Rio Hondo above Whittier Narrows Dam CA

USGS Site No: 11101250 • Los Angeles County, CA

Rio Hondo above Whittier Narrows Dam CA is currently at 1 cfs (Normal — 51th percentile for this date) . Gage height: 1.26 ft.

Reading from

1
CFS Discharge
1.26
Gage Height (ft)
Normal
Flow Condition
Normal
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 1
50th (Median) Normal (median) 1
75th High threshold 2 Today: 1 cfs
95th Very High threshold 146

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.

512 256 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 0 —
May 27, 2026 29 —
May 26, 2026 90 —
May 25, 2026 91 —
May 24, 2026 88 —
May 23, 2026 87 —
May 22, 2026 86 —
May 21, 2026 85 —
May 20, 2026 77 —
May 19, 2026 66 —
May 18, 2026 72 —
May 17, 2026 71 —
May 16, 2026 72 —
May 15, 2026 67 —
Apr 20, 2026 276 —
Apr 19, 2026 454 —
Apr 18, 2026 457 —
Apr 17, 2026 455 —
Apr 16, 2026 465 —
Apr 15, 2026 370 —
Apr 14, 2026 405 —
Apr 13, 2026 36 —
Apr 12, 2026 97 —
Apr 11, 2026 3 —
Apr 10, 2026 6 —
Apr 9, 2026 288 —
Apr 8, 2026 454 —
Apr 7, 2026 338 —
Apr 6, 2026 361 —
Apr 5, 2026 368 —

Station Information

USGS Site No
11101250
State
CA
County
Los Angeles County
Coordinates
34.0583, -118.0717
Drainage Area
91 mi²
Datum (ft)
220.0
HUC Code
18070105
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
6.0 ft
Flood Stage
7.9 ft

Currently 6.64 ft below flood stage.

Recent Extremes

Max discharge
1,000 cfs
Dec 24, 2025
Min discharge
0 cfs
May 28, 2026
Days at flood stage
0

Computed from the local daily-values archive.

Nearby Gauges

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