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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
61
Moderate
Drought index
276
Severe
Area in D2+
75.5%
0% exceptional (D4)
Gauges below normal
0%
of 4 reporting
Median flow
440%
p79 of record
Water assets
1,293
55 springs · 263 wells
USGS gauges (4)
- SAN JUAN RIVER AT SHIPROCK, NM093680001,450 cfsp74 · normal
- SAN JUAN RIVER AT FARMINGTON, NM093650001,440 cfsp75 · above normal
- LA PLATA RIVER NEAR FARMINGTON, NM0936750013 cfsp83 · above normal
- LA PLATA RIVER AT LA PLATA, NM093670007 cfsp98 · much above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 276 | 75.5 | 0/4 | p79 |
| 2026-10-19 | 276 | 75.5 | 0/4 | p83 |
| 2026-10-18 | 276 | 75.5 | 0/4 | p83 |
| 2026-10-17 | 276 | 75.5 | 0/4 | p86 |
| 2026-10-16 | 276 | 75.5 | 0/4 | p91 |
| 2026-10-15 | 276 | 75.5 | 0/4 | p93 |
| 2026-10-14 | 276 | 75.5 | 0/4 | p83 |
| 2026-10-13 | 276 | 75.5 | 0/4 | p55 |
| 2026-10-12 | 276 | 75.5 | 1/4 | p65 |
| 2026-10-11 | 276 | 75.5 | 1/4 | p69 |
| 2026-10-10 | 276 | 75.5 | 0/4 | p69 |
| 2026-10-09 | 276 | 75.5 | 0/4 | p67 |
| 2026-10-08 | 276 | 75.5 | 0/4 | p63 |
| 2026-10-07 | 276 | 75.5 | 0/4 | p52 |
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