Sf Gualala River near The Sea Ranch CA

USGS Site No: 11467510 • Sf Gualala River • Sonoma County, CA

Sf Gualala River near The Sea Ranch CA on the Sf Gualala River is currently at 37 cfs (High — 76th percentile for this date) . Gage height: 5.05 ft.

Reading from

37
CFS Discharge
5.05
Gage Height (ft)
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 2
50th (Median) Normal (median) 4
75th High threshold 12
95th Very High threshold 398 Today: 37 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.

1.5k 745 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 36 —
May 27, 2026 34 —
May 26, 2026 35 —
May 25, 2026 34 —
May 24, 2026 34 —
May 23, 2026 34 —
May 22, 2026 34 —
May 21, 2026 35 —
May 20, 2026 36 —
May 19, 2026 37 —
May 18, 2026 38 —
May 17, 2026 39 —
May 16, 2026 41 —
May 15, 2026 43 —
Apr 20, 2026 84 —
Apr 19, 2026 66 —
Apr 18, 2026 71 —
Apr 17, 2026 81 —
Apr 16, 2026 94 —
Apr 15, 2026 109 —
Apr 14, 2026 137 —
Apr 13, 2026 215 —
Apr 12, 2026 297 —
Apr 11, 2026 117 —
Apr 10, 2026 61 —
Apr 9, 2026 55 —
Apr 8, 2026 56 —
Apr 7, 2026 58 —
Apr 6, 2026 60 —
Apr 5, 2026 64 —

Station Information

USGS Site No
11467510
State
CA
County
Sonoma County
Coordinates
38.7090, -123.4266
Drainage Area
161 mi²
Datum (ft)
42.3
HUC Code
18010109
View on USGS NWIS →

Recent Extremes

Max discharge
7,310 cfs
Jan 5, 2026
Min discharge
2 cfs
Sep 7, 2025

Computed from the local daily-values archive.

Nearby Gauges

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