Saint John River at Grand Falls water level

Name: Saint John River at Grand Falls water level (Environment and Climate Change Canada – Water Survey of Canada)
Creator: Environment and Climate Change Canada – Water Survey of Canada
License: https://open.canada.ca/en/open-government-licence-canada

River gauge, Saint John River, New Brunswick, Canada

Directions

Normal for mid-October

Surface elevation

89.69m Up 0.06 m over the last 24 hours

Measured Oct 19, 2026, 07:05 AM EDT (1 hour ago)

Flow: 162 m³/s

History

7 days 30 days

Surface elevation Normal range (10–90 %)

What this means

The Saint John River at Grand Falls is at 89.69 m, in the normal range for mid-October.

The median for mid-October is 89.92 m, based on 15 years of readings, so the water level is 0.22 m below typical.

It has risen 0.06 m over the past 24 hours. In the last month it has stayed between 88.59 m and 89.89 m.

Fall is often low-water season on rivers, until steadier rain returns.

Compared with 15 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 89.92 m0.22 m below the median for this date
Normal for this date: 89.26 m – 91.09 m8 years in 10 fall in this range (15 years of records)
Lowest and highest in 30 days: 88.59 m – 89.89 m
Lowest and highest in 12 months: 88.66 m – 89.46 m

On the river

Outside the spring freshet, most rivers settle into a gentler pattern, broken by storms.

Flood advisories come from the provincial river forecast centre.

About the Saint John River

The Saint John River is a 673-kilometre-long (418 mi) river flowing from headwaters in the Notre Dame Mountains near the Maine–Quebec border of the United States and Canada through northern Maine and western New Brunswick to the northwest shore of the Bay of Fundy. It is the longest river in eastern Canada.

Weather at the gauge

Rain in the last 3 days: 18 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

19 Mon 14° 1° – Wind 21 km/h

20 Tue 8° 2° – Wind 22 km/h

21 Wed 10° 0° – Wind 13 km/h

22 Thu 10° 1° 0.1 mm Wind 23 km/h

23 Fri 7° -1° – Wind 25 km/h

24 Sat 10° -2° – Wind 13 km/h

25 Sun 14° 0° – Wind 19 km/h

Forecast: Open-Meteo

Sunrise 06:55 AM Sunset 05:38 PM Daylight 10 hr, 43 min First quarter 59%

Map

Other gauges on the Saint John River

Gauge	Level	Compared with normal	24 hours	Distance
Saint John River at EdmundstonRiver gauge, Saint John River	134.65 m	Low	+0.05 m	57 km
Saint John River at FrederictonRiver gauge, Saint John River	0.92 m	Very low	−0.08 m	145 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Little Madawaska River at Caribou, MaineRiver gauge, Little Madawaska River	3.54 ft	Below flood stage	−0.20 ft	14 mi
Aroostook River near TinkerRiver gauge, Aroostook River	3.08 m	Low	±0	25 km
Grande Riviere at Violette BridgeRiver gauge, Grande Riviere	0.42 m	Normal	−0.13 m	27 km
Hardwood Brook below Glidden Brk near Caribou, MaineRiver gauge, Hardwood Brook	2.3 cfs	Low	−0.2 cfs	21 mi
Tobique River at Riley BrookRiver gauge, Tobique River	1.60 m	Normal	−0.02 m	43 km
Aroostook River at Washburn, MaineRiver gauge, Aroostook River	1.37 ft	Below flood stage	−0.05 ft	27 mi
Williams Brook at Phair, MaineRiver gauge, Williams Brook	1.28 ft	Below flood stage	−0.09 ft	30 mi
Iroquois River at Moulin MorneaultRiver gauge, Iroquois River	3.43 m	Low	−0.04 m	66 km

Questions and answers

What is a normal level for the Saint John River at Grand Falls in mid-October?

The median for mid-October is 89.92 m. In 8 years out of 10 the reading falls between 89.26 m and 91.09 m, based on 15 years of records.

Is Saint John River at Grand Falls really 89.69 m deep?

No. 89.69 m is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Saint John River at Grand Falls today?

On Oct 19, 2026, 07:05 AM EDT, the surface elevation was 89.69 m. Up 0.06 m over the last 24 hours.

Is Saint John River at Grand Falls rising or falling?

Up 0.06 m over the last 24 hours. Up 0.89 m over the last 7 days.

Is the level of Saint John River at Grand Falls normal?

Normal for mid-October. Compared with 15 years of daily readings for this time of year.

How often is this data updated?

Environment and Climate Change Canada – Water Survey of Canada publishes a new reading every hour. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from Environment and Climate Change Canada – Water Survey of Canada, the official operator of this gauge, and are published under the Open Government Licence – Canada. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: Environment and Climate Change Canada – Water Survey of Canada
Station code: eccc:01AF002 (Agency page)
Coordinates: 47.03889, -67.73972 (WGS84)
Vertical datum: GEODETIC SURVEY OF CANADA DATUM
Update interval: every hour
Licence: Open Government Licence – Canada. Contains information licensed under the Open Government Licence – Canada

Published series

Parameter	Last value	Time (UTC)	Quality
Surface elevation	89.69 m	2026-10-19 11:05	Provisional
Flow	162 m³/s	2026-10-19 11:05	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Saint John River at Grand Falls (eccc:01AF002). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/canada/new-brunswick/saint-john-river-at-grand-falls

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer