Santa Maria HUC8 18060008
A 1,772 km² sub-basin of the California region in CA. 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
67
Moderate
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
67%
of 3 reporting
Median flow
31%
p10 of record
Water assets
1,461
2 springs · 1,421 wells
USGS gauges (4)
- SISQUOC R NR GAREY111400000 cfsp10 · below normal
- SANTA MARIA R A SUEY CROSSING NR SANTA MARIA CA111405850 cfsp10 · below normal
- ORCUTT C NR ORCUTT CA111410500 cfsp28 · normal
- SISQUOC R NR SISQUOC CA11138500202 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 2/3 | p10 |
Top water assets
- 67South Fork La Brea Creekriver
- 67Sisquoc Riverriver
- 67Sisquoc Riverriver
- 67North Fork La Brea Creekriver
- 67Manzana Creekriver
- 67Davy Brown Creekriver
- 67Manzana Creekriver
- 65South Fork La Brea Creekriver
- 65Tepusquet Creekriver
- 65Manzana Creekriver