Stony Brook, Unnamed Tributary 1, near Waltham water level

Name: Stony Brook, Unnamed Tributary 1, near Waltham 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, Stony Brook, Unnamed Tributary 1, Massachusetts, United States

Directions

Normal for mid-October

Water level

3.18ft Steady over the last 24 hours

Measured Oct 20, 2026, 03:40 PM EDT (33 min ago)

Flow: 0.4 cfs
Water temperature: 57 °F

History

7 days

Water level

What this means

Water levels are unremarkable at Stony Brook, Unnamed Tributary 1, near Waltham, where the gauge shows 3.18 ft.

It has barely moved over the past 24 hours. The 30-day range is 3.18 ft – 3.68 ft.

Fall is often low-water season on rivers, until steadier rain returns. The water temperature at the gauge is 57 °F.

Compared with 5 years of daily readings for this time of year. How to read levels

Paddling and fishing conditions

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

Weather at the gauge

No rain in the last 3 days.

20 Tue 62° 38° – Wind 13 mph

21 Wed 51° 42° – Wind 12 mph

22 Thu 62° 43° – Wind 10 mph

23 Fri 56° 42° – Wind 10 mph

24 Sat 62° 39° – Wind 7 mph

25 Sun 65° 43° – Wind 5 mph

26 Mon 70° 47° – Wind 6 mph

Forecast: Open-Meteo

Sunrise 07:04 AM Sunset 05:57 PM Daylight 10 hr, 53 min Waxing gibbous 71%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Stony Brook at RT 20 at WalthamRiver gauge, Stony Brook	8.2 cfs	Low	−0.4 cfs	0.2 mi
Stony Brook Reservoir at Dam near WalthamReservoir, Stony Brook Reservoir	2.0 cfs	Normal	+0.1 cfs	1.2 mi
Stony Brook Reservoir, Unnamed Tributary 1, near WestonRiver gauge, Stony Brook Reservoir, Unnamed Tributary 1	0.4 cfs	Normal	±0	1.3 mi
Stony Brook at Viles Street, near WestonRiver gauge, Stony Brook	2.1 cfs	Low	±0	1.3 mi
Hobbs Brook below Cambridge Reservoir near Kendall GreenReservoir, Hobbs Brook	5.2 cfs	Normal	−0.1 cfs	1.8 mi
Charles River at WalthamRiver gauge, Charles River	1.48 ft	Below flood stage	−0.04 ft	1.9 mi
Cambridge Reservoir, Unnamed Tributary 3, near LexingtonRiver gauge, Cambridge Reservoir, Unnamed Tributary 3	0.1 cfs	Low	−0.1 cfs	3.3 mi
Cambridge Reservoir, Unnamed Tributary 2, near LexingtonRiver gauge, Cambridge Reservoir, Unnamed Tributary 2	0.1 cfs	Low	±0	4.4 mi

Questions and answers

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 Stony Brook, Unnamed Tributary 1, near Waltham today?

On Oct 20, 2026, 03:40 PM EDT, the water level was 3.18 ft. Steady over the last 24 hours.

Is Stony Brook, Unnamed Tributary 1, near Waltham rising or falling?

Steady over the last 24 hours.

Is the level of Stony Brook, Unnamed Tributary 1, near Waltham normal?

Normal for mid-October. Compared with 5 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:01104455 (Agency page)
Coordinates: 42.37260, -71.27033 (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	3.18 ft	2026-10-20 19:40	Provisional
Flow	0.4 cfs	2026-10-20 19:40	Provisional
Water temperature	57 °F	2026-10-20 19:40	Provisional

Download

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How to cite

U.S. Geological Survey: Stony Brook, Unnamed Tributary 1, near Waltham (usgs:01104455). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/massachusetts/stony-brook-unnamed-tributary-1-near-waltham

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