Middle San Juan HUC8 14080105
A 5,037 km² sub-basin of the Upper Colorado region in AZ, 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
55
Moderate
Drought index
366
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
25%
of 4 reporting
Median flow
52%
p36 of record
Water assets
1,293
55 springs · 263 wells
USGS gauges (4)
- LA PLATA RIVER AT LA PLATA, NM093670000 cfsp10 · below normal
- LA PLATA RIVER NEAR FARMINGTON, NM093675000 cfsp27 · normal
- SAN JUAN RIVER AT SHIPROCK, NM09368000568 cfsp45 · normal
- SAN JUAN RIVER AT FARMINGTON, NM09365000836 cfsp55 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 366 | 100 | 1/4 | p36 |
Top water assets
- 69La Plata Riverriver
- 69La Plata Riverriver
- 69McDermott Arroyoriver
- 69San Juan Riverriver
- 69Red Washriver
- 69McDermott Arroyoriver
- 69San Juan Riverriver
- 69San Juan Riverriver
- 69La Plata Riverriver
- 69La Plata Riverriver