How high is the Mahwah River Near Suffern NY right now?

The Mahwah River Near Suffern NY is currently flowing at 9 cubic feet per second with a gage height of 1.73 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Mahwah River Near Suffern NY normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 50th percentile compared to the long-term historical record at this gauge.

Is the Mahwah River Near Suffern NY at flood stage?

No — the gage height is 3.27 feet below the NWS flood-stage threshold of 5.0 feet.

What is the historical median flow for the Mahwah River Near Suffern NY on June 11?

The long-term median discharge for this date is 9 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 4 to 42 cfs.

Where is the Mahwah River Near Suffern NY stream gauge located?

The Mahwah River Near Suffern NY stream gauge is operated by the USGS in Rockland County, NY on the Mahwah River. USGS site number 01387450 (coordinates 41.1411, -74.1161).

Mahwah River Near Suffern NY

USGS Site No: 01387450 • Mahwah River • Rockland County, NY

Mahwah River Near Suffern NY on the Mahwah River is currently at 9 cfs (Normal — 50th percentile for this date) . Gage height: 1.73 ft.

Reading from 1 week ago

CFS Discharge

1.73

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	4
25th	Low threshold	6
50th (Median)	Normal (median)	9
75th	High threshold	21	Today: 9 cfs
95th	Very High threshold	42

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	10	—
May 28, 2026	11	—
May 27, 2026	14	—
May 26, 2026	17	—
May 25, 2026	22	—
May 24, 2026	29	—
May 23, 2026	8	—
May 22, 2026	6	—
May 21, 2026	7	—
May 20, 2026	7	—
May 19, 2026	7	—
May 18, 2026	8	—
May 17, 2026	8	—
May 16, 2026	9	—
May 15, 2026	9	—
Apr 21, 2026	10	—
Apr 20, 2026	11	—
Apr 19, 2026	11	—
Apr 18, 2026	11	—
Apr 17, 2026	12	—
Apr 16, 2026	12	—
Apr 15, 2026	13	—
Apr 14, 2026	13	—
Apr 13, 2026	13	—
Apr 12, 2026	13	—
Apr 11, 2026	13	—
Apr 10, 2026	14	—
Apr 9, 2026	15	—
Apr 8, 2026	16	—
Apr 7, 2026	17	—

Station Information

USGS Site No: 01387450
State: NY
County: Rockland County
Coordinates: 41.1411, -74.1161
Drainage Area: 12 mi²
Datum (ft): 321.6
HUC Code: 02030103

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 4.5 ft
Flood Stage: 5.0 ft
Moderate Flood: 7.0 ft
Major Flood: 10.5 ft

Currently 3.27 ft below flood stage.

Recent Extremes

Max discharge: 176 cfs

May 9, 2025
Min discharge: 2 cfs

Aug 11, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Cupsaw Bk Near Wanaque NJ
7.6 mi

Unknown
Ringwood Creek Near Wanaque NJ
7.9 mi · 12 cfs

Normal
Pascack Brook at Park Ridge NJ
8.3 mi · 8 cfs

Low
Erskine Brook Near Wanaque NJ
8.6 mi

Unknown
Wanaque River at Monks NJ
9.5 mi · 25 cfs

Normal