Upper Amargosa HUC8 18090202
A 8,826 km² sub-basin of the California region in CA, NV. 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
65
Moderate
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 3 reporting
Median flow
130%
p76 of record
Water assets
2,456
215 springs · 1,794 wells
USGS gauges (4)
- AMARGOSA RV AT TECOPA, CA102513000 cfsp46 · normal
- AMARGOSA RV ABV CHINA RANCH WASH NR TECOPA, CA102513302 cfsp76 · above normal
- WILLOW CK AT CHINA RANCH, CA102513350 cfsp86 · above normal
- BOREHOLE SPG CHANNEL NR TECOPA HOT SPGS, CA102512900 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 200 | 0 | 0/3 | p76 |
| 2026-10-19 | 200 | 0 | 0/3 | p76 |
| 2026-10-18 | 200 | 0 | 0/3 | p79 |
| 2026-10-17 | 200 | 0 | 0/3 | p85 |
| 2026-10-16 | 200 | 0 | 0/3 | p89 |
| 2026-10-15 | 201 | 0.89 | 0/3 | p91 |
| 2026-10-14 | 201 | 0.89 | 1/3 | p83 |
| 2026-10-13 | 201 | 0.89 | 1/3 | p91 |
| 2026-10-12 | 201 | 0.89 | 1/3 | p100 |
| 2026-10-11 | 201 | 0.89 | 2/3 | p16 |
| 2026-10-10 | 201 | 0.89 | 2/3 | p13 |
| 2026-10-09 | 201 | 0.89 | 2/3 | p17 |
| 2026-10-08 | 201 | 0.89 | 2/3 | p18 |
| 2026-10-07 | 201 | 0.89 | 2/3 | p18 |
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