Willow Creek (Rio Grande-Elephant Butte)
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.
- 1Rio Chama
- river and reservoirs
- gauge
About the Willow Creek (Rio Grande-Elephant Butte)
This report follows 25 miles (41 km) of the Willow Creek (Rio Grande-Elephant Butte), all within the Rio Chama watershed segment. At the lower end of the report the river drains about 120 square miles. Downstream of the mapped reach it flows into the Rio Chama. Reservoirs on this reach: Heron Reservoir. 2 gauges with at least 26 weeks of daily flow cover 1962 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: Rio Chama
No data last week.
Median conductance 143 µS/cm in the 2020s. Rain over the last 3 months: 204% of normal.
Reservoirs
| Reservoir | Completed | Main purpose | Storage, acre-ft |
|---|---|---|---|
| Heron ReservoirHeron Dam | water storage |
From the archive: National Inventory of Dams (USACE) and the reservoir registry.
Water users
Surface water withdrawn, 2020
In the counties this river crosses (Rio Arriba): 144,257 acre-feet. County totals include other streams.
| Use | Share (bar) | Share | Acre-ft |
|---|---|---|---|
| Irrigated agriculture | 79% | 114,666 | |
| Reservoir evaporation | 18% | 25,890 | |
| Commercial | 2% | 3,339 | |
| Public water supply | 0% | 198 | |
| Livestock | 0% | 158 |
State Engineer, New Mexico Water Use by Categories 2020.
Public water systems beside the river
Rutherton Mutual Water Association, Chama West Water Users Association
State Engineer's public water systems layer (service areas within 2 km).
Sources
Numbered sources for the statements above, as they were read when the page was prepared.