Carmans River at Yaphank water level

Name: Carmans River at Yaphank 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, Carmans River, New York, United States

Directions

Very low for mid-October

Water level

1.08ft Steady over the last 24 hours

Measured Oct 18, 2026, 10:00 AM EDT (52 min ago)

Flow: 12.9 cfs

History

7 days

Water level

What this means

The Carmans River at Yaphank is running far below normal at 1.08 ft.

It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. In the last month it has stayed between 1.08 ft and 1.10 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

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

Floating and fishing near Carmans River at Yaphank

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Weather at the gauge

Rain in the last 3 days: 0.15 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 55° 40° – Wind 9 mph

19 Mon 58° 42° – Wind 13 mph

20 Tue 64° 51° – Wind 14 mph

21 Wed 57° 47° – Wind 14 mph

22 Thu 65° 43° – Wind 10 mph

23 Fri 55° 46° – Wind 12 mph

24 Sat 53° 40° – Wind 8 mph

Forecast: Open-Meteo

Sunrise 07:07 AM Sunset 06:08 PM Daylight 11 hr, 2 min First quarter 50%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Swan River at East PatchogueRiver gauge, Swan River	12.0 cfs	Normal	±0	6 mi
Peconic River at RiverheadRiver gauge, Peconic River	21.4 cfs	Normal	−2.3 cfs	13 mi
Connetquot Brook near Central IslipRiver gauge, Connetquot Brook	23.4 cfs	Normal	−0.8 cfs	14 mi
Laurel Lake near MattituckLake, Laurel Lake	4.33 ft	Very low	−0.02 ft	21 mi
Sampawams Creek at BabylonRiver gauge, Sampawams Creek	7.1 cfs	Normal	−0.8 cfs	23 mi
Carlls River at BabylonRiver gauge, Carlls River	14.9 cfs	Normal	−2.2 cfs	24 mi
Rooster River at FairfieldRiver gauge, Rooster River	13.4 cfs	High	−1.1 cfs	29 mi
Cold Spring Brook at Cold Spring HarborRiver gauge, Cold Spring Brook	1.3 cfs	Low	±0	29 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 Carmans River at Yaphank today?

On Oct 18, 2026, 10:00 AM EDT, the water level was 1.08 ft. Steady over the last 24 hours.

Is Carmans River at Yaphank rising or falling?

Steady over the last 24 hours.

Is the level of Carmans River at Yaphank normal?

Very low 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:01305000 (Agency page)
Coordinates: 40.83017, -72.90614 (WGS84)
Vertical datum: NGVD29
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	1.08 ft	2026-10-18 14:00	Provisional
Flow	12.9 cfs	2026-10-18 14:00	Provisional

Download

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How to cite

U.S. Geological Survey: Carmans River at Yaphank (usgs:01305000). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/new-york/carmans-river-at-yaphank

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