Trinchera Creek
Streamflow, conditions and background by watershed segment. Data through November 1, 2026.
Where it is
Segments are the HUC8 watersheds the gauges sit in, numbered upstream to downstream. Use the buttons to switch between the state and the river.
- 1Alamosa-Trinchera
- river and reservoirs
- gauge
About the Trinchera Creek
This report follows 49 miles (78 km) of the Trinchera Creek, all within the Alamosa-Trinchera watershed segment. At the lower end of the report the river drains about 511 square miles. Downstream of the mapped reach it flows into the Rio Grande. Named tributaries joining it here include the Ute Creek. Reservoirs on this reach: Smith Reservoir and Mountain Home Reservoir. 4 gauges with at least 26 weeks of daily flow cover 1923 to 2026.
From the archive: NHDPlus river network, WBD watersheds, NHD waterbodies, TIGER urban areas and the report's gauges.
From the headwaters down
Each watershed segment in order, with last week's flow rated against the same week in 1991–2020.
Segment 1: Alamosa-Trinchera
13 cfs last week much above normal, 102 dry days this year.
Median conductance 162 µS/cm in the 2020s. Rain over the last 3 months: 198% of normal.
Reservoirs
| Reservoir | Completed | Main purpose | Storage, acre-ft |
|---|---|---|---|
| Mountain Home | 1908 | Irrigation | 26,230 |
| Smith | 1914 | Irrigation | 14,058 |
From the archive: National Inventory of Dams (USACE) and the reservoir registry.
Sources
Numbered sources for the statements above, as they were read when the page was prepared.