How high is the Ramapo River Near Mahwah NJ right now?

The Ramapo River Near Mahwah NJ is currently flowing at 91 cubic feet per second with a gage height of 2.90 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Ramapo River Near Mahwah NJ normal for this time of year?

Current flow is classified as normal for October 28. Today's discharge is at the 52th percentile compared to the long-term historical record at this gauge.

Is the Ramapo River Near Mahwah NJ at flood stage?

No — the gage height is 5.10 feet below the NWS flood-stage threshold of 8.0 feet.

What is the historical median flow for the Ramapo River Near Mahwah NJ on October 28?

The long-term median discharge for this date is 79 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 23 to 1,240 cfs.

Where is the Ramapo River Near Mahwah NJ stream gauge located?

The Ramapo River Near Mahwah NJ stream gauge is operated by the USGS in Bergen County, NJ on the Ramapo River. USGS site number 01387500 (coordinates 41.0981, -74.1628).

Ramapo River Near Mahwah NJ

USGS Site No: 01387500 • Ramapo River • Bergen County, NJ

Ramapo River Near Mahwah NJ on the Ramapo River is currently at 91 cfs (Normal — 52th percentile for this date) . Gage height: 2.90 ft.

Reading from 4 months ago

Downstream on Ramapo River ↓

Ramapo River at West Oakland Avenue at Oakland NJ

CFS Discharge

2.90

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	23
25th	Low threshold	33
50th (Median)	Normal (median)	79
75th	High threshold	240	Today: 91 cfs
95th	Very High threshold	1,240

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 28, 2026	113	—
May 27, 2026	137	—
May 26, 2026	184	—
May 25, 2026	243	—
May 24, 2026	235	—
May 23, 2026	89	—
May 22, 2026	68	—
May 21, 2026	72	—
May 20, 2026	75	—
May 19, 2026	68	—
May 18, 2026	71	—
May 17, 2026	73	—
May 16, 2026	80	—
May 15, 2026	86	—
Apr 21, 2026	85	—
Apr 20, 2026	93	—
Apr 19, 2026	90	—
Apr 18, 2026	97	—
Apr 17, 2026	102	—
Apr 16, 2026	98	—
Apr 15, 2026	98	—
Apr 14, 2026	97	—
Apr 13, 2026	94	—
Apr 12, 2026	97	—
Apr 11, 2026	107	—
Apr 10, 2026	109	—
Apr 9, 2026	113	—
Apr 8, 2026	124	—
Apr 7, 2026	138	—
Apr 6, 2026	163	—

Station Information

USGS Site No: 01387500
State: NJ
County: Bergen County
Coordinates: 41.0981, -74.1628
Drainage Area: 120 mi²
Datum (ft): 253.1
HUC Code: 02030103

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 7.5 ft
Flood Stage: 8.0 ft
Moderate Flood: 9.0 ft
Major Flood: 12.0 ft

Currently 5.10 ft below flood stage.

Recent Extremes

Max discharge: 1,660 cfs

May 10, 2025
Min discharge: 13 cfs

Jul 30, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

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