How high is the St. John River at Ninemile Bridge, Maine right now?

The St. John River at Ninemile Bridge, Maine is currently flowing at 1,370 cubic feet per second with a gage height of 2.29 feet, based on the most recent USGS instantaneous reading.

Is the flow on the St. John River at Ninemile Bridge, Maine normal for this time of year?

Current flow is classified as normal for October 27. Today's discharge is at the 41th percentile compared to the long-term historical record at this gauge.

Is the St. John River at Ninemile Bridge, Maine at flood stage?

No — the gage height is 12.71 feet below the NWS flood-stage threshold of 15.0 feet.

What is the historical median flow for the St. John River at Ninemile Bridge, Maine on October 27?

The long-term median discharge for this date is 1,730 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 458 to 6,410 cfs.

Where is the St. John River at Ninemile Bridge, Maine stream gauge located?

The St. John River at Ninemile Bridge, Maine stream gauge is operated by the USGS in Aroostook County, ME on the St. John River. USGS site number 01010000 (coordinates 46.7006, -69.7156).

St. John River at Ninemile Bridge, Maine

USGS Site No: 01010000 • St. John River • Aroostook County, ME

St. John River at Ninemile Bridge, Maine on the St. John River is currently at 1,370 cfs (Normal — 41th percentile for this date) . Gage height: 2.29 ft.

Reading from 4 months ago

Downstream on St. John River ↓

St. John River at Dickey, Maine

1,370

CFS Discharge

2.29

Gage Height (ft)

Normal

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 27 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	458
25th	Low threshold	732
50th (Median)	Normal (median)	1,730	Today: 1,370 cfs
75th	High threshold	3,230
95th	Very High threshold	6,410

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	1,970	—
May 27, 2026	1,490	—
May 26, 2026	921	—
May 25, 2026	711	—
May 24, 2026	770	—
May 23, 2026	891	—
May 22, 2026	1,060	—
May 21, 2026	1,260	—
May 20, 2026	1,470	—
May 19, 2026	1,680	—
May 18, 2026	1,960	—
May 17, 2026	2,240	—
May 16, 2026	2,560	—
May 15, 2026	2,700	—
Apr 21, 2026	17,700	—
Apr 20, 2026	24,700	—
Apr 19, 2026	28,300	—
Apr 18, 2026	29,100	—
Apr 17, 2026	26,900	—
Apr 16, 2026	20,800	—
Nov 22, 2025	625	—
Nov 21, 2025	706	—
Nov 20, 2025	802	—
Nov 19, 2025	901	—
Nov 18, 2025	1,010	—
Nov 17, 2025	1,170	—
Nov 16, 2025	1,410	—
Nov 15, 2025	1,790	—
Nov 14, 2025	2,290	—
Nov 13, 2025	3,060	—

Station Information

USGS Site No: 01010000
State: ME
County: Aroostook County
Coordinates: 46.7006, -69.7156
Drainage Area: 1,338 mi²
Datum (ft): 930.6
HUC Code: 01010001

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 13.0 ft
Flood Stage: 15.0 ft
Moderate Flood: 20.0 ft
Major Flood: 23.0 ft

Currently 12.71 ft below flood stage.

Recent Extremes

Max discharge: 29,100 cfs

Apr 18, 2026
Min discharge: 84 cfs

Sep 22, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Big Black River Near Depot Mountain, Maine
13.5 mi · 243 cfs

Normal
Allagash River Near Allagash, Maine
39.4 mi · 1,830 cfs

Normal
St. John River at Dickey, Maine
41.1 mi · 4,190 cfs

Normal
East. Branch. Penobscot River Below Grand Lake Matagamon
58.8 mi · 398 cfs

Very High