How high is the Mongaup River Below Swinging Bridge Reservoir NY right now?

The Mongaup River Below Swinging Bridge Reservoir NY is currently flowing at 121 cubic feet per second with a gage height of 4.11 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Mongaup River Below Swinging Bridge Reservoir NY normal for this time of year?

Current flow is classified as low for June 11. Today's discharge is at the 25th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Mongaup River Below Swinging Bridge Reservoir NY on June 11?

The long-term median discharge for this date is 181 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 0 to unavailable cfs.

Where is the Mongaup River Below Swinging Bridge Reservoir NY stream gauge located?

The Mongaup River Below Swinging Bridge Reservoir NY stream gauge is operated by the USGS in Sullivan County, NY on the Mongaup River. USGS site number 01433005 (coordinates 41.5673, -74.7833).

Mongaup River Below Swinging Bridge Reservoir NY

USGS Site No: 01433005 • Mongaup River • Sullivan County, NY

Mongaup River Below Swinging Bridge Reservoir NY on the Mongaup River is currently at 121 cfs (Low — 25th percentile for this date) . Gage height: 4.11 ft.

Reading from 1 week ago

↑ Upstream on Mongaup River

Mongaup River at Mongaup Valley NY

Downstream on Mongaup River ↓

Mongaup River Near Mongaup NY

121

CFS Discharge

4.11

Gage Height (ft)

Low

Flow Condition

N/A

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	0
25th	Low threshold	122	Today: 121 cfs
50th (Median)	Normal (median)	181
75th	High threshold	310
95th	Very High threshold	0

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	116	—
May 27, 2026	137	—
May 26, 2026	150	—
May 25, 2026	158	—
May 24, 2026	159	—
May 23, 2026	158	—
May 22, 2026	157	—
May 21, 2026	157	—
May 20, 2026	178	—
May 19, 2026	193	—
May 18, 2026	236	—
May 17, 2026	301	—
May 16, 2026	302	—
May 15, 2026	302	—
Apr 21, 2026	175	—
Apr 20, 2026	139	—
Apr 19, 2026	136	—
Apr 18, 2026	137	—
Apr 17, 2026	136	—
Apr 16, 2026	131	—
Apr 15, 2026	145	—
Apr 14, 2026	130	—
Apr 13, 2026	130	—
Apr 12, 2026	129	—
Apr 11, 2026	127	—
Apr 10, 2026	127	—
Apr 9, 2026	127	—
Apr 8, 2026	158	—
Apr 7, 2026	173	—
Apr 6, 2026	229	—

Station Information

USGS Site No: 01433005
State: NY
County: Sullivan County
Coordinates: 41.5673, -74.7833
Drainage Area: 116 mi²
Datum (ft): 936.3
HUC Code: 02040104

View on USGS NWIS →

Recent Extremes

Max discharge: 941 cfs

May 11, 2025
Min discharge: 48 cfs

Sep 18, 2025

Computed from the local daily-values archive.

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