Trinchera Creek
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 (2)
- warning: gap Trinchera C Ab Mtn Home Re, Nr Fort Garland, CO: 13 gaps of 60+ days inside the record (2,214 days in all). Longest: Oct 1, 1956 to Sep 30, 1958 (730 days); Nov 1, 1932 to Mar 31, 1933 (151 days); Nov 1, 1934 to Mar 31, 1935 (151 days).
- warning: gap Trinchera Creek Below Smith Res, Nr Blanca, CO: 6 gaps of 60+ days inside the record (2,310 days in all). Longest: Oct 1, 1938 to Sep 30, 1942 (1,461 days); Oct 1, 1931 to Sep 30, 1932 (366 days); Nov 1, 1929 to Mar 31, 1930 (151 days).
Context (9)
Show 9 notes
- ended Discontinued gauges: 1 gauge has stopped reporting: Trinchera Creek At The Seyfried Splitter (last 2022). Their segments rest on fewer gauges after those years.
- fallback Trinchera C Ab Mtn Home Re, Nr Fort Garland, CO: 29% of days come from usgs; codwr 71% fill days usgs does not cover, so the source changes within the record.
- flatline Trinchera C Ab Mtn Home Re, Nr Fort Garland, CO: 63 runs of 30+ days at exactly the same flow: 7.0 cfs for 79 days from Dec 9, 1942; 6.0 cfs for 62 days from Dec 1, 1937; 4.5 cfs for 62 days from Dec 1, 1939. Usually an estimated period (ice, a broken gauge) rather than measured daily flow.
- fallback Trinchera C Ab Turners Ranch, Nr Ft Garland, CO: 55% of days come from usgs; codwr 27%, usace_cwms 18% fill days usgs does not cover, so the source changes within the record.
- flatline Trinchera C Ab Turners Ranch, Nr Ft Garland, CO: 75 runs of 30+ days at exactly the same flow: 5.0 cfs for 62 days from Dec 1, 1934; 7.0 cfs for 62 days from Dec 1, 1937; 6.0 cfs for 62 days from Dec 1, 1939. Usually an estimated period (ice, a broken gauge) rather than measured daily flow.
- gap Trinchera C Ab Turners Ranch, Nr Ft Garland, CO: 10 gaps of 60+ days inside the record (1,301 days in all). Longest: Nov 1, 1925 to Apr 30, 1926 (181 days); Dec 1, 1923 to Apr 30, 1924 (152 days); Nov 1, 1932 to Mar 31, 1933 (151 days).
- zero run Trinchera Creek At The Seyfried Splitter: 5 runs of 60+ days at zero flow; longest 628 days from Sep 14, 2019; 569 days from Sep 13, 2017. Usually real (a dry channel or no release), not missing data.
- fallback Trinchera Creek Below Smith Res, Nr Blanca, CO: 51% of days come from usgs; codwr 49% fill days usgs does not cover, so the source changes within the record.
- flatline Trinchera Creek Below Smith Res, Nr Blanca, CO: 31 runs of 30+ days at exactly the same flow: 1.0 cfs for 172 days from Oct 20, 1930; 1.0 cfs for 128 days from Oct 15, 1933; 1.0 cfs for 121 days from Sep 2, 1934. Below a dam this is usually a steady set release, which is real 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 |
|---|---|---|---|---|---|
| Trinchera C Ab Mtn Home Re, Nr Fort Garland, CO | Alamosa-Trinchera | codwr, usgs | 1923-04-30 | 2026-10-26 | 5085 |
| Trinchera Creek Below Smith Res, Nr Blanca, CO | Alamosa-Trinchera | codwr, usgs | 1929-09-30 | 2026-10-26 | 4736 |
| Trinchera C Ab Turners Ranch, Nr Ft Garland, CO | Alamosa-Trinchera | codwr, usace_cwms, usgs | 1923-04-02 | 2026-10-26 | 5214 |
| Trinchera Creek At The Seyfried Splitter | Alamosa-Trinchera | codwr | 2016-04-25 | 2022-08-15 | 329 |