West Mancos River
Streamflow, conditions and background by watershed segment. Data through November 1, 2026.
Data gaps and disparities
Found automatically in the gauge records behind this river, and notes from a reviewer who checked them against other sources. Gauges need at least 26 weeks of daily data to appear on the Flow tab.
Warnings (0)
No warnings.
Context (3)
Show 3 notes
- ended Discontinued gauges: 1 gauge has stopped reporting: West Mancos River Near Mancos, CO (last 1953). Their segments rest on fewer gauges after those years.
- flatline West Mancos River Below Jackson Gulch Reservoir Inlet Cana: 1 run of 30+ days at exactly the same flow: 3.6 cfs for 57 days from Jan 16, 2012. Below a dam this is usually a steady set release, which is real flow.
- flatline West Mancos River Near Mancos, CO: 31 runs of 30+ days at exactly the same flow: 3.0 cfs for 71 days from Jan 1, 1939; 7.0 cfs for 64 days from Nov 29, 1943; 5.0 cfs for 62 days from Dec 1, 1945. Usually an estimated period (ice, a broken gauge) rather than measured daily flow.
Values removed (0)
A reading is removed automatically only when it is impossible (for example, a daily mean above the highest flow USGS recorded that water year). Low and zero flows are never removed: rivers here really do dry up.
None.
Gauges
Each row is one physical gauge; "published by" lists every agency copy that was merged into it.
| Gauge | Segment | Published by | First | Last | Weeks |
|---|---|---|---|---|---|
| West Mancos River Below Jackson Gulch Reservoir Inlet Cana | Mancos | codwr | 2005-01-24 | 2026-10-26 | 1136 |
| West Mancos River Near Mancos, CO | Mancos | codwr, usgs | 1938-10-03 | 1953-09-21 | 782 |