Rocky Arroyo (Upper Pecos-Black)
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 (2)
Show 2 notes
- fallback Rocky Arroyo At Hwy Brd Nr Carlsbad, NM: 73% of days come from usgs; usbr_hydrodata 27% fill days usgs does not cover, so the source changes within the record.
- zero run Rocky Arroyo At Hwy Brd Nr Carlsbad, NM: 63 runs of 60+ days at zero flow; longest 8,958 days from Jan 1, 1940; 1,084 days from Jul 30, 2010. Usually real (a dry channel or no release), not missing data.
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 |
|---|---|---|---|---|---|
| Rocky Arroyo At Hwy Brd Nr Carlsbad, NM | Upper Pecos-Black | nwps, usbr_hydrodata, usgs | 1940-01-01 | 2026-10-26 | 4531 |