Little Navajo 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: peak conflict Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO: 52 approved USGS daily values exceed that water year's USGS annual peak, in water year 1987 (e.g. 98 cfs on Oct 24, 1986 against a peak of 36). A day's mean cannot exceed the year's peak, so one of the two USGS records is wrong for those years; the daily values are kept.
Context (6)
Show 6 notes
- ended Discontinued gauges: 1 gauge has stopped reporting: Little Navajo River At Chromo, CO (last 1952). Their segments rest on fewer gauges after those years.
- fallback Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO: 46% of days come from usgs; codwr 54% fill days usgs does not cover, so the source changes within the record.
- flatline Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO: 8 runs of 30+ days at exactly the same flow: 2.0 cfs for 183 days from Oct 1, 1993; 2.0 cfs for 102 days from Jun 21, 1994; 1.2 cfs for 72 days from Dec 19, 1977. Below a dam this is usually a steady set release, which is real flow.
- gap Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO: 1 gap of 60+ days inside the record (66 days in all). Longest: Oct 1, 1996 to Dec 5, 1996 (66 days).
- flatline Little Navajo River At Chromo, CO: 5 runs of 30+ days at exactly the same flow: 3.2 cfs for 59 days from Jan 1, 1943; 2.0 cfs for 41 days from Dec 12, 1935; 8.0 cfs for 31 days from Dec 1, 1941. Usually an estimated period (ice, a broken gauge) rather than measured daily flow.
- zero run Little Navajo River At Chromo, CO: 1 run of 60+ days at zero flow; longest 85 days from May 18, 1946. Usually real (a dry channel or no release), not missing data.
Values removed (52)
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.
Show 52 removed values
| Gauge | Date | Source | cfs | Why |
|---|---|---|---|---|
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-02 | codwr | 43 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-03 | codwr | 52 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-04 | codwr | 52 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-05 | codwr | 53 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-06 | codwr | 45 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-07 | codwr | 44 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-08 | codwr | 43 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-09 | codwr | 40 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-10 | codwr | 42 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-11 | codwr | 54 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-12 | codwr | 53 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-13 | codwr | 50 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-14 | codwr | 51 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-15 | codwr | 54 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-16 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-17 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-18 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-19 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-20 | codwr | 59 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-21 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-22 | codwr | 52 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-23 | codwr | 51 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-24 | codwr | 98 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-25 | codwr | 47 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-26 | codwr | 45 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-27 | codwr | 44 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-28 | codwr | 42 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-29 | codwr | 40 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-30 | codwr | 39 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-10-31 | codwr | 40 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-01 | codwr | 54 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-02 | codwr | 59 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-03 | codwr | 59 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-04 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-05 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-06 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-07 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-08 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-09 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-10 | codwr | 55 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-11 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-12 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-13 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-14 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-15 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-16 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-17 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-18 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-19 | codwr | 56 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-20 | codwr | 51 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-21 | codwr | 47 | automatic: daily mean above that water year's USGS peak of 36 cfs |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | 1986-11-22 | codwr | 46 | automatic: daily mean above that water year's USGS peak of 36 cfs |
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 |
|---|---|---|---|---|---|
| Little Navajo River At Chromo, CO | Upper San Juan | codwr, usgs | 1935-06-03 | 1952-09-22 | 904 |
| Little Navajo Riv Bel L Oso Div Dam, Nr Chromo, CO | Upper San Juan | codwr, usgs | 1971-05-24 | 2026-10-26 | 2883 |