Piedra 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 (1)
- warning: gap Piedra R At Bridge Rngr Sta, Nr Pagosa Spgs, CO: 1 gap of 60+ days inside the record (1,734 days in all). Longest: Oct 1, 1941 to Jun 30, 1946 (1,734 days).
Context (6)
Show 6 notes
- ended Discontinued gauges: 3 gauges have stopped reporting: Piedra River Near Dyke, CO (last 1940); Piedra R At Bridge Rngr Sta, Nr Pagosa Spgs, CO (last 1954); Piedra River Near Piedra, CO (last 1973). Their segments rest on fewer gauges after those years.
- single gauge Piedra: 77% 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.
- flatline Piedra R At Bridge Rngr Sta, Nr Pagosa Spgs, CO: 18 runs of 30+ days at exactly the same flow: 21.0 cfs for 51 days from Dec 12, 1949; 26.0 cfs for 32 days from Nov 30, 1940; 32.0 cfs for 31 days from Oct 1, 1936. Usually an estimated period (ice, a broken gauge) rather than measured daily flow.
- copy disagree Piedra River Near Arboles, CO: The nwps copy agrees on the median but differs by more than 10% on 27% of 75 shared days (often provisional vs approved data, or a different daily averaging window). The report takes 2 days from nwps where usgs is missing, so the level can shift there.
- flatline Piedra River Near Dyke, CO: 1 run of 30+ days at exactly the same flow: 80.0 cfs for 31 days from Oct 1, 1939. Usually an estimated period (ice, a broken gauge) rather than measured daily flow.
- flatline Piedra River Near Piedra, CO: 1 run of 30+ days at exactly the same flow: 80.0 cfs for 31 days from Oct 1, 1939. 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 |
|---|---|---|---|---|---|
| Piedra R At Bridge Rngr Sta, Nr Pagosa Spgs, CO | Piedra | codwr, usgs | 1936-09-28 | 1954-09-27 | 692 |
| Piedra River Near Arboles, CO | Piedra | codwr, nwps, usgs | 1962-09-03 | 2026-10-26 | 3342 |
| Piedra River Near Piedra, CO | Piedra | codwr, usgs | 1939-10-02 | 1973-06-25 | 1761 |
| Piedra River Near Dyke, CO | Piedra | codwr | 1939-10-02 | 1940-09-23 | 52 |