Santa Ana River near Mentone (river Only) CA

USGS Site No: 11051499 • Santa Ana River • San Bernardino County, CA

Santa Ana River near Mentone (river Only) CA on the Santa Ana River is currently at 32 cfs (Very High — 96th percentile for this date) . Gage height: 6.89 ft.

Reading from

Downstream on Santa Ana River ↓
Santa Ana River at East St near San Bernardino CA
32
CFS Discharge
6.89
Gage Height (ft)
Very High
Flow Condition
N/A
Flood Status

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 0
25th Low threshold 0
50th (Median) Normal (median) 0
75th High threshold 1
95th Very High threshold 30

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.

704 352 0 cfs Apr 5 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 29 —
May 27, 2026 27 —
May 26, 2026 26 —
May 25, 2026 25 —
May 24, 2026 25 —
May 23, 2026 29 —
May 22, 2026 36 —
May 21, 2026 34 —
May 20, 2026 31 —
May 19, 2026 27 —
May 18, 2026 26 —
May 17, 2026 26 —
May 16, 2026 25 —
May 15, 2026 23 —
Apr 20, 2026 146 —
Apr 19, 2026 179 —
Apr 18, 2026 181 —
Apr 17, 2026 182 —
Apr 16, 2026 183 —
Apr 15, 2026 85 —
Apr 14, 2026 7 —
Apr 13, 2026 8 —
Apr 12, 2026 8 —
Apr 11, 2026 8 —
Apr 10, 2026 8 —
Apr 9, 2026 8 —
Apr 8, 2026 9 —
Apr 7, 2026 8 —
Apr 6, 2026 9 —
Apr 5, 2026 9 —

Station Information

USGS Site No
11051499
State
CA
County
San Bernardino County
Coordinates
34.1083, -117.1006
Drainage Area
210 mi²
Datum (ft)
1,956.2
HUC Code
18070203
View on USGS NWIS →

Recent Extremes

Max discharge
612 cfs
Jan 10, 2026
Min discharge
0 cfs
Nov 13, 2025

Computed from the local daily-values archive.

Nearby Gauges

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