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Hydrograph River at a Glance Download
Great Chazy River at Perry Mills Stage (ft)Flow (kcfs)Highest Forecast: 3.3 ft 7:00AM Jan 17, 2018Highest Forecast: 3.3 ft 1:00PM Jan 17, 2018Forecast: 3.2 ft 7:00PM Jan 17, 2018Forecast: 3.2 ft 1:00AM Jan 18, 2018Forecast: 3.2 ft 7:00AM Jan 18, 2018Forecast: 3.2 ft 1:00PM Jan 18, 2018Forecast: 3.1 ft 7:00PM Jan 18, 2018Forecast: 3.1 ft 1:00AM Jan 19, 2018Forecast: 3.1 ft 7:00AM Jan 19, 2018USGS--Water Resources of the United StatesCZRN6(plotting HGIRG) Graph Created (2:15AM Jan 17, 2018)ObservedForecast (issued 11:09AM Jan 16)Latest observed value: 0 ft at 9:45 PM EST 13-Jan-2018. Flood Stage is 9 ft
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Tabular Data (UTC)
Tabular Data (EST)
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Datum: Not Available
NOTE: Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.

NOTE: Forecasts for the Great Chazy River at Perry Mills are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 10
Flood Stage: 9
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 12.91 ft on 02/28/2000
(2) 12.24 ft on 11/09/1996
(3) 11.65 ft on 03/15/2007
(4) 11.50 ft on 03/09/1946
(5) 11.37 ft on 12/29/2008
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(P): Preliminary values subject to further review.

Recent Crests
(1) 10.73 ft on 04/09/2014
(2) 9.67 ft on 02/01/2013
(3) 9.50 ft on 08/29/2011
(4) 7.29 ft on 04/27/2011
(5) 11.37 ft on 12/29/2008
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:14
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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If you notice any errors in the below information, please contact our Webmaster
12 Homes along Perry Mills Road and Creek Road in Perry Mills will be inundated. Downstream at Champlain Village, homes and businesses along Main Street, Water Street, and River Street will flood. Flooding in Mooers is likely, and portions of Routes 9 and 11 will be covered with water.
10 Water will approach homes in Perry Mills. Perry Mills Road and Creek Road in the vicinity of Perry Mills will flood, and water will partially cover Route 11 south of Perry Mills.
9 Water covers Perry Mills Road and Creek Road in the vicinity of Perry Mills.
(1) Great Chazy at Perry Mills gage house
(2) River ice at CZRN6
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Latitude: 45.000000° N, Longitude: 73.501389° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 9 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 164.93 ft 173.93 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics. 

Click individual graphics to enlarge.

Water Temperature Plot for CZRN6
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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Burlington Weather Forecast Office
1200 Airport Drive
South Burlington, VT 05403
(802) 862-2475
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Page last modified: 21-Dec-2016 5:21 PM
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