Lower San Juan HUC8 14080205
A 6,318 km² sub-basin of the Upper Colorado region in AZ, UT. 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
59
Moderate
Drought index
300
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
205%
p77 of record
Water assets
1,187
282 springs · 106 wells
USGS gauges (2)
- SAN JUAN RIVER NEAR BLUFF, UT093795001,890 cfsp77 · above normal
- SAN JUAN R BL PIUTE FARMS WASH NR MONUMENT VLY, UT09379700no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 300 | 100 | 0/1 | p77 |
| 2026-10-18 | 300 | 100 | 0/1 | p82 |
| 2026-10-17 | 300 | 100 | 0/1 | p91 |
| 2026-10-16 | 300 | 100 | 0/1 | p92 |
| 2026-10-15 | 300 | 100 | 0/1 | p95 |
| 2026-10-14 | 300 | 100 | 0/1 | p56 |
| 2026-10-13 | 300 | 100 | 0/1 | p54 |
| 2026-10-12 | 300 | 100 | 0/1 | p40 |
| 2026-10-11 | 300 | 100 | 0/1 | p28 |
| 2026-10-10 | 300 | 100 | 0/1 | p35 |
| 2026-10-09 | 300 | 100 | 0/1 | p38 |
| 2026-10-08 | 300 | 100 | 0/1 | p38 |
| 2026-10-07 | 300 | 100 | 0/1 | p43 |
| 2026-10-06 | 300 | 100 | 0/1 | p56 |
Top water assets
- 69Oljato Washriver
- 69Oljato Washriver
- 69Oljato Washriver
- 67San Juan R Bl Piute Farms Wash Nr Monument Vly, Utriver
- 67Oljato Washriver
- 67San Juan Riverriver
- 67Lime Creekriver
- 67Oljato Washriver
- 67San Juan Riverriver
- 67Oljato Washriver