San Lorenzo River at Santa Cruz CA
USGS Site No: 11161000 • San Lorenzo River • Santa Cruz County, CA
San Lorenzo River at Santa Cruz CA on the San Lorenzo River is currently at 46 cfs (High — 94th percentile for this date) . Gage height: 2.38 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 3 | |
| 25th | Low threshold | 7 | |
| 50th (Median) | Normal (median) | 13 | |
| 75th | High threshold | 19 | |
| 95th | Very High threshold | 48 | Today: 46 cfs |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 63 | — |
| May 27, 2026 | 37 | — |
| May 26, 2026 | 37 | — |
| May 25, 2026 | 38 | — |
| May 24, 2026 | 40 | — |
| May 23, 2026 | 39 | — |
| May 22, 2026 | 38 | — |
| May 21, 2026 | 37 | — |
| May 20, 2026 | 38 | — |
| May 19, 2026 | 40 | — |
| May 18, 2026 | 44 | — |
| May 17, 2026 | 46 | — |
| May 16, 2026 | 46 | — |
| May 15, 2026 | 46 | — |
| Apr 20, 2026 | 84 | — |
| Apr 19, 2026 | 62 | — |
| Apr 18, 2026 | 65 | — |
| Apr 17, 2026 | 69 | — |
| Apr 16, 2026 | 74 | — |
| Apr 15, 2026 | 80 | — |
| Apr 14, 2026 | 89 | — |
| Apr 13, 2026 | 114 | — |
| Apr 12, 2026 | 187 | — |
| Apr 11, 2026 | 128 | — |
| Apr 10, 2026 | 59 | — |
| Apr 9, 2026 | 47 | — |
| Apr 8, 2026 | 45 | — |
| Apr 7, 2026 | 46 | — |
| Apr 6, 2026 | 51 | — |
| Apr 5, 2026 | 54 | — |
Station Information
- USGS Site No
- 11161000
- State
- CA
- County
- Santa Cruz County
- Coordinates
- 36.9908, -122.0319
- Drainage Area
- 115 mi²
- Datum (ft)
- 8.7
- HUC Code
- 18060015
Flood Stage Thresholds
- Action Stage
- 18.0 ft
- Flood Stage
- 20.6 ft
- Moderate Flood
- 23.3 ft
- Major Flood
- 25.0 ft
Currently 18.17 ft below flood stage.
Recent Extremes
- Max discharge
-
1,840 cfsJan 6, 2026
- Min discharge
-
10 cfsSep 27, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Soquel C at Soquel CAHigh4.2 mi · 13 cfs
-
San Lorenzo River at Big Trees CAVery High4.3 mi · 46 cfs
-
Aptos C near Aptos CAUnknown7.0 mi · 0 cfs
-
Corralitos C at Freedom CAHigh14.9 mi · 2 cfs
-
Pajaro River at Watsonville CAVery High16.5 mi · 37 cfs