The Mancos River is located in southwest Colorado and runs for approximately 80 miles.


15-Day Long Term Forecast


       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Mancos River Near Towaoc
USGS 09371000
0 cfs 1.43 ft None
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Mancos River, formerly also El Rio de San Lazaro, is an 85.4-mile-long (137.4 km) northeast tributary of the San Juan River. It flows from the confluence of West Mancos River and East Mancos River near Mancos, Colorado and joins the San Juan near Four Corners Monument in New Mexico.The river was named after an incident during which a horse rider hurt his hand while crossing, the word Mancos being derived from Spanish meaning "one-armed".