Old Swamp River near South Weymouth water level

Name: Old Swamp River near South Weymouth 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, Old Swamp River, Massachusetts, United States

Directions

Below flood stage

Water level

2.70ft Steady over the last 24 hours

Measured Oct 20, 2026, 03:00 AM EDT (57 min ago)

Flow: 4.9 cfs

History

7 days

Water level Minor flood stage

What this means

The gauge at Old Swamp River near South Weymouth reads 2.70 ft, a normal level.

It is 1.80 ft below the flood stage of 4.50 ft.

It has barely moved over the past 24 hours. Over the past 30 days it has moved between 2.70 ft and 2.81 ft.

Fall is often low-water season on rivers, until steadier rain returns.

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

Key numbers

Highest on record: 5.92 ftOctober 15, 2005

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 4.50 ft, still 1.80 ft away.

Highest crests on record

Rank	Level	Date
1	5.92 ft	October 15, 2005
2	5.71 ft	August 14, 2005
3	5.70 ft	March 15, 2010
4	5.46 ft	March 30, 2010
5	5.35 ft	June 8, 2006
6	5.35 ft	February 15, 1971
7	5.30 ft	October 21, 1996
8	5.24 ft	March 22, 2001
9	5.22 ft	August 13, 1994
10	5.14 ft	May 14, 2006

Weather at the gauge

The forecast is not available right now.

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
Whitmans Pond, Whitmans Pond Dam at E. WeymouthRiver gauge, Whitmans Pond, Whitmans Pond Dam	72.35 ft	Normal	−0.09 ft	1.6 mi
Whitmans Pond Fish Ladder at East WeymouthRiver gauge, Whitmans Pond Fish Ladder	7.5 cfs	Normal	−0.3 cfs	1.8 mi
Monatiquot River at East BraintreeTidal gauge, Monatiquot River	1.92 ft	Below flood stage	−0.04 ft	2.7 mi
Town Brook at QuincyTidal gauge, Town Brook	3.1 cfs	Normal	−0.2 cfs	4.8 mi
Town Brook at Diversion Tunnel at QuincyRiver gauge, Town Brook	16.51 ft	Normal	−0.03 ft	4.8 mi
Weir River at Leavitt Street at HinghamRiver gauge, Weir River	18.8 cfs	High	−1.6 cfs	4.8 mi
Neponset River at Milton VillageEstuary gauge, Neponset River	141 cfs	Normal	−40.0 cfs	8 mi
Indian Head River at HanoverTidal gauge, Indian Head River	1.85 ft	Below flood stage	−0.04 ft	9 mi

Questions and answers

What is flood stage for the Old Swamp River near South Weymouth?

The official flood stage is 4.50 ft. The level is currently 1.80 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 Old Swamp River near South Weymouth today?

On Oct 20, 2026, 03:00 AM EDT, the water level was 2.70 ft. Steady over the last 24 hours.

Is Old Swamp River near South Weymouth rising or falling?

Steady over the last 24 hours.

Is the level of Old Swamp River near South Weymouth normal?

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

What is the highest water level ever recorded at Old Swamp River near South Weymouth?

The highest level on record is 5.92 ft on October 15, 2005.

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.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:01105600 (Agency page)
Coordinates: 42.19038, -70.94477 (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	2.70 ft	2026-10-20 07:00	Provisional
Flow	4.9 cfs	2026-10-20 07:00	Provisional

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How to cite

U.S. Geological Survey: Old Swamp River near South Weymouth (usgs:01105600). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/massachusetts/old-swamp-river-near-south-weymouth

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