Isinglass River at Rochester Neck Road, near Dover water level

Name: Isinglass River at Rochester Neck Road, near Dover 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, Isinglass River, New Hampshire, United States

Directions

Normal for late October

Water level

3.80ft Down 0.04 ft over the last 24 hours

Measured Oct 21, 2026, 03:15 AM EDT (1 hour ago)

Flow: 63.0 cfs
Water temperature: 46 °F

History

7 days

Water level

What this means

The Isinglass River at Rochester Neck Road, near Dover is at 3.80 ft, in the normal range for late October.

It has dropped 0.04 ft over the past 24 hours. In the last month it has stayed between 3.80 ft and 4.03 ft.

Fall is often low-water season on rivers, until steadier rain returns. The water temperature at the gauge is 46 °F.

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

Key numbers

Highest on record: 21.81 ftApril 17, 2007

Floating and fishing near Isinglass River at Rochester Neck Road, near Dover

Normal flows mean predictable rapids and good access at most put-ins.

Highest crests on record

Rank	Level	Date
1	21.81 ft	April 17, 2007
2	19.37 ft	May 14, 2006
3	17.07 ft	March 31, 2010
4	16.74 ft	December 19, 2023
5	14.65 ft	December 24, 2022
6	14.09 ft	April 2, 2004

Weather at the gauge

The forecast is not available right now.

Sunrise 07:05 AM Sunset 05:53 PM Daylight 10 hr, 48 min Waxing gibbous 75%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Cocheco River near RochesterRiver gauge, Cocheco River	19.7 cfs	Low	±0	2.5 mi
Oyster River near DurhamRiver gauge, Oyster River	1.3 cfs	Low	−0.3 cfs	6.0 mi
Lamprey River near NewmarketRiver gauge, Lamprey River	1.53 ft	Below flood stage	−0.05 ft	9 mi
Winnicut River at Greenland, near PortsmouthRiver gauge, Winnicut River	42.8 cfs	Very high	−2.9 cfs	15 mi
Mousam River at Route 4 near Sanford, MaineRiver gauge, Mousam River	63.2 cfs	Normal	+2.2 cfs	17 mi
Exeter River at Haigh Road, near BrentwoodRiver gauge, Exeter River	18.3 cfs	Normal	−2.3 cfs	18 mi
Lamprey River at Langford Road, at RaymondRiver gauge, Lamprey River	10.4 cfs	Low	−1.3 cfs	18 mi
Mousam River near West Kennebunk, MaineRiver gauge, Mousam River	98.5 cfs	Normal	+2.2 cfs	20 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 Isinglass River at Rochester Neck Road, near Dover today?

On Oct 21, 2026, 03:15 AM EDT, the water level was 3.80 ft. Down 0.04 ft over the last 24 hours.

Is Isinglass River at Rochester Neck Road, near Dover rising or falling?

Down 0.04 ft over the last 24 hours.

Is the level of Isinglass River at Rochester Neck Road, near Dover normal?

Normal for late October. Compared with 5 years of daily readings for this time of year.

What is the highest water level ever recorded at Isinglass River at Rochester Neck Road, near Dover?

The highest level on record is 21.81 ft on April 17, 2007.

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:01072870 (Agency page)
Coordinates: 43.23480, -70.95645 (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	3.80 ft	2026-10-21 07:15	Provisional
Flow	63.0 cfs	2026-10-21 07:15	Provisional
Water temperature	46 °F	2026-10-21 07:15	Provisional

Download

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How to cite

U.S. Geological Survey: Isinglass River at Rochester Neck Road, near Dover (usgs:01072870). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/new-hampshire/isinglass-river-at-rochester-neck-road-near-dover

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