Chaco 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 (4)
Show 4 notes
- single gauge Chaco: 73% of this segment's weeks rest on a single gauge; the segment value is that gauge in those weeks, and jumps when other gauges join or drop out.
- zero run Chaco River Nr Burnham, NM: 5 runs of 60+ days at zero flow; longest 138 days from Oct 29, 1980; 93 days from Nov 30, 1981. Usually real (a dry channel or no release), not missing data.
- zero run Chaco River Nr Shiprock, NM: 2 runs of 60+ days at zero flow; longest 64 days from Oct 11, 2023; 62 days from Jun 25, 2025. Usually real (a dry channel or no release), not missing data.
- ended Discontinued gauges: 3 gauges have stopped reporting: Chaco River Nr Burnham, NM (last 1982); Chaco River Near Waterflow , NM (last 1994); Chaco River Nr Shiprock, NM (last 2025). Their segments rest on fewer gauges after those years.
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 |
|---|---|---|---|---|---|
| Chaco River Near Waterflow , NM | Chaco | usgs | 1975-11-03 | 1994-10-03 | 988 |
| Chaco River Nr Burnham, NM | Chaco | usgs | 1977-10-03 | 1982-10-11 | 263 |
| Chaco River Nr Shiprock, NM | Middle San Juan | usgs | 2023-09-11 | 2025-10-27 | 112 |