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Hydrograph River at a Glance Download
West Branch Oswegatchie River near Harrisville Stage (ft)Flow (kcfs)Observed: 4.34 ft at 12:00PM Mar 27, 2023Highest Observation: 4.35 ft at 12:15PM Mar 27, 2023Highest Observation: 4.35 ft at 12:30PM Mar 27, 2023Observed: 4.34 ft at 12:45PM Mar 27, 2023Observed: 4.34 ft at 1:00PM Mar 27, 2023Observed: 4.34 ft at 1:15PM Mar 27, 2023Observed: 4.34 ft at 1:30PM Mar 27, 2023Observed: 4.34 ft at 1:45PM Mar 27, 2023Observed: 4.33 ft at 2:00PM Mar 27, 2023Observed: 4.34 ft at 2:15PM Mar 27, 2023Observed: 4.33 ft at 2:30PM Mar 27, 2023Observed: 4.32 ft at 2:45PM Mar 27, 2023Observed: 4.32 ft at 3:00PM Mar 27, 2023Observed: 4.32 ft at 3:15PM Mar 27, 2023Observed: 4.31 ft at 3:30PM Mar 27, 2023Observed: 4.32 ft at 3:45PM Mar 27, 2023Observed: 4.31 ft at 4:00PM Mar 27, 2023Observed: 4.31 ft at 4:15PM Mar 27, 2023Observed: 4.31 ft at 4:30PM Mar 27, 2023Observed: 4.3 ft at 4:45PM Mar 27, 2023Observed: 4.3 ft at 5:00PM Mar 27, 2023Observed: 4.3 ft at 5:15PM Mar 27, 2023Observed: 4.29 ft at 5:30PM Mar 27, 2023Observed: 4.29 ft at 5:45PM Mar 27, 2023Observed: 4.28 ft at 6:00PM Mar 27, 2023Observed: 4.29 ft at 6:15PM Mar 27, 2023Observed: 4.28 ft at 6:30PM Mar 27, 2023Observed: 4.28 ft at 6:45PM Mar 27, 2023Observed: 4.28 ft at 7:00PM Mar 27, 2023Observed: 4.28 ft at 7:15PM Mar 27, 2023Observed: 4.28 ft at 7:30PM Mar 27, 2023Observed: 4.27 ft at 7:45PM Mar 27, 2023Observed: 4.27 ft at 8:00PM Mar 27, 2023Observed: 4.27 ft at 8:15PM Mar 27, 2023Observed: 4.26 ft at 8:30PM Mar 27, 2023Observed: 4.26 ft at 8:45PM Mar 27, 2023Observed: 4.26 ft at 9:00PM Mar 27, 2023Observed: 4.26 ft at 9:15PM Mar 27, 2023Observed: 4.25 ft at 9:30PM Mar 27, 2023Observed: 4.26 ft at 9:45PM Mar 27, 2023Observed: 4.25 ft at 10:00PM Mar 27, 2023Observed: 4.25 ft at 10:15PM Mar 27, 2023Observed: 4.25 ft at 10:30PM Mar 27, 2023Observed: 4.25 ft at 10:45PM Mar 27, 2023Observed: 4.25 ft at 11:00PM Mar 27, 2023Observed: 4.25 ft at 11:15PM Mar 27, 2023Observed: 4.24 ft at 11:30PM Mar 27, 2023Observed: 4.24 ft at 11:45PM Mar 27, 2023Observed: 4.24 ft at 12:00AM Mar 28, 2023Observed: 4.24 ft at 12:15AM Mar 28, 2023Observed: 4.23 ft at 12:30AM Mar 28, 2023Observed: 4.23 ft at 12:45AM Mar 28, 2023Observed: 4.22 ft at 1:00AM Mar 28, 2023Observed: 4.22 ft at 1:15AM Mar 28, 2023Observed: 4.22 ft at 1:30AM Mar 28, 2023Observed: 4.22 ft at 1:45AM Mar 28, 2023Observed: 4.22 ft at 2:00AM Mar 28, 2023Observed: 4.21 ft at 2:15AM Mar 28, 2023Observed: 4.21 ft at 2:30AM Mar 28, 2023Observed: 4.21 ft at 2:45AM Mar 28, 2023Observed: 4.2 ft at 3:00AM Mar 28, 2023Observed: 4.2 ft at 3:15AM Mar 28, 2023Observed: 4.2 ft at 3:30AM Mar 28, 2023Observed: 4.19 ft at 3:45AM Mar 28, 2023Observed: 4.19 ft at 4:00AM Mar 28, 2023Observed: 4.19 ft at 4:15AM Mar 28, 2023Observed: 4.18 ft at 4:30AM Mar 28, 2023Observed: 4.18 ft at 4:45AM Mar 28, 2023Observed: 4.18 ft at 5:00AM Mar 28, 2023Observed: 4.17 ft at 5:15AM Mar 28, 2023Observed: 4.17 ft at 5:30AM Mar 28, 2023Observed: 4.17 ft at 5:45AM Mar 28, 2023Observed: 4.17 ft at 6:00AM Mar 28, 2023Observed: 4.16 ft at 6:15AM Mar 28, 2023Observed: 4.16 ft at 6:30AM Mar 28, 2023Observed: 4.15 ft at 6:45AM Mar 28, 2023Observed: 4.15 ft at 7:00AM Mar 28, 2023Observed: 4.15 ft at 7:15AM Mar 28, 2023Observed: 4.14 ft at 7:30AM Mar 28, 2023Observed: 4.14 ft at 7:45AM Mar 28, 2023Observed: 4.14 ft at 8:00AM Mar 28, 2023Observed: 4.13 ft at 8:15AM Mar 28, 2023Observed: 4.13 ft at 8:30AM Mar 28, 2023Observed: 4.13 ft at 8:45AM Mar 28, 2023Observed: 4.13 ft at 9:00AM Mar 28, 2023Observed: 4.12 ft at 9:15AM Mar 28, 2023Observed: 4.11 ft at 9:30AM Mar 28, 2023Observed: 4.11 ft at 9:45AM Mar 28, 2023Observed: 4.11 ft at 10:00AM Mar 28, 2023Observed: 4.11 ft at 10:15AM Mar 28, 2023Observed: 4.1 ft at 10:30AM Mar 28, 2023Observed: 4.1 ft at 10:45AM Mar 28, 2023Observed: 4.1 ft at 11:00AM Mar 28, 2023Observed: 4.09 ft at 11:15AM Mar 28, 2023Observed: 4.09 ft at 11:30AM Mar 28, 2023Observed: 4.09 ft at 11:45AM Mar 28, 2023Observed: 4.09 ft at 12:00PM Mar 28, 2023Observed: 4.08 ft at 12:15PM Mar 28, 2023Observed: 4.08 ft at 12:30PM Mar 28, 2023Observed: 4.08 ft at 12:45PM Mar 28, 2023Observed: 4.07 ft at 1:00PM Mar 28, 2023Observed: 4.07 ft at 1:15PM Mar 28, 2023Observed: 4.07 ft at 1:30PM Mar 28, 2023Observed: 4.07 ft at 1:45PM Mar 28, 2023Observed: 4.06 ft at 2:00PM Mar 28, 2023Observed: 4.06 ft at 2:15PM Mar 28, 2023Observed: 4.05 ft at 2:30PM Mar 28, 2023Observed: 4.06 ft at 2:45PM Mar 28, 2023Observed: 4.05 ft at 3:00PM Mar 28, 2023Observed: 4.05 ft at 3:15PM Mar 28, 2023Observed: 4.05 ft at 3:30PM Mar 28, 2023Observed: 4.04 ft at 3:45PM Mar 28, 2023Observed: 4.04 ft at 4:00PM Mar 28, 2023Observed: 4.03 ft at 4:15PM Mar 28, 2023Observed: 4.03 ft at 4:30PM Mar 28, 2023Observed: 4.03 ft at 4:45PM Mar 28, 2023Observed: 4.03 ft at 5:00PM Mar 28, 2023Observed: 4.03 ft at 5:15PM Mar 28, 2023Observed: 4.02 ft at 5:30PM Mar 28, 2023Observed: 4.02 ft at 5:45PM Mar 28, 2023Observed: 4.01 ft at 6:00PM Mar 28, 2023Observed: 4.01 ft at 6:15PM Mar 28, 2023Observed: 4.01 ft at 6:30PM Mar 28, 2023Observed: 4 ft at 6:45PM Mar 28, 2023Observed: 4 ft at 7:00PM Mar 28, 2023Observed: 4 ft at 7:15PM Mar 28, 2023Observed: 3.99 ft at 7:30PM Mar 28, 2023Observed: 3.99 ft at 7:45PM Mar 28, 2023Observed: 3.99 ft at 8:00PM Mar 28, 2023Observed: 3.99 ft at 8:15PM Mar 28, 2023Observed: 3.98 ft at 8:30PM Mar 28, 2023Observed: 3.98 ft at 8:45PM Mar 28, 2023Observed: 3.98 ft at 9:00PM Mar 28, 2023Observed: 3.98 ft at 9:15PM Mar 28, 2023Observed: 3.97 ft at 9:30PM Mar 28, 2023Observed: 3.97 ft at 9:45PM Mar 28, 2023Observed: 3.97 ft at 10:00PM Mar 28, 2023Observed: 3.96 ft at 10:15PM Mar 28, 2023Observed: 3.96 ft at 10:30PM Mar 28, 2023Observed: 3.96 ft at 10:45PM Mar 28, 2023Observed: 3.96 ft at 11:00PM Mar 28, 2023Observed: 3.95 ft at 11:15PM Mar 28, 2023Observed: 3.95 ft at 11:30PM Mar 28, 2023Observed: 3.95 ft at 11:45PM Mar 28, 2023Observed: 3.95 ft at 12:00AM Mar 29, 2023Observed: 3.94 ft at 12:15AM Mar 29, 2023Observed: 3.94 ft at 12:30AM Mar 29, 2023Observed: 3.93 ft at 12:45AM Mar 29, 2023Observed: 3.93 ft at 1:00AM Mar 29, 2023Observed: 3.93 ft at 1:15AM Mar 29, 2023Observed: 3.93 ft at 1:30AM Mar 29, 2023Observed: 3.92 ft at 1:45AM Mar 29, 2023Observed: 3.92 ft at 2:00AM Mar 29, 2023Observed: 3.92 ft at 2:15AM Mar 29, 2023Observed: 3.91 ft at 2:30AM Mar 29, 2023Observed: 3.91 ft at 2:45AM Mar 29, 2023Observed: 3.91 ft at 3:00AM Mar 29, 2023Observed: 3.91 ft at 3:15AM Mar 29, 2023Observed: 3.9 ft at 3:30AM Mar 29, 2023Observed: 3.9 ft at 3:45AM Mar 29, 2023Observed: 3.9 ft at 4:00AM Mar 29, 2023Observed: 3.89 ft at 4:15AM Mar 29, 2023Observed: 3.89 ft at 4:30AM Mar 29, 2023Observed: 3.89 ft at 4:45AM Mar 29, 2023Observed: 3.88 ft at 5:00AM Mar 29, 2023Observed: 3.88 ft at 5:15AM Mar 29, 2023Observed: 3.88 ft at 5:30AM Mar 29, 2023Observed: 3.88 ft at 5:45AM Mar 29, 2023Observed: 3.87 ft at 6:00AM Mar 29, 2023Observed: 3.87 ft at 6:15AM Mar 29, 2023Observed: 3.87 ft at 6:30AM Mar 29, 2023Observed: 3.87 ft at 6:45AM Mar 29, 2023Observed: 3.86 ft at 7:00AM Mar 29, 2023Observed: 3.86 ft at 7:15AM Mar 29, 2023Observed: 3.86 ft at 7:30AM Mar 29, 2023Observed: 3.85 ft at 7:45AM Mar 29, 2023Observed: 3.85 ft at 8:00AM Mar 29, 2023Observed: 3.85 ft at 8:15AM Mar 29, 2023Observed: 3.85 ft at 8:30AM Mar 29, 2023Observed: 3.76 ft at 5:45PM Mar 29, 2023Observed: 3.75 ft at 6:00PM Mar 29, 2023Observed: 3.75 ft at 6:15PM Mar 29, 2023Observed: 3.75 ft at 6:30PM Mar 29, 2023Observed: 3.74 ft at 6:45PM Mar 29, 2023Observed: 3.74 ft at 7:00PM Mar 29, 2023Observed: 3.74 ft at 7:15PM Mar 29, 2023Observed: 3.73 ft at 7:30PM Mar 29, 2023Observed: 3.74 ft at 7:45PM Mar 29, 2023Observed: 3.74 ft at 8:00PM Mar 29, 2023Observed: 3.73 ft at 8:15PM Mar 29, 2023Observed: 3.73 ft at 8:30PM Mar 29, 2023Observed: 3.73 ft at 8:45PM Mar 29, 2023Observed: 3.72 ft at 9:00PM Mar 29, 2023Observed: 3.73 ft at 9:15PM Mar 29, 2023Observed: 3.72 ft at 9:30PM Mar 29, 2023Observed: 3.72 ft at 9:45PM Mar 29, 2023Observed: 3.72 ft at 10:00PM Mar 29, 2023Observed: 3.72 ft at 10:15PM Mar 29, 2023Observed: 3.71 ft at 10:30PM Mar 29, 2023Observed: 3.71 ft at 10:45PM Mar 29, 2023Observed: 3.71 ft at 11:00PM Mar 29, 2023Observed: 3.71 ft at 11:15PM Mar 29, 2023Observed: 3.71 ft at 11:30PM Mar 29, 2023Observed: 3.71 ft at 11:45PM Mar 29, 2023Observed: 3.71 ft at 12:00AM Mar 30, 2023Observed: 3.7 ft at 12:15AM Mar 30, 2023Observed: 3.7 ft at 12:30AM Mar 30, 2023Observed: 3.7 ft at 12:45AM Mar 30, 2023Observed: 3.7 ft at 1:00AM Mar 30, 2023Observed: 3.7 ft at 1:15AM Mar 30, 2023Observed: 3.7 ft at 1:30AM Mar 30, 2023Observed: 3.7 ft at 1:45AM Mar 30, 2023Observed: 3.7 ft at 2:00AM Mar 30, 2023Observed: 3.69 ft at 2:15AM Mar 30, 2023Observed: 3.69 ft at 2:30AM Mar 30, 2023Observed: 3.69 ft at 2:45AM Mar 30, 2023Observed: 3.69 ft at 3:00AM Mar 30, 2023Observed: 3.69 ft at 3:15AM Mar 30, 2023Observed: 3.69 ft at 3:30AM Mar 30, 2023Observed: 3.68 ft at 3:45AM Mar 30, 2023Observed: 3.69 ft at 4:00AM Mar 30, 2023Observed: 3.68 ft at 4:15AM Mar 30, 2023Observed: 3.68 ft at 4:30AM Mar 30, 2023Observed: 3.68 ft at 4:45AM Mar 30, 2023Observed: 3.68 ft at 5:00AM Mar 30, 2023Observed: 3.68 ft at 5:15AM Mar 30, 2023Observed: 3.68 ft at 5:30AM Mar 30, 2023Observed: 3.68 ft at 5:45AM Mar 30, 2023Observed: 3.68 ft at 6:00AM Mar 30, 2023Observed: 3.68 ft at 6:15AM Mar 30, 2023Observed: 3.68 ft at 6:30AM Mar 30, 2023Observed: 3.67 ft at 6:45AM Mar 30, 2023Observed: 3.68 ft at 7:00AM Mar 30, 2023Observed: 3.68 ft at 7:15AM Mar 30, 2023Observed: 3.67 ft at 7:30AM Mar 30, 2023Observed: 3.68 ft at 7:45AM Mar 30, 2023Observed: 3.67 ft at 8:00AM Mar 30, 2023Observed: 3.67 ft at 8:15AM Mar 30, 2023Observed: 3.67 ft at 8:30AM Mar 30, 2023Observed: 3.67 ft at 8:45AM Mar 30, 2023Observed: 3.67 ft at 9:00AM Mar 30, 2023Observed: 3.67 ft at 9:15AM Mar 30, 2023Observed: 3.67 ft at 9:30AM Mar 30, 2023Observed: 3.66 ft at 9:45AM Mar 30, 2023Observed: 3.66 ft at 10:00AM Mar 30, 2023Observed: 3.66 ft at 10:15AM Mar 30, 2023Observed: 3.66 ft at 10:30AM Mar 30, 2023Forecast: 3.7 ft 2:00PM Mar 30, 2023Forecast: 3.7 ft 8:00PM Mar 30, 2023Forecast: 3.7 ft 2:00AM Mar 31, 2023Forecast: 3.7 ft 8:00AM Mar 31, 2023Forecast: 3.6 ft 2:00PM Mar 31, 2023Forecast: 3.6 ft 8:00PM Mar 31, 2023Forecast: 3.6 ft 2:00AM Apr 01, 2023Forecast: 3.5 ft 8:00AM Apr 01, 2023Forecast: 3.7 ft 2:00PM Apr 01, 2023Forecast: 4 ft 8:00PM Apr 01, 2023Forecast: 4.5 ft 2:00AM Apr 02, 2023Highest Forecast: 4.9 ft 8:00AM Apr 02, 2023USGS--Water Resources of the United StatesHVLN6(plotting HGIRG) Graph Created (11:46AM Mar 30, 2023)ObservedForecast (issued 11:11AM Mar 30)Latest observed value: 3.66 ft at 10:30 AM EDT 30-Mar-2023.
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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 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 738.51 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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