Los Angeles HUC8 18070105
A 2,152 km² sub-basin of the California region in CA. 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
70
Moderate
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
60%
of 5 reporting
Median flow
54%
p22 of record
Water assets
746
7 springs · 556 wells
USGS gauges (5)
- BIG TUJUNGA C BL HANSEN DAM CA110970000 cfsp10 · below normal
- RIO HONDO BL WHITTIER NARROWS DAM CA111023000 cfsp10 · below normal
- ARROYO SECO NR PASADENA CA110980000 cfsp22 · below normal
- RIO HONDO AB WHITTIER NARROWS DAM CA111012501 cfsp34 · normal
- LOS ANGELES R A SEPULVEDA DAM CA1109245035 cfsp62 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 0 | 0 | 3/5 | p22 |
| 2026-10-20 | 0 | 0 | 3/5 | p10 |
| 2026-10-19 | 0 | 0 | 3/5 | p10 |
| 2026-10-18 | 0 | 0 | 3/5 | p10 |
| 2026-10-17 | 0 | 0 | 3/5 | p10 |
| 2026-10-16 | 0 | 0 | 3/5 | p10 |
| 2026-10-15 | 0 | 0 | 3/5 | p10 |
| 2026-10-14 | 0 | 0 | 3/5 | p10 |
| 2026-10-13 | 0 | 0 | 2/5 | p27 |
| 2026-10-12 | 0 | 0 | 2/5 | p27 |
| 2026-10-11 | 0 | 0 | 2/5 | p28 |
| 2026-10-10 | 0 | 0 | 4/5 | p10 |
| 2026-10-09 | 0 | 0 | 2/5 | p25 |
| 2026-10-08 | 0 | 0 | 3/5 | p10 |
Top water assets
- 67Pacoima Washriver
- 67Pacoima Washriver
- 67Pacoima Washriver
- 67Mill Creekriver
- 67Gold Creekriver
- 67Alder Creekriver
- 67Ler San Fernandoreservoir
- 67Fox Creekriver
- 67Big Tujunga Creekriver
- 67Pacoima Washriver