Grand Canyon HUC8 15010002
A 6,608 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
59
Moderate
Drought index
260
Severe
Area in D2+
59.96%
0% exceptional (D4)
Gauges below normal
25%
of 4 reporting
Median flow
87%
p43 of record
Water assets
1,190
239 springs · 16 wells
USGS gauges (6)
- COLORADO RVR ABV DIAMOND CREEK NR PEACH SPRINGS AZ094042008,590 cfsp9 · much below normal
- DIAMOND CREEK NEAR PEACH SPRINGS, AZ094042082 cfsp27 · normal
- HAVASU CREEK ABOVE THE MOUTH, NEAR SUPAI, AZ0940411572 cfsp59 · normal
- PUMP HOUSE WASH SPRING NEAR GRAND CANYON, AZ094030130 cfsp83 · above normal
- HERMIT CREEK ABOVE TONTO TRAIL NR GRAND CANYON, AZ094030432 cfsno long-term record
- COLORADO R ABV NATIONAL CANYON NR SUPAI0940412019,600 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 260 | 59.96 | 1/4 | p43 |
Top water assets
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver
- 69Parashant Washriver