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Hydrograph River at a Glance Download
West Branch Oswegatchie River near Harrisville Stage (ft)Flow (kcfs)Observed: 4.01 ft at 5:15AM Apr 13, 2024Observed: 4.02 ft at 5:30AM Apr 13, 2024Observed: 4.03 ft at 5:45AM Apr 13, 2024Observed: 4.04 ft at 6:00AM Apr 13, 2024Observed: 4.05 ft at 6:15AM Apr 13, 2024Observed: 4.05 ft at 6:30AM Apr 13, 2024Observed: 4.06 ft at 6:45AM Apr 13, 2024Observed: 4.06 ft at 7:00AM Apr 13, 2024Observed: 4.07 ft at 7:15AM Apr 13, 2024Observed: 4.08 ft at 7:30AM Apr 13, 2024Observed: 4.08 ft at 7:45AM Apr 13, 2024Observed: 4.09 ft at 8:00AM Apr 13, 2024Observed: 4.1 ft at 8:15AM Apr 13, 2024Observed: 4.11 ft at 8:30AM Apr 13, 2024Observed: 4.11 ft at 8:45AM Apr 13, 2024Observed: 4.12 ft at 9:00AM Apr 13, 2024Observed: 4.13 ft at 9:15AM Apr 13, 2024Observed: 4.14 ft at 9:30AM Apr 13, 2024Observed: 4.15 ft at 9:45AM Apr 13, 2024Observed: 4.15 ft at 10:00AM Apr 13, 2024Observed: 4.16 ft at 10:15AM Apr 13, 2024Observed: 4.17 ft at 10:30AM Apr 13, 2024Observed: 4.17 ft at 10:45AM Apr 13, 2024Observed: 4.18 ft at 11:00AM Apr 13, 2024Observed: 4.19 ft at 11:15AM Apr 13, 2024Observed: 4.2 ft at 11:30AM Apr 13, 2024Observed: 4.2 ft at 11:45AM Apr 13, 2024Observed: 4.21 ft at 12:00PM Apr 13, 2024Observed: 4.21 ft at 12:15PM Apr 13, 2024Observed: 4.22 ft at 12:30PM Apr 13, 2024Observed: 4.23 ft at 12:45PM Apr 13, 2024Observed: 4.24 ft at 1:00PM Apr 13, 2024Observed: 4.24 ft at 1:15PM Apr 13, 2024Observed: 4.24 ft at 1:30PM Apr 13, 2024Observed: 4.25 ft at 1:45PM Apr 13, 2024Observed: 4.26 ft at 2:00PM Apr 13, 2024Observed: 4.27 ft at 2:15PM Apr 13, 2024Observed: 4.28 ft at 2:30PM Apr 13, 2024Observed: 4.28 ft at 2:45PM Apr 13, 2024Observed: 4.29 ft at 3:00PM Apr 13, 2024Observed: 4.29 ft at 3:15PM Apr 13, 2024Observed: 4.3 ft at 3:30PM Apr 13, 2024Observed: 4.31 ft at 3:45PM Apr 13, 2024Observed: 4.31 ft at 4:00PM Apr 13, 2024Observed: 4.32 ft at 4:15PM Apr 13, 2024Observed: 4.32 ft at 4:30PM Apr 13, 2024Observed: 4.34 ft at 4:45PM Apr 13, 2024Observed: 4.34 ft at 5:00PM Apr 13, 2024Observed: 4.35 ft at 5:15PM Apr 13, 2024Observed: 4.36 ft at 5:30PM Apr 13, 2024Observed: 4.36 ft at 5:45PM Apr 13, 2024Observed: 4.37 ft at 6:00PM Apr 13, 2024Observed: 4.38 ft at 6:15PM Apr 13, 2024Observed: 4.39 ft at 6:30PM Apr 13, 2024Observed: 4.39 ft at 6:45PM Apr 13, 2024Observed: 4.4 ft at 7:00PM Apr 13, 2024Observed: 4.41 ft at 7:15PM Apr 13, 2024Observed: 4.41 ft at 7:30PM Apr 13, 2024Observed: 4.42 ft at 7:45PM Apr 13, 2024Observed: 4.42 ft at 8:00PM Apr 13, 2024Observed: 4.43 ft at 8:15PM Apr 13, 2024Observed: 4.44 ft at 8:30PM Apr 13, 2024Observed: 4.44 ft at 8:45PM Apr 13, 2024Observed: 4.45 ft at 9:00PM Apr 13, 2024Observed: 4.45 ft at 9:15PM Apr 13, 2024Observed: 4.46 ft at 9:30PM Apr 13, 2024Observed: 4.46 ft at 9:45PM Apr 13, 2024Observed: 4.47 ft at 10:00PM Apr 13, 2024Observed: 4.47 ft at 10:15PM Apr 13, 2024Observed: 4.49 ft at 10:30PM Apr 13, 2024Observed: 4.49 ft at 10:45PM Apr 13, 2024Observed: 4.5 ft at 11:00PM Apr 13, 2024Observed: 4.5 ft at 11:15PM Apr 13, 2024Observed: 4.5 ft at 11:30PM Apr 13, 2024Observed: 4.51 ft at 11:45PM Apr 13, 2024Observed: 4.51 ft at 12:00AM Apr 14, 2024Observed: 4.51 ft at 12:15AM Apr 14, 2024Observed: 4.52 ft at 12:30AM Apr 14, 2024Observed: 4.53 ft at 12:45AM Apr 14, 2024Observed: 4.53 ft at 1:00AM Apr 14, 2024Observed: 4.55 ft at 1:15AM Apr 14, 2024Observed: 4.55 ft at 1:30AM Apr 14, 2024Observed: 4.55 ft at 1:45AM Apr 14, 2024Observed: 4.55 ft at 2:00AM Apr 14, 2024Observed: 4.56 ft at 2:15AM Apr 14, 2024Observed: 4.57 ft at 2:30AM Apr 14, 2024Observed: 4.57 ft at 2:45AM Apr 14, 2024Observed: 4.57 ft at 3:00AM Apr 14, 2024Observed: 4.58 ft at 3:15AM Apr 14, 2024Observed: 4.59 ft at 3:30AM Apr 14, 2024Observed: 4.59 ft at 3:45AM Apr 14, 2024Observed: 4.59 ft at 4:00AM Apr 14, 2024Observed: 4.6 ft at 4:15AM Apr 14, 2024Observed: 4.61 ft at 4:30AM Apr 14, 2024Observed: 4.61 ft at 4:45AM Apr 14, 2024Observed: 4.62 ft at 5:00AM Apr 14, 2024Observed: 4.62 ft at 5:15AM Apr 14, 2024Observed: 4.62 ft at 5:30AM Apr 14, 2024Observed: 4.63 ft at 5:45AM Apr 14, 2024Observed: 4.63 ft at 6:00AM Apr 14, 2024Observed: 4.63 ft at 6:15AM Apr 14, 2024Observed: 4.64 ft at 6:30AM Apr 14, 2024Observed: 4.65 ft at 6:45AM Apr 14, 2024Observed: 4.65 ft at 7:00AM Apr 14, 2024Observed: 4.65 ft at 7:15AM Apr 14, 2024Observed: 4.66 ft at 7:30AM Apr 14, 2024Observed: 4.66 ft at 7:45AM Apr 14, 2024Observed: 4.67 ft at 8:00AM Apr 14, 2024Observed: 4.67 ft at 8:15AM Apr 14, 2024Observed: 4.68 ft at 8:30AM Apr 14, 2024Observed: 4.68 ft at 8:45AM Apr 14, 2024Observed: 4.69 ft at 9:00AM Apr 14, 2024Observed: 4.69 ft at 9:15AM Apr 14, 2024Observed: 4.7 ft at 9:30AM Apr 14, 2024Observed: 4.71 ft at 9:45AM Apr 14, 2024Observed: 4.71 ft at 10:00AM Apr 14, 2024Observed: 4.71 ft at 10:15AM Apr 14, 2024Observed: 4.72 ft at 10:30AM Apr 14, 2024Observed: 4.72 ft at 10:45AM Apr 14, 2024Observed: 4.73 ft at 11:00AM Apr 14, 2024Observed: 4.73 ft at 11:15AM Apr 14, 2024Observed: 4.74 ft at 11:30AM Apr 14, 2024Observed: 4.75 ft at 11:45AM Apr 14, 2024Observed: 4.75 ft at 12:00PM Apr 14, 2024Observed: 4.75 ft at 12:15PM Apr 14, 2024Observed: 4.76 ft at 12:30PM Apr 14, 2024Observed: 4.76 ft at 12:45PM Apr 14, 2024Observed: 4.77 ft at 1:00PM Apr 14, 2024Observed: 4.77 ft at 1:15PM Apr 14, 2024Observed: 4.77 ft at 1:30PM Apr 14, 2024Observed: 4.78 ft at 1:45PM Apr 14, 2024Observed: 4.78 ft at 2:00PM Apr 14, 2024Observed: 4.78 ft at 2:15PM Apr 14, 2024Observed: 4.79 ft at 2:30PM Apr 14, 2024Observed: 4.79 ft at 2:45PM Apr 14, 2024Observed: 4.8 ft at 3:00PM Apr 14, 2024Observed: 4.81 ft at 3:15PM Apr 14, 2024Observed: 4.81 ft at 3:30PM Apr 14, 2024Observed: 4.81 ft at 3:45PM Apr 14, 2024Observed: 4.81 ft at 4:00PM Apr 14, 2024Observed: 4.82 ft at 4:15PM Apr 14, 2024Observed: 4.82 ft at 4:30PM Apr 14, 2024Observed: 4.83 ft at 4:45PM Apr 14, 2024Observed: 4.83 ft at 5:00PM Apr 14, 2024Observed: 4.83 ft at 5:15PM Apr 14, 2024Observed: 4.83 ft at 5:30PM Apr 14, 2024Observed: 4.84 ft at 5:45PM Apr 14, 2024Observed: 4.84 ft at 6:00PM Apr 14, 2024Observed: 4.85 ft at 6:15PM Apr 14, 2024Observed: 4.84 ft at 6:30PM Apr 14, 2024Observed: 4.85 ft at 6:45PM Apr 14, 2024Observed: 4.85 ft at 7:00PM Apr 14, 2024Observed: 4.86 ft at 7:15PM Apr 14, 2024Observed: 4.86 ft at 7:30PM Apr 14, 2024Observed: 4.86 ft at 7:45PM Apr 14, 2024Observed: 4.86 ft at 8:00PM Apr 14, 2024Observed: 4.86 ft at 8:15PM Apr 14, 2024Observed: 4.87 ft at 8:30PM Apr 14, 2024Observed: 4.87 ft at 8:45PM Apr 14, 2024Observed: 4.87 ft at 9:00PM Apr 14, 2024Observed: 4.87 ft at 9:15PM Apr 14, 2024Observed: 4.87 ft at 9:30PM Apr 14, 2024Observed: 4.87 ft at 9:45PM Apr 14, 2024Observed: 4.87 ft at 10:00PM Apr 14, 2024Highest Observation: 4.88 ft at 10:15PM Apr 14, 2024Highest Observation: 4.88 ft at 10:30PM Apr 14, 2024Highest Observation: 4.88 ft at 10:45PM Apr 14, 2024Highest Observation: 4.88 ft at 11:00PM Apr 14, 2024Highest Observation: 4.88 ft at 11:15PM Apr 14, 2024Highest Observation: 4.88 ft at 11:30PM Apr 14, 2024Highest Observation: 4.88 ft at 11:45PM Apr 14, 2024Highest Observation: 4.88 ft at 12:00AM Apr 15, 2024Highest Observation: 4.88 ft at 12:15AM Apr 15, 2024Highest Observation: 4.88 ft at 12:30AM Apr 15, 2024Highest Observation: 4.88 ft at 1:45AM Apr 15, 2024Highest Observation: 4.88 ft at 2:00AM Apr 15, 2024Highest Observation: 4.88 ft at 2:15AM Apr 15, 2024Observed: 4.87 ft at 2:30AM Apr 15, 2024Highest Observation: 4.88 ft at 2:45AM Apr 15, 2024Highest Observation: 4.88 ft at 3:00AM Apr 15, 2024Observed: 4.87 ft at 3:15AM Apr 15, 2024Observed: 4.87 ft at 3:30AM Apr 15, 2024Observed: 4.87 ft at 3:45AM Apr 15, 2024Observed: 4.87 ft at 4:00AM Apr 15, 2024Observed: 4.87 ft at 4:15AM Apr 15, 2024Observed: 4.87 ft at 4:30AM Apr 15, 2024Observed: 4.86 ft at 4:45AM Apr 15, 2024Observed: 4.87 ft at 5:00AM Apr 15, 2024Observed: 4.86 ft at 5:15AM Apr 15, 2024Observed: 4.86 ft at 5:30AM Apr 15, 2024Observed: 4.86 ft at 5:45AM Apr 15, 2024Observed: 4.86 ft at 6:00AM Apr 15, 2024Observed: 4.86 ft at 6:15AM Apr 15, 2024Observed: 4.86 ft at 6:30AM Apr 15, 2024Observed: 4.85 ft at 6:45AM Apr 15, 2024Observed: 4.85 ft at 7:00AM Apr 15, 2024Observed: 4.85 ft at 7:15AM Apr 15, 2024Observed: 4.85 ft at 7:30AM Apr 15, 2024Observed: 4.85 ft at 7:45AM Apr 15, 2024Observed: 4.84 ft at 8:00AM Apr 15, 2024Observed: 4.84 ft at 8:15AM Apr 15, 2024Observed: 4.84 ft at 8:30AM Apr 15, 2024Observed: 4.84 ft at 8:45AM Apr 15, 2024Observed: 4.82 ft at 9:00AM Apr 15, 2024Observed: 4.83 ft at 9:15AM Apr 15, 2024Observed: 4.83 ft at 9:30AM Apr 15, 2024Observed: 4.83 ft at 9:45AM Apr 15, 2024Observed: 4.82 ft at 10:00AM Apr 15, 2024Observed: 4.82 ft at 10:15AM Apr 15, 2024Observed: 4.82 ft at 10:30AM Apr 15, 2024Observed: 4.82 ft at 10:45AM Apr 15, 2024Observed: 4.81 ft at 11:00AM Apr 15, 2024Observed: 4.81 ft at 11:15AM Apr 15, 2024Observed: 4.81 ft at 11:30AM Apr 15, 2024Observed: 4.81 ft at 11:45AM Apr 15, 2024Observed: 4.8 ft at 12:00PM Apr 15, 2024Observed: 4.8 ft at 12:15PM Apr 15, 2024Observed: 4.79 ft at 12:30PM Apr 15, 2024Observed: 4.8 ft at 12:45PM Apr 15, 2024Observed: 4.78 ft at 1:00PM Apr 15, 2024Observed: 4.78 ft at 1:15PM Apr 15, 2024Observed: 4.78 ft at 1:30PM Apr 15, 2024Observed: 4.78 ft at 1:45PM Apr 15, 2024Observed: 4.77 ft at 2:00PM Apr 15, 2024Observed: 4.77 ft at 2:15PM Apr 15, 2024Observed: 4.77 ft at 2:30PM Apr 15, 2024Observed: 4.76 ft at 2:45PM Apr 15, 2024Observed: 4.76 ft at 3:00PM Apr 15, 2024Observed: 4.75 ft at 3:15PM Apr 15, 2024Observed: 4.75 ft at 3:30PM Apr 15, 2024Observed: 4.75 ft at 3:45PM Apr 15, 2024Observed: 4.75 ft at 4:00PM Apr 15, 2024Observed: 4.75 ft at 4:15PM Apr 15, 2024Observed: 4.73 ft at 4:30PM Apr 15, 2024Observed: 4.74 ft at 4:45PM Apr 15, 2024Observed: 4.73 ft at 5:00PM Apr 15, 2024Observed: 4.73 ft at 5:15PM Apr 15, 2024Observed: 4.72 ft at 5:30PM Apr 15, 2024Observed: 4.71 ft at 5:45PM Apr 15, 2024Observed: 4.71 ft at 6:00PM Apr 15, 2024Observed: 4.71 ft at 6:15PM Apr 15, 2024Observed: 4.7 ft at 6:30PM Apr 15, 2024Observed: 4.7 ft at 6:45PM Apr 15, 2024Observed: 4.7 ft at 7:00PM Apr 15, 2024Observed: 4.69 ft at 7:15PM Apr 15, 2024Observed: 4.69 ft at 7:30PM Apr 15, 2024Observed: 4.68 ft at 7:45PM Apr 15, 2024Observed: 4.68 ft at 8:00PM Apr 15, 2024Observed: 4.67 ft at 8:15PM Apr 15, 2024Observed: 4.67 ft at 8:30PM Apr 15, 2024Observed: 4.67 ft at 8:45PM Apr 15, 2024Observed: 4.66 ft at 9:00PM Apr 15, 2024Observed: 4.66 ft at 9:15PM Apr 15, 2024Observed: 4.66 ft at 9:30PM Apr 15, 2024Observed: 4.65 ft at 9:45PM Apr 15, 2024Observed: 4.64 ft at 10:00PM Apr 15, 2024Observed: 4.64 ft at 10:15PM Apr 15, 2024Observed: 4.63 ft at 10:30PM Apr 15, 2024Observed: 4.63 ft at 10:45PM Apr 15, 2024Observed: 4.63 ft at 11:00PM Apr 15, 2024Observed: 4.62 ft at 11:15PM Apr 15, 2024Observed: 4.63 ft at 11:30PM Apr 15, 2024Observed: 4.61 ft at 11:45PM Apr 15, 2024Observed: 4.61 ft at 12:00AM Apr 16, 2024Observed: 4.61 ft at 12:15AM Apr 16, 2024Observed: 4.61 ft at 12:30AM Apr 16, 2024Observed: 4.6 ft at 12:45AM Apr 16, 2024Observed: 4.6 ft at 1:00AM Apr 16, 2024Observed: 4.59 ft at 1:15AM Apr 16, 2024Observed: 4.58 ft at 1:30AM Apr 16, 2024Observed: 4.58 ft at 1:45AM Apr 16, 2024Observed: 4.58 ft at 2:00AM Apr 16, 2024Observed: 4.57 ft at 2:15AM Apr 16, 2024Observed: 4.57 ft at 2:30AM Apr 16, 2024Observed: 4.57 ft at 2:45AM Apr 16, 2024Observed: 4.55 ft at 3:00AM Apr 16, 2024Observed: 4.55 ft at 3:15AM Apr 16, 2024Observed: 4.55 ft at 3:30AM Apr 16, 2024Observed: 4.54 ft at 3:45AM Apr 16, 2024Observed: 4.53 ft at 4:00AM Apr 16, 2024Observed: 4.53 ft at 4:15AM Apr 16, 2024Observed: 4.53 ft at 4:30AM Apr 16, 2024Highest Forecast: 4.4 ft 8:00AM Apr 16, 2024Forecast: 4.3 ft 2:00PM Apr 16, 2024Forecast: 4.3 ft 8:00PM Apr 16, 2024Forecast: 4.2 ft 2:00AM Apr 17, 2024Forecast: 4.1 ft 8:00AM Apr 17, 2024Forecast: 4.1 ft 2:00PM Apr 17, 2024Forecast: 4 ft 8:00PM Apr 17, 2024Forecast: 4 ft 2:00AM Apr 18, 2024Forecast: 3.9 ft 8:00AM Apr 18, 2024USGS--Water Resources of the United StatesHVLN6(plotting HGIRG) Graph Created (5:00AM Apr 16, 2024)ObservedForecast (issued 11:29AM Apr 15)Latest observed value: 4.53 ft at 4:30 AM EDT 16-Apr-2024.
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.

NOTE: Forecasts for the West Branch Oswegatchie River near Harrisville are issued routinely year-round.

Vertical Datum updated from NGVD29 to NAVD88 by gauge owner.

Return to Area Map
Downstream Gauge Downstream Gauge - near Heuvelton
Flood Categories (in feet)
Not Available

Historic Crests
(1) 10.64 ft on 01/09/1998
(2) 9.60 ft on 01/09/1930
(3) 9.52 ft on 04/11/1993
(4) 9.31 ft on 03/15/1977
(5) 9.28 ft on 04/05/1963
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.08 ft on 04/29/2011
(2) 7.22 ft on 12/29/2008
(3) 6.26 ft on 01/10/2008
(4) 6.24 ft on 03/29/2007
(5) 6.44 ft on 12/01/2005
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
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.
About This Location Collapse

Latitude: 44.185556° N, Longitude: 75.331111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 737.97 ft Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available 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
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
National Weather Service
Burlington Weather Forecast Office
1200 Airport Drive
South Burlington, VT 05403
(802) 862-2475
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