San Carlos HUC8 15040007
A 2,787 km² sub-basin of the Lower Colorado region in AZ. 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
48
Stressed
Drought index
247
Severe
Area in D2+
47.37%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
0%
p10 of record
Water assets
1,113
0 springs · 128 wells
USGS gauges (1)
- SAN CARLOS RIVER NEAR PERIDOT, AZ.094685000 cfsp10 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 247 | 47.37 | 1/1 | p10 |
Top water assets
- 69South Fork Ash Creekriver
- 69South Fork Ash Creekriver
- 69South Fork Ash Creekriver
- 67Sycamore Creekriver
- 67Elgoreservoir
- 67Gilson Washriver
- 67South Fork Ash Creekriver
- 67Sevenmile Washriver
- 67Sevenmile Washriver
- 67San Carlos Riverriver