Charles River, New Charles River Dam at Boston water level

Name: Charles River, New Charles River Dam at Boston water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Tidal gauge, Charles River, New Charles River Dam, Massachusetts, United States

Directions

Low for mid-October

Water level

107.56ft Up 0.08 ft over the last 24 hours

Measured Oct 20, 2026, 02:36 AM EDT (25 min ago)

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

Low water at Charles River, New Charles River Dam at Boston: the gauge reads 107.56 ft, below normal for mid-October.

The median for mid-October is 107.80 ft, based on 17 years of readings, so the water level is 0.24 ft below typical. On the same day last year the reading was 107.20 ft, a difference of +0.36 ft.

It is on the way up, by 0.08 ft over the past 24 hours. The 30-day range is 106.72 ft – 108.27 ft.

Compared with 17 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 107.80 ft0.24 ft below the median for this date
Normal for this date: 107.37 ft – 107.95 ft8 years in 10 fall in this range (17 years of records)
Same day last year: 107.20 ft+0.36 ft
Lowest and highest in 30 days: 106.72 ft – 108.27 ft
Lowest and highest in 12 months: 106.71 ft – 107.95 ft

Weather at the gauge

Rain in the last 3 days: 0.23 in. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 60° 36° – Wind 16 mph

18 Sun 55° 33° – Wind 5 mph

19 Mon 55° 36° – Wind 15 mph

20 Tue 58° 51° – Wind 19 mph

21 Wed 54° 48° 0.00 in Wind 20 mph

22 Thu 57° 46° – Wind 14 mph

23 Fri 55° 48° – Wind 19 mph

Forecast: Open-Meteo

Sunrise 07:03 AM Sunset 05:56 PM Daylight 10 hr, 53 min First quarter 66%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Charles River at First St at CambridgeTidal gauge, Charles River	107.58 ft	Low	+0.06 ft	1.0 mi
Mystic River at Amelia Earhart Dam near SomervilleTidal gauge, Mystic River	105.48 ft	Normal	+0.17 ft	2.0 mi
Muddy River at BrooklineTidal gauge, Muddy River	7.55 ft	Low	+0.07 ft	3.3 mi
Alewife Brook near ArlingtonTidal gauge, Alewife Brook	8.6 cfs	Normal	−1.1 cfs	4.5 mi
Aberjona River at WinchesterRiver gauge, Aberjona River	15.4 cfs	Normal	−1.2 cfs	7 mi
Neponset River at Milton VillageEstuary gauge, Neponset River	141 cfs	Normal	−42.0 cfs	7 mi
Saugus River at Saugus Ironworks at SaugusTidal gauge, Saugus River	5.7 cfs	Normal	−0.9 cfs	7 mi
Charles River at WalthamRiver gauge, Charles River	1.50 ft	Below flood stage	−0.04 ft	9 mi

Questions and answers

Is the Charles River, New Charles River Dam at Boston higher than last year?

Yes, it is 0.36 ft higher than on the same day last year, when the reading was 107.20 ft.

What is a normal level for the Charles River, New Charles River Dam at Boston in mid-October?

The median for mid-October is 107.80 ft. In 8 years out of 10 the reading falls between 107.37 ft and 107.95 ft, based on 17 years of records.

What is the water level of Charles River, New Charles River Dam at Boston today?

On Oct 20, 2026, 02:36 AM EDT, the water level was 107.56 ft. Up 0.08 ft over the last 24 hours.

Is Charles River, New Charles River Dam at Boston rising or falling?

Up 0.08 ft over the last 24 hours. Up 0.19 ft over the last 7 days.

Is the level of Charles River, New Charles River Dam at Boston normal?

Low for mid-October. Compared with 17 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:01104715 (Agency page)
Coordinates: 42.36889, -71.06167 (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	107.56 ft	2026-10-20 06:36	Provisional

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How to cite

U.S. Geological Survey: Charles River, New Charles River Dam at Boston (usgs:01104715). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/massachusetts/charles-river-new-charles-river-dam-at-boston

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