Assabet River at Maynard water level

Name: Assabet River at Maynard water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Assabet River, Massachusetts, United States

Directions

Below flood stage

Water level

2.42ft Steady over the last 24 hours

Measured Oct 18, 2026, 12:15 AM EDT (58 min ago)

Flow: 149 cfs

History

7 days

Water level Forecast Minor flood stage

The forecast expects the river to fall to 2.30 ft by Tuesday, October 20 at 02:00 AM. Issued Saturday, October 17 at 11:33 AM by NOAA National Weather Service.

What this means

Water levels are unremarkable at Assabet River at Maynard, where the gauge shows 2.42 ft.

It is 2.58 ft below the flood stage of 5.00 ft.

It has barely moved over the past 24 hours. The forecast expects the river to fall to 2.30 ft by Tuesday, October 20 at 02:00 AM. The 30-day range is 2.32 ft – 2.42 ft.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record: 8.94 ftAugust 20, 1955
Forecast peak: 2.50 ftSunday, October 18 at 08:00 AM

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

For reference, flood stage is 5.00 ft.

What happens at each level

7.00 ft: Significant flooding will affect interests along the river in Maynard, Concord and Hudson. Roadways may become impassable due to flood waters and some properties may need to be evacuated. Follow the directions of local emergency management officials.
6.00 ft: Flooding is likely in low lying sections along the river including portions of Maynard, Hudson and Concord. Water may approach homes along the river and may force several localized road closures.
5.00 ft: Minor lowland and backyard flooding is likely along reaches of the river in Maynard, Concord as well as Hudson. Several river roads may also become covered in water.
2.42 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: 16 %.

Rank	Level	Date
1	8.94 ft	August 20, 1955
2	8.15 ft	March 19, 1968
3	8.11 ft	January 26, 1979
4	7.17 ft	April 7, 1987
5	7.14 ft	March 16, 2010
6	7.08 ft	March 31, 2010
7	6.68 ft	June 7, 1982
8	6.47 ft	September 13, 1954
9	6.41 ft	March 23, 2001
10	6.39 ft	February 26, 2010

Weather at the gauge

The forecast is not available right now.

Sunrise 07:03 AM Sunset 06:01 PM Daylight 10 hr, 58 min First quarter 46%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Nashoba Brook near ActonRiver gauge, Nashoba Brook	2.3 cfs	Low	±0	6.0 mi
Sudbury River at SaxonvilleRiver gauge, Sudbury River	4.97 ft	Below flood stage	−0.75 ft	8 mi
Cochituate Brook below Lake Cochituate at FraminghamRiver gauge, Cochituate Brook	20.2 cfs	Normal	−4.8 cfs	9 mi
Stony Brook at Viles Street, near WestonRiver gauge, Stony Brook	2.5 cfs	Low	−1.4 cfs	9 mi
Hobbs Brook below Cambridge Reservoir near Kendall GreenReservoir, Hobbs Brook	5.3 cfs	Normal	−1.8 cfs	9 mi
Cambridge Reservoir, Unnamed Tributary 2, near LexingtonRiver gauge, Cambridge Reservoir, Unnamed Tributary 2,	0.1 cfs	Low	±0	10 mi
Cambridge Reservoir, Unnamed Tributary 3, near LexingtonRiver gauge, Cambridge Reservoir, Unnamed Tributary 3,	0.6 cfs	Normal	−0.1 cfs	10 mi
Stony Brook, Unnamed Tributary 1, near WalthamRiver gauge, Stony Brook, Unnamed Tributary 1,	0.5 cfs	Normal	−0.3 cfs	10 mi

Questions and answers

What is flood stage for the Assabet River at Maynard?

The official flood stage is 5.00 ft. The level is currently 2.58 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Assabet River at Maynard today?

On Oct 18, 2026, 12:15 AM EDT, the water level was 2.42 ft. Steady over the last 24 hours.

Is Assabet River at Maynard rising or falling?

Steady over the last 24 hours.

Is the level of Assabet River at Maynard normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Assabet River at Maynard?

The highest level on record is 8.94 ft on August 20, 1955.

Is Assabet River at Maynard expected to rise?

The forecast expects the river to fall to 2.30 ft by Tuesday, October 20 at 02:00 AM.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:01097000 (Agency page)
Coordinates: 42.43204, -71.44978 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	2.42 ft	2026-10-18 04:15	Provisional
Flow	149 cfs	2026-10-18 04:15	Provisional

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How to cite

U.S. Geological Survey: Assabet River at Maynard (usgs:01097000). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/massachusetts/assabet-river-at-maynard

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