Big Brook Near Marlboro NJ

USGS Site No: 01407290 • Big Brook • Monmouth County, NJ

Big Brook Near Marlboro NJ on the Big Brook is currently at 4 cfs (Very Low — 8th percentile for this date) . Gage height: 9.51 ft. This station is at or above flood stage.

Reading from

4
CFS Discharge
9.51
Gage Height (ft)
Very Low
Flow Condition
FLOOD
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 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 5 Today: 4 cfs
25th Low threshold 6
50th (Median) Normal (median) 8
75th High threshold 10
95th Very High threshold 61

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.

246 123 0 cfs Apr 6 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 8 —
May 27, 2026 6 —
May 26, 2026 6 —
May 25, 2026 9 —
May 24, 2026 23 —
May 23, 2026 6 —
May 22, 2026 4 —
May 21, 2026 5 —
May 20, 2026 5 —
May 19, 2026 4 —
May 18, 2026 4 —
May 17, 2026 5 —
May 16, 2026 5 —
May 15, 2026 5 —
Apr 21, 2026 5 —
Apr 20, 2026 5 —
Apr 19, 2026 5 —
Apr 18, 2026 5 —
Apr 17, 2026 5 —
Apr 16, 2026 5 —
Apr 15, 2026 5 —
Apr 14, 2026 5 —
Apr 13, 2026 6 —
Apr 12, 2026 5 —
Apr 11, 2026 6 —
Apr 10, 2026 6 —
Apr 9, 2026 6 —
Apr 8, 2026 7 —
Apr 7, 2026 7 —
Apr 6, 2026 8 —

Station Information

USGS Site No
01407290
State
NJ
County
Monmouth County
Coordinates
40.3197, -74.2142
Drainage Area
6 mi²
Datum (ft)
54.1
HUC Code
020301040301
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
17.0 ft

Recent Extremes

Max discharge
57 cfs
Mar 6, 2026
Min discharge
3 cfs
Aug 31, 2025

Computed from the local daily-values archive.

Nearby Gauges

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