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Charles River at First St at Cambridge water level

Tidal gauge, Charles River, Massachusetts, United States

Directions

Right now

Normal for mid-October

Water level

107.94ft Steady over the last 24 hours

107.5 107.7 108.0 108.2

History

History
107.5108.0ftOct 12Oct 13Oct 15Oct 17Oct 18107.5108.0ftOct 12Oct 15Oct 18
107.0107.5108.0ftSep 19Sep 26Oct 3Oct 11Oct 18107.0107.5108.0ftSep 19Oct 3Oct 18
106.5107.0107.5108.0ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026106.5107.0107.5108.0ftOct 2025Apr 2026Oct 2026
106.5107.0107.5108.0ftJanMarMayJulSepNov2026106.5107.0107.5108.0ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %)

What this means

The Charles River at First St at Cambridge is at 107.94 ft, in the normal range for mid-October.

The median for mid-October is 107.73 ft, based on 19 years of readings, so the water level is 0.21 ft above typical. On the same day last year the reading was 108.12 ft, a difference of −0.18 ft.

It has barely moved over the past 24 hours. In the last month it has stayed between 106.76 ft and 108.32 ft.

Compared with 19 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
107.73 ft0.21 ft above the median for this date
Normal for this date
107.47 ft – 108.18 ft8 years in 10 fall in this range (19 years of records)
Same day last year
108.12 ft−0.18 ft
Lowest and highest in 30 days
106.76 ft – 108.32 ft
Lowest and highest in 12 months
106.76 ft – 107.98 ft

Weather at the gauge

Rain in the last 3 days: 0.21 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 52° 32° – Wind 6 mph
19 Mon 56° 36° – Wind 8 mph
20 Tue 60° 47° – Wind 13 mph
21 Wed 53° 47° – Wind 13 mph
22 Thu 64° 42° – Wind 8 mph
23 Fri 58° 44° – Wind 7 mph
24 Sat 55° 38° – Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:01 AM Sunset 05:59 PM Daylight 10 hr, 58 min First quarter 51%

Map

Other gauges on the Charles River

Gauge Level Compared with normal 24 hours Distance
Charles River at MedwayRiver gauge, Charles River 1.16 ft Below flood stage −0.10 ft 22 mi
Charles River at DoverRiver gauge, Charles River 1.28 ft Below flood stage −0.06 ft 12 mi
Charles River at WellesleyRiver gauge, Charles River 195 cfs Normal −8.0 cfs 8 mi
Charles River at WalthamRiver gauge, Charles River 1.56 ft Below flood stage −0.04 ft 8 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Charles River, New Charles River Dam at BostonTidal gauge, Charles River, New Charles River Dam 107.88 ft High −0.01 ft 1.0 mi
Muddy River at BrooklineTidal gauge, Muddy River 7.89 ft Normal +0.04 ft 2.4 mi
Alewife Brook near ArlingtonTidal gauge, Alewife Brook 10.1 cfs Normal −2.7 cfs 4.2 mi
Neponset River at Milton VillageEstuary gauge, Neponset River 200 cfs Normal −24.0 cfs 6 mi
Aberjona River at WinchesterRiver gauge, Aberjona River 17.4 cfs Normal −3.4 cfs 7 mi
Saugus River at Saugus Ironworks at SaugusTidal gauge, Saugus River 8.2 cfs Normal −7.0 cfs 8 mi
Mother Brook at DedhamRiver gauge, Mother Brook 95.2 cfs Very high −28.8 cfs 9 mi
Town Brook at QuincyTidal gauge, Town Brook 3.7 cfs Normal −1.5 cfs 9 mi

Questions and answers

Is the Charles River at First St at Cambridge higher than last year?

No, it is 0.18 ft lower than on the same day last year, when the reading was 108.12 ft.

What is a normal level for the Charles River at First St at Cambridge in mid-October?

The median for mid-October is 107.73 ft. In 8 years out of 10 the reading falls between 107.47 ft and 108.18 ft, based on 19 years of records.

What is the water level of Charles River at First St at Cambridge today?

On Oct 18, 2026, 01:00 PM EDT, the water level was 107.94 ft. Steady over the last 24 hours.

Is Charles River at First St at Cambridge rising or falling?

Steady over the last 24 hours. Up 0.73 ft over the last 7 days.

Is the level of Charles River at First St at Cambridge normal?

Normal for mid-October. Compared with 19 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:01104705 (Agency page)
Coordinates
42.36222, -71.07861 (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

ParameterLast valueTime (UTC)Quality
Water level 107.94 ft 2026-10-18 17:00 Provisional

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How to cite

U.S. Geological Survey: Charles River at First St at Cambridge (usgs:01104705). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/massachusetts/charles-river-at-first-st-at-cambridge

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.