A small USGS stream gaging station with an antenna on its roof under a cloudy evening sky

Check a river’s flow.

Search any USGS stream gauge by river or station name, by state, or near you. Each card shows the latest flow and how it compares with the normal range for today’s date; open a gauge for the full picture: trend, water temperature and what it means for trout, safety and the official NWS flood stage.

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5 USGS gauges near your location (within 30 miles)

GREAT CHAZY RIVER AT PERRY MILLS NY

USGS 04271500

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 94.7 ft³/s
Gauge height: 1.92 ft

Normal for Nov 5 Steady · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 7:00 PM EST	94.7	1.92
Nov 5, 6:00 PM EST	94.7	1.92
Nov 5, 5:00 PM EST	94.7	1.92
Nov 5, 4:00 PM EST	94.7	1.92
Nov 5, 3:00 PM EST	94.7	1.92
Nov 5, 2:00 PM EST	94.7	1.92
Nov 5, 1:00 PM EST	94.7	1.92
Nov 5, 12:00 PM EST	94.7	1.92
Nov 5, 11:00 AM EST	94.7	1.92
Nov 5, 10:00 AM EST	94.7	1.92
Nov 5, 9:00 AM EST	94.7	1.92
Nov 5, 8:00 AM EST	94.7	1.92
Nov 5, 7:00 AM EST	94.7	1.92
Nov 5, 6:00 AM EST	94.7	1.92
Nov 5, 5:00 AM EST	94.7	1.92
Nov 5, 4:00 AM EST	94.7	1.92
Nov 5, 3:00 AM EST	94.7	1.92
Nov 5, 2:00 AM EST	92.9	1.91
Nov 5, 1:00 AM EST	92.9	1.91
Nov 5, 12:00 AM EST	92.9	1.91
Nov 4, 11:00 PM EST	91.1	1.9
Nov 4, 10:00 PM EST	91.1	1.9
Nov 4, 9:00 PM EST	91.1	1.9
Nov 4, 8:00 PM EST	91.1	1.9
Nov 4, 7:00 PM EST	91.1	1.9
Nov 4, 6:00 PM EST	91.1	1.9
Nov 4, 5:00 PM EST	91.1	1.9

Reading Nov 5, 7:00 PM EST · checked 7:19 PM EST

Open full screen USGS NWS

16.5 miles away in a straight line

LITTLE CHAZY RIVER NEAR CHAZY NY

USGS 04271815

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 12.1 ft³/s
Gauge height: 1.88 ft

Below normal for Nov 5 Steady · 24 h

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 6:15 PM EST	12.1	1.88
Nov 5, 5:15 PM EST	12.1	1.88
Nov 5, 4:15 PM EST	12.1	1.88
Nov 5, 3:15 PM EST	12.1	1.88
Nov 5, 2:15 PM EST	11.7	1.87
Nov 5, 1:15 PM EST	11.7	1.87
Nov 5, 12:15 PM EST	11.7	1.87
Nov 5, 11:15 AM EST	11.7	1.87
Nov 5, 10:15 AM EST	11.7	1.87
Nov 5, 9:15 AM EST	11.7	1.87
Nov 5, 8:15 AM EST	12.1	1.88
Nov 5, 7:15 AM EST	12.1	1.88
Nov 5, 6:15 AM EST	12.1	1.88
Nov 5, 5:15 AM EST	12.1	1.88
Nov 5, 4:15 AM EST	12.1	1.88
Nov 5, 3:15 AM EST	12.1	1.88
Nov 5, 2:15 AM EST	12.1	1.88
Nov 5, 1:15 AM EST	12.1	1.88
Nov 5, 12:15 AM EST	12.1	1.88
Nov 4, 11:15 PM EST	12.1	1.88
Nov 4, 10:15 PM EST	11.7	1.87
Nov 4, 9:15 PM EST	11.7	1.87
Nov 4, 8:15 PM EST	11.7	1.87
Nov 4, 7:15 PM EST	11.3	1.86
Nov 4, 6:15 PM EST	11.3	1.86
Nov 4, 5:15 PM EST	11.3	1.86
Nov 4, 4:15 PM EST	11.3	1.86

SARANAC RIVER AT PLATTSBURGH NY

USGS 04273500

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 450 ft³/s
Gauge height: 3.21 ft

Normal for Nov 5 Falling · 24 h Below NWS action stage

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 6:30 PM EST	450	3.21
Nov 5, 5:30 PM EST	450	3.21
Nov 5, 4:30 PM EST	475	3.26
Nov 5, 3:30 PM EST	491	3.3
Nov 5, 2:30 PM EST	485	3.29
Nov 5, 1:30 PM EST	517	3.35
Nov 5, 12:30 PM EST	533	3.38
Nov 5, 11:30 AM EST	528	3.37
Nov 5, 10:30 AM EST	550	3.41
Nov 5, 9:30 AM EST	578	3.46
Nov 5, 8:30 AM EST	578	3.46
Nov 5, 7:30 AM EST	578	3.46
Nov 5, 6:30 AM EST	606	3.52
Nov 5, 5:30 AM EST	601	3.5
Nov 5, 4:30 AM EST	578	3.46
Nov 5, 3:30 AM EST	566	3.44
Nov 5, 2:30 AM EST	566	3.44
Nov 5, 1:30 AM EST	550	3.41
Nov 5, 12:30 AM EST	533	3.38
Nov 4, 11:30 PM EST	539	3.39
Nov 4, 10:30 PM EST	583	3.47
Nov 4, 9:30 PM EST	578	3.46
Nov 4, 8:30 PM EST	578	3.46
Nov 4, 7:30 PM EST	595	3.49
Nov 4, 6:30 PM EST	589	3.48
Nov 4, 5:30 PM EST	512	3.34
Nov 4, 4:30 PM EST	475	3.26

SALMON RIVER AT SOUTH PLATTSBURGH NY

USGS 04273700

Limited data: Normal flow for the date: no water temperature here

No water temperature here. The full view adds the NWS forecast.

Discharge: 24.3 ft³/s
Gauge height: 0.8 ft

Below normal for Nov 5 Steady · 24 h

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 6:15 PM EST	24.3	0.8
Nov 5, 5:15 PM EST	24.3	0.8
Nov 5, 4:15 PM EST	24.3	0.8
Nov 5, 3:15 PM EST	24.3	0.8
Nov 5, 2:15 PM EST	24.3	0.8
Nov 5, 1:15 PM EST	24.3	0.8
Nov 5, 12:15 PM EST	24.3	0.8
Nov 5, 11:15 AM EST	24.9	0.81
Nov 5, 10:15 AM EST	24.9	0.81
Nov 5, 9:15 AM EST	24.9	0.81
Nov 5, 8:15 AM EST	24.9	0.81
Nov 5, 7:15 AM EST	24.9	0.81
Nov 5, 6:15 AM EST	24.9	0.81
Nov 5, 5:15 AM EST	24.9	0.81
Nov 5, 4:15 AM EST	24.9	0.81
Nov 5, 3:15 AM EST	24.9	0.81
Nov 5, 2:15 AM EST	24.9	0.81
Nov 5, 1:15 AM EST	24.9	0.81
Nov 5, 12:15 AM EST	24.3	0.8
Nov 4, 11:15 PM EST	24.3	0.8
Nov 4, 10:15 PM EST	24.3	0.8
Nov 4, 9:15 PM EST	24.3	0.8
Nov 4, 8:15 PM EST	24.3	0.8
Nov 4, 7:15 PM EST	24.3	0.8
Nov 4, 6:15 PM EST	24.3	0.8
Nov 4, 5:15 PM EST	24.3	0.8
Nov 4, 4:15 PM EST	24.9	0.81

LITTLE AUSABLE RIVER NEAR VALCOUR NY

USGS 04273800

Caution: Low water: go quiet and stealthy

No water temperature here. The full view adds the NWS forecast.

Discharge: 16.9 ft³/s
Gauge height: 1.25 ft

Much below normal for Nov 5 Steady · 24 h

Last 24 hours

View data as a table

Discharge, last 7 days: readings, about hourly, newest first. USGS provisional data may be revised.
Time	Discharge (ft³/s)	Gauge height (ft)
Nov 5, 6:15 PM EST	16.9	1.25
Nov 5, 5:15 PM EST	16.9	1.25
Nov 5, 4:15 PM EST	16.9	1.25
Nov 5, 3:15 PM EST	16.9	1.25
Nov 5, 2:15 PM EST	16.9	1.25
Nov 5, 1:15 PM EST	16.9	1.25
Nov 5, 12:15 PM EST	16.9	1.25
Nov 5, 11:15 AM EST	16.9	1.25
Nov 5, 10:15 AM EST	16.9	1.25
Nov 5, 9:15 AM EST	16.2	1.24
Nov 5, 8:15 AM EST	16.9	1.25
Nov 5, 7:15 AM EST	16.9	1.25
Nov 5, 6:15 AM EST	16.9	1.25
Nov 5, 5:15 AM EST	16.2	1.24
Nov 5, 4:15 AM EST	16.2	1.24
Nov 5, 3:15 AM EST	16.2	1.24
Nov 5, 2:15 AM EST	16.9	1.25
Nov 5, 1:15 AM EST	16.9	1.25
Nov 5, 12:15 AM EST	16.9	1.25
Nov 4, 11:15 PM EST	16.9	1.25
Nov 4, 10:15 PM EST	16.9	1.25
Nov 4, 9:15 PM EST	16.9	1.25
Nov 4, 8:15 PM EST	16.9	1.25
Nov 4, 7:15 PM EST	16.9	1.25
Nov 4, 6:15 PM EST	17.7	1.26
Nov 4, 5:15 PM EST	16.9	1.25
Nov 4, 4:15 PM EST	16.9	1.25

Checked Nov 5, 7:19 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.

GREAT CHAZY RIVER AT PERRY MILLS NY
USGS 04271500 · NY · live flow · gauge height · 16.5 mi
Reading the gauge…
LITTLE CHAZY RIVER NEAR CHAZY NY
USGS 04271815 · NY · live flow · gauge height · 19.2 mi
Reading the gauge…
SARANAC RIVER AT PLATTSBURGH NY
USGS 04273500 · NY · live flow · gauge height · 22.2 mi
Reading the gauge…
SALMON RIVER AT SOUTH PLATTSBURGH NY
USGS 04273700 · NY · live flow · gauge height · 23.4 mi
Reading the gauge…
LITTLE AUSABLE RIVER NEAR VALCOUR NY
USGS 04273800 · NY · live flow · gauge height · 25.9 mi
Reading the gauge…

Quick picks: our 2,852 waters by state

Each state opens its USGS gauges and our water pages there; a water opens the live cards for its gauges, or the NOAA tides for flats and surf.

Search covers 11,178 USGS stream gauges that reported discharge, gauge height or water temperature in the 183 days before 2026-10-23 (USGS series catalog); readings are fetched live when a gauge is shown.

Where these numbers come from

Discharge, gauge height, water temperature and water quality: U.S. Geological Survey readings (provisional, can be revised), cached for 15 minutes. Where USGS publishes a gauge’s flow only once a day, the latest daily mean is shown with its date.
Normal range: the 25th to 75th percentile of daily mean flow for the same calendar day over the gauge’s record (USGS daily statistics), classed as USGS does (hyswap).
Temperature guidance for trout quotes the gauge’s own state fish and wildlife agency; where we found none, it says so and quotes federal guidance (National Park Service, U.S. Fish and Wildlife Service). Cold-water safety quotes the NWS; dissolved oxygen and pH are read against EPA criteria. Each line names its source.
Flood stage and forecasts: the National Weather Service’s National Water Prediction Service and its Turn Around Don’t Drown guidance. Tides: NOAA Tides & Currents.

General guidance, not a fishing forecast, a safety guarantee or a statement about access. Planning a trip? The trip planner shows these readings on every day you fish a water.