Upper San Juan HUC8 14080101
A 8,886 km² sub-basin of the Upper Colorado region in CO, NM. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
35
Stressed
Drought index
365
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
83%
of 6 reporting
Median flow
27%
p8 of record
Water assets
1,473
65 springs · 408 wells
USGS gauges (10)
- SAN JUAN RIVER NEAR CARRACAS, CO.0934640019 cfsp4 · much below normal
- LOS PINOS RIVER AT LA BOCA, CO.0935450036 cfsp5 · much below normal
- LOS PINOS RIVER NEAR IGNACIO, CO093538000 cfsp7 · much below normal
- SAN JUAN RIVER AT PAGOSA SPRINGS, CO0934250027 cfsp9 · much below normal
- VALLECITO CREEK NEAR BAYFIELD, CO.0935290026 cfsp10 · much below normal
- SAN JUAN RIVER NEAR ARCHULETA, NM09355500859 cfsp69 · normal
- LOS PINOS R ABV VALLECITO RES NR BAYFIELD, CO0935280026 cfsno long-term record
- CITIZENS DITCH AT BLOOMFIELD, NM0935560046 cfsno long-term record
- SAN JUAN RIVER AT BLOOMFIELD, NM09357000630 cfsno long-term record
- SAN JUAN R AT BOLACK RANCH BRDG NR FARMINGTON NM09357700630 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 365 | 100 | 5/6 | p8 |
Top water assets
- 70Spencereservoir
- 69San Juan Riverriver
- 69Dulcereservoir
- 69Sambrito Creekriver
- 69San Juan River At Bloomfield, Nmriver
- 69La Jara Creekriver
- 69San Juan Riverriver
- 69San Juan Riverriver
- 69San Juan Riverriver
- 69Navajo Riverriver