Upper Mystic Lake, Gate House, at Winchester water level

Name: Upper Mystic Lake, Gate House, at Winchester water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Lake, Upper Mystic Lake, Gate House, Massachusetts, United States

Directions

Latest reading

Surface elevation

114.36ft Steady over the last 24 hours

Measured Oct 19, 2026, 07:00 AM EDT (1 hour ago)

History

7 days

Surface elevation

What this means

The latest lake level at Upper Mystic Lake, Gate House, at Winchester is 114.36 ft. The agency publishes no normal range or warning level for this lake yet, so there is nothing to judge the number against.

The level has held steady over the past 24 hours. Over the past 30 days it has moved between 114.36 ft and 114.47 ft.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

Swimming and boating at Upper Mystic Lake, Gate House, at Winchester

Without a published normal range, the trend is the most useful thing here: a steady lake means few changes at the shore.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

Rain in the last 3 days: 0.15 in.

18 Sun 55° 32° – Wind 8 mph

19 Mon 57° 37° – Wind 8 mph

20 Tue 60° 46° – Wind 12 mph

21 Wed 52° 45° – Wind 13 mph

22 Thu 63° 40° – Wind 8 mph

23 Fri 57° 42° – Wind 7 mph

24 Sat 54° 37° – Wind 6 mph

Forecast: Open-Meteo

Sunrise 07:03 AM Sunset 05:58 PM Daylight 10 hr, 55 min First quarter 58%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Aberjona River at WinchesterRiver gauge, Aberjona River	16.2 cfs	Normal	−1.6 cfs	1.2 mi
Alewife Brook near ArlingtonTidal gauge, Alewife Brook	9.9 cfs	Normal	−1.2 cfs	1.8 mi
Mystic River at Amelia Earhart Dam near SomervilleTidal gauge, Mystic River	105.41 ft	Normal	+0.28 ft	4.5 mi
Cambridge Reservoir, Unnamed Tributary 3, near LexingtonRiver gauge, Cambridge Reservoir, Unnamed Tributary 3	0.3 cfs	Low	±0	5.7 mi
Cambridge Reservoir, Unnamed Tributary 2, near LexingtonRiver gauge, Cambridge Reservoir, Unnamed Tributary 2	0.1 cfs	Low	±0	5.7 mi
Charles River at First St at CambridgeTidal gauge, Charles River	107.63 ft	Normal	−0.30 ft	5.9 mi
Charles River at WalthamRiver gauge, Charles River	1.53 ft	Below flood stage	−0.04 ft	6.0 mi
Charles River, New Charles River Dam at BostonTidal gauge, Charles River, New Charles River Dam	107.60 ft	Normal	−0.29 ft	6.1 mi

Questions and answers

Is Upper Mystic Lake, Gate House, at Winchester really 114.36 ft deep?

No. 114.36 ft 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 Upper Mystic Lake, Gate House, at Winchester today?

On Oct 19, 2026, 07:00 AM EDT, the surface elevation was 114.36 ft. Steady over the last 24 hours.

Is Upper Mystic Lake, Gate House, at Winchester rising or falling?

Steady over the last 24 hours.

Is the level of Upper Mystic Lake, Gate House, at Winchester normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

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:01102505 (Agency page)
Coordinates: 42.43120, -71.14767 (WGS84)
Vertical datum: local
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
Surface elevation	114.36 ft	2026-10-19 11:00	Provisional

Download

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How to cite

U.S. Geological Survey: Upper Mystic Lake, Gate House, at Winchester (usgs:01102505). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/massachusetts/upper-mystic-lake-gate-house-at-winchester

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