How high is the Delaware River at Trenton NJ right now?

The Delaware River at Trenton NJ is currently flowing at 8,430 cubic feet per second with a gage height of 9.35 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Delaware River at Trenton NJ normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 56th percentile compared to the long-term historical record at this gauge.

Is the Delaware River at Trenton NJ at flood stage?

No — the gage height is 10.65 feet below the NWS flood-stage threshold of 20.0 feet.

What is the historical median flow for the Delaware River at Trenton NJ on June 11?

The long-term median discharge for this date is 7,120 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 3,820 to 18,100 cfs.

Where is the Delaware River at Trenton NJ stream gauge located?

The Delaware River at Trenton NJ stream gauge is operated by the USGS in Mercer County, NJ on the Delaware River. USGS site number 01463500 (coordinates 40.2217, -74.7781).

Delaware River at Trenton NJ

USGS Site No: 01463500 • Delaware River • Mercer County, NJ

Delaware River at Trenton NJ on the Delaware River is currently at 8,430 cfs (Normal — 56th percentile for this date) . Gage height: 9.35 ft.

Reading from 1 week ago

↑ Upstream on Delaware River

Delaware River at Riegelsville NJ

8,430

CFS Discharge

9.35

Gage Height (ft)

Normal

Flow Condition

Normal

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	3,820
25th	Low threshold	5,480
50th (Median)	Normal (median)	7,120
75th	High threshold	12,700	Today: 8,430 cfs
95th	Very High threshold	18,100

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.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 29, 2026	9,060	—
May 28, 2026	10,400	—
May 27, 2026	11,900	—
May 26, 2026	12,300	—
May 25, 2026	11,100	—
May 24, 2026	8,180	—
May 23, 2026	6,930	—
May 22, 2026	7,380	—
May 21, 2026	8,100	—
May 20, 2026	8,570	—
May 19, 2026	9,140	—
May 18, 2026	10,100	—
May 17, 2026	11,200	—
May 16, 2026	12,500	—
May 15, 2026	11,100	—
Apr 21, 2026	9,160	—
Apr 20, 2026	8,840	—
Apr 19, 2026	9,170	—
Apr 18, 2026	9,160	—
Apr 17, 2026	8,580	—
Apr 16, 2026	8,990	—
Apr 15, 2026	9,390	—
Apr 14, 2026	9,790	—
Apr 13, 2026	10,500	—
Apr 12, 2026	11,200	—
Apr 11, 2026	12,600	—
Apr 10, 2026	13,600	—
Apr 9, 2026	14,800	—
Apr 8, 2026	16,600	—
Apr 7, 2026	18,400	—

Station Information

USGS Site No: 01463500
State: NJ
County: Mercer County
Coordinates: 40.2217, -74.7781
Drainage Area: 6,780 mi²
Datum (ft): -1.1
HUC Code: 020401050911

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 17.0 ft
Flood Stage: 20.0 ft
Moderate Flood: 23.0 ft
Major Flood: 25.0 ft

Currently 10.65 ft below flood stage.

Recent Extremes

Max discharge: 65,200 cfs

May 11, 2025
Min discharge: 2,630 cfs

Oct 23, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Stony Brook at Princeton NJ
9.2 mi · 11 cfs

Normal
Neshanic River at Reaville NJ
17.6 mi · 6 cfs

Normal
Pike Run at Belle Mead NJ
18.3 mi · 1 cfs

Low
Millstone River at Blackwells Mills NJ
20.5 mi · 157 cfs

Normal
Royce Brook at Hamilton Road Near Manville NJ
21.3 mi · 2 cfs

Normal