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Hydrograph River at a Glance Download
Contoocook River at Henniker Stage (ft)Flow (kcfs)Observed: 4.43 ft at 11:45PM Jul 23, 2016Observed: 4.44 ft at 12:00AM Jul 24, 2016Observed: 4.43 ft at 12:15AM Jul 24, 2016Observed: 4.43 ft at 12:30AM Jul 24, 2016Observed: 4.43 ft at 12:45AM Jul 24, 2016Observed: 4.43 ft at 1:00AM Jul 24, 2016Observed: 4.43 ft at 1:15AM Jul 24, 2016Observed: 4.43 ft at 1:30AM Jul 24, 2016Observed: 4.43 ft at 1:45AM Jul 24, 2016Observed: 4.43 ft at 2:00AM Jul 24, 2016Observed: 4.42 ft at 2:15AM Jul 24, 2016Observed: 4.43 ft at 2:30AM Jul 24, 2016Observed: 4.43 ft at 2:45AM Jul 24, 2016Observed: 4.42 ft at 3:00AM Jul 24, 2016Observed: 4.43 ft at 3:15AM Jul 24, 2016Observed: 4.43 ft at 3:30AM Jul 24, 2016Observed: 4.42 ft at 3:45AM Jul 24, 2016Observed: 4.43 ft at 4:00AM Jul 24, 2016Observed: 4.42 ft at 4:15AM Jul 24, 2016Observed: 4.42 ft at 4:30AM Jul 24, 2016Observed: 4.42 ft at 4:45AM Jul 24, 2016Observed: 4.42 ft at 5:00AM Jul 24, 2016Observed: 4.42 ft at 5:15AM Jul 24, 2016Observed: 4.42 ft at 5:30AM Jul 24, 2016Observed: 4.42 ft at 5:45AM Jul 24, 2016Observed: 4.42 ft at 6:00AM Jul 24, 2016Observed: 4.42 ft at 6:15AM Jul 24, 2016Observed: 4.42 ft at 6:30AM Jul 24, 2016Observed: 4.42 ft at 6:45AM Jul 24, 2016Observed: 4.42 ft at 7:00AM Jul 24, 2016Observed: 4.42 ft at 7:15AM Jul 24, 2016Observed: 4.42 ft at 7:30AM Jul 24, 2016Observed: 4.42 ft at 7:45AM Jul 24, 2016Observed: 4.42 ft at 8:00AM Jul 24, 2016Observed: 4.42 ft at 8:15AM Jul 24, 2016Observed: 4.42 ft at 8:30AM Jul 24, 2016Observed: 4.42 ft at 8:45AM Jul 24, 2016Observed: 4.42 ft at 9:00AM Jul 24, 2016Observed: 4.42 ft at 9:15AM Jul 24, 2016Observed: 4.41 ft at 9:30AM Jul 24, 2016Observed: 4.42 ft at 9:45AM Jul 24, 2016Observed: 4.42 ft at 9:46AM Jul 24, 2016Observed: 4.42 ft at 10:00AM Jul 24, 2016Observed: 4.41 ft at 10:15AM Jul 24, 2016Observed: 4.42 ft at 10:30AM Jul 24, 2016Observed: 4.41 ft at 10:45AM Jul 24, 2016Observed: 4.42 ft at 11:00AM Jul 24, 2016Observed: 4.41 ft at 11:15AM Jul 24, 2016Observed: 4.41 ft at 11:30AM Jul 24, 2016Observed: 4.41 ft at 11:45AM Jul 24, 2016Observed: 4.41 ft at 12:00PM Jul 24, 2016Observed: 4.42 ft at 12:15PM Jul 24, 2016Observed: 4.41 ft at 12:30PM Jul 24, 2016Observed: 4.41 ft at 12:45PM Jul 24, 2016Observed: 4.41 ft at 1:00PM Jul 24, 2016Observed: 4.41 ft at 1:15PM Jul 24, 2016Observed: 4.41 ft at 1:30PM Jul 24, 2016Observed: 4.41 ft at 1:45PM Jul 24, 2016Observed: 4.41 ft at 2:00PM Jul 24, 2016Observed: 4.41 ft at 2:15PM Jul 24, 2016Observed: 4.41 ft at 2:30PM Jul 24, 2016Observed: 4.42 ft at 2:45PM Jul 24, 2016Observed: 4.41 ft at 3:00PM Jul 24, 2016Observed: 4.41 ft at 3:15PM Jul 24, 2016Observed: 4.41 ft at 3:30PM Jul 24, 2016Observed: 4.41 ft at 3:45PM Jul 24, 2016Observed: 4.41 ft at 4:00PM Jul 24, 2016Observed: 4.42 ft at 4:15PM Jul 24, 2016Observed: 4.41 ft at 4:30PM Jul 24, 2016Observed: 4.41 ft at 4:45PM Jul 24, 2016Observed: 4.41 ft at 5:00PM Jul 24, 2016Observed: 4.41 ft at 5:15PM Jul 24, 2016Observed: 4.41 ft at 5:30PM Jul 24, 2016Observed: 4.41 ft at 5:45PM Jul 24, 2016Observed: 4.41 ft at 6:00PM Jul 24, 2016Observed: 4.41 ft at 6:15PM Jul 24, 2016Observed: 4.41 ft at 6:30PM Jul 24, 2016Observed: 4.41 ft at 6:45PM Jul 24, 2016Observed: 4.41 ft at 7:00PM Jul 24, 2016Observed: 4.41 ft at 7:15PM Jul 24, 2016Observed: 4.41 ft at 7:30PM Jul 24, 2016Observed: 4.4 ft at 7:45PM Jul 24, 2016Observed: 4.41 ft at 8:00PM Jul 24, 2016Observed: 4.41 ft at 8:15PM Jul 24, 2016Observed: 4.41 ft at 8:30PM Jul 24, 2016Observed: 4.41 ft at 8:45PM Jul 24, 2016Observed: 4.41 ft at 9:00PM Jul 24, 2016Observed: 4.4 ft at 9:15PM Jul 24, 2016Observed: 4.41 ft at 9:30PM Jul 24, 2016Observed: 4.41 ft at 9:45PM Jul 24, 2016Observed: 4.41 ft at 10:00PM Jul 24, 2016Observed: 4.41 ft at 10:15PM Jul 24, 2016Observed: 4.41 ft at 10:30PM Jul 24, 2016Observed: 4.41 ft at 10:45PM Jul 24, 2016Observed: 4.41 ft at 11:00PM Jul 24, 2016Observed: 4.4 ft at 11:15PM Jul 24, 2016Observed: 4.41 ft at 11:30PM Jul 24, 2016Observed: 4.41 ft at 11:45PM Jul 24, 2016Observed: 4.41 ft at 12:00AM Jul 25, 2016Observed: 4.41 ft at 12:15AM Jul 25, 2016Observed: 4.4 ft at 12:30AM Jul 25, 2016Observed: 4.41 ft at 12:45AM Jul 25, 2016Observed: 4.41 ft at 1:00AM Jul 25, 2016Observed: 4.4 ft at 1:15AM Jul 25, 2016Observed: 4.41 ft at 1:30AM Jul 25, 2016Observed: 4.41 ft at 1:45AM Jul 25, 2016Observed: 4.41 ft at 2:00AM Jul 25, 2016Observed: 4.41 ft at 2:15AM Jul 25, 2016Observed: 4.41 ft at 2:30AM Jul 25, 2016Observed: 4.41 ft at 2:45AM Jul 25, 2016Observed: 4.4 ft at 3:00AM Jul 25, 2016Observed: 4.41 ft at 3:15AM Jul 25, 2016Observed: 4.41 ft at 3:30AM Jul 25, 2016Observed: 4.4 ft at 3:45AM Jul 25, 2016Observed: 4.4 ft at 4:00AM Jul 25, 2016Observed: 4.4 ft at 4:01AM Jul 25, 2016Observed: 4.41 ft at 4:15AM Jul 25, 2016Observed: 4.4 ft at 4:30AM Jul 25, 2016Observed: 4.4 ft at 4:45AM Jul 25, 2016Observed: 4.41 ft at 5:00AM Jul 25, 2016Observed: 4.41 ft at 5:15AM Jul 25, 2016Observed: 4.41 ft at 5:30AM Jul 25, 2016Observed: 4.41 ft at 5:45AM Jul 25, 2016Observed: 4.41 ft at 6:00AM Jul 25, 2016Observed: 4.4 ft at 6:15AM Jul 25, 2016Observed: 4.4 ft at 6:30AM Jul 25, 2016Observed: 4.41 ft at 6:45AM Jul 25, 2016Observed: 4.4 ft at 7:00AM Jul 25, 2016Observed: 4.4 ft at 7:15AM Jul 25, 2016Observed: 4.4 ft at 7:30AM Jul 25, 2016Observed: 4.4 ft at 7:45AM Jul 25, 2016Observed: 4.4 ft at 8:00AM Jul 25, 2016Observed: 4.4 ft at 8:15AM Jul 25, 2016Observed: 4.43 ft at 8:30AM Jul 25, 2016Observed: 4.4 ft at 8:45AM Jul 25, 2016Observed: 4.4 ft at 9:00AM Jul 25, 2016Observed: 4.4 ft at 9:15AM Jul 25, 2016Observed: 4.41 ft at 9:30AM Jul 25, 2016Observed: 4.4 ft at 9:45AM Jul 25, 2016Observed: 4.4 ft at 10:00AM Jul 25, 2016Observed: 4.41 ft at 10:15AM Jul 25, 2016Observed: 4.43 ft at 10:30AM Jul 25, 2016Observed: 4.45 ft at 10:45AM Jul 25, 2016Observed: 4.48 ft at 11:00AM Jul 25, 2016Observed: 4.51 ft at 11:15AM Jul 25, 2016Observed: 4.55 ft at 11:30AM Jul 25, 2016Observed: 4.57 ft at 11:45AM Jul 25, 2016Highest Observation: 4.58 ft at 12:00PM Jul 25, 2016Highest Observation: 4.58 ft at 12:15PM Jul 25, 2016Observed: 4.57 ft at 12:30PM Jul 25, 2016Observed: 4.55 ft at 12:45PM Jul 25, 2016Observed: 4.54 ft at 1:00PM Jul 25, 2016Observed: 4.53 ft at 1:15PM Jul 25, 2016Observed: 4.51 ft at 1:30PM Jul 25, 2016Observed: 4.49 ft at 1:45PM Jul 25, 2016Observed: 4.47 ft at 2:00PM Jul 25, 2016Observed: 4.45 ft at 2:15PM Jul 25, 2016Observed: 4.44 ft at 2:30PM Jul 25, 2016Observed: 4.42 ft at 2:45PM Jul 25, 2016Observed: 4.41 ft at 3:00PM Jul 25, 2016Observed: 4.39 ft at 3:15PM Jul 25, 2016Observed: 4.38 ft at 3:30PM Jul 25, 2016Observed: 4.37 ft at 3:45PM Jul 25, 2016Observed: 4.36 ft at 4:00PM Jul 25, 2016Observed: 4.36 ft at 4:15PM Jul 25, 2016Observed: 4.35 ft at 4:30PM Jul 25, 2016Observed: 4.35 ft at 4:45PM Jul 25, 2016Observed: 4.35 ft at 5:00PM Jul 25, 2016Observed: 4.35 ft at 5:15PM Jul 25, 2016Observed: 4.34 ft at 5:30PM Jul 25, 2016Observed: 4.35 ft at 5:45PM Jul 25, 2016Observed: 4.35 ft at 6:00PM Jul 25, 2016Observed: 4.35 ft at 6:15PM Jul 25, 2016Observed: 4.35 ft at 6:30PM Jul 25, 2016Observed: 4.35 ft at 6:45PM Jul 25, 2016Observed: 4.35 ft at 7:00PM Jul 25, 2016Observed: 4.35 ft at 7:15PM Jul 25, 2016Observed: 4.36 ft at 7:30PM Jul 25, 2016Observed: 4.36 ft at 7:45PM Jul 25, 2016Observed: 4.35 ft at 8:00PM Jul 25, 2016Observed: 4.36 ft at 8:15PM Jul 25, 2016Observed: 4.36 ft at 8:30PM Jul 25, 2016Observed: 4.36 ft at 8:45PM Jul 25, 2016Observed: 4.36 ft at 9:00PM Jul 25, 2016Observed: 4.37 ft at 9:15PM Jul 25, 2016Observed: 4.36 ft at 9:30PM Jul 25, 2016Observed: 4.36 ft at 9:45PM Jul 25, 2016Observed: 4.37 ft at 10:00PM Jul 25, 2016Observed: 4.37 ft at 10:01PM Jul 25, 2016Observed: 4.37 ft at 10:15PM Jul 25, 2016Observed: 4.37 ft at 10:30PM Jul 25, 2016Observed: 4.37 ft at 10:45PM Jul 25, 2016Observed: 4.37 ft at 11:00PM Jul 25, 2016Observed: 4.37 ft at 11:15PM Jul 25, 2016Observed: 4.37 ft at 11:30PM Jul 25, 2016Observed: 4.37 ft at 11:45PM Jul 25, 2016Observed: 4.37 ft at 12:00AM Jul 26, 2016Observed: 4.38 ft at 12:15AM Jul 26, 2016Observed: 4.37 ft at 12:30AM Jul 26, 2016Observed: 4.37 ft at 12:45AM Jul 26, 2016Observed: 4.37 ft at 1:00AM Jul 26, 2016Observed: 4.37 ft at 1:15AM Jul 26, 2016Observed: 4.37 ft at 1:30AM Jul 26, 2016Observed: 4.37 ft at 1:45AM Jul 26, 2016Observed: 4.37 ft at 2:00AM Jul 26, 2016Observed: 4.37 ft at 2:15AM Jul 26, 2016Observed: 4.37 ft at 2:30AM Jul 26, 2016Observed: 4.37 ft at 2:45AM Jul 26, 2016Observed: 4.37 ft at 3:00AM Jul 26, 2016Observed: 4.37 ft at 3:15AM Jul 26, 2016Observed: 4.37 ft at 3:30AM Jul 26, 2016Observed: 4.37 ft at 3:45AM Jul 26, 2016Observed: 4.37 ft at 4:00AM Jul 26, 2016Observed: 4.37 ft at 4:01AM Jul 26, 2016Observed: 4.37 ft at 4:15AM Jul 26, 2016Observed: 4.37 ft at 4:30AM Jul 26, 2016Observed: 4.37 ft at 4:45AM Jul 26, 2016Observed: 4.37 ft at 5:00AM Jul 26, 2016Observed: 4.37 ft at 5:15AM Jul 26, 2016Observed: 4.37 ft at 5:30AM Jul 26, 2016Observed: 4.37 ft at 5:45AM Jul 26, 2016Observed: 4.37 ft at 6:00AM Jul 26, 2016Observed: 4.37 ft at 6:15AM Jul 26, 2016Observed: 4.37 ft at 6:30AM Jul 26, 2016Observed: 4.37 ft at 6:45AM Jul 26, 2016Observed: 4.37 ft at 7:00AM Jul 26, 2016Observed: 4.37 ft at 7:15AM Jul 26, 2016Observed: 4.36 ft at 7:30AM Jul 26, 2016Observed: 4.37 ft at 7:45AM Jul 26, 2016Observed: 4.37 ft at 8:00AM Jul 26, 2016Observed: 4.37 ft at 8:15AM Jul 26, 2016Observed: 4.36 ft at 8:30AM Jul 26, 2016Observed: 4.36 ft at 8:45AM Jul 26, 2016Observed: 4.37 ft at 9:00AM Jul 26, 2016Observed: 4.36 ft at 9:15AM Jul 26, 2016Observed: 4.36 ft at 9:30AM Jul 26, 2016Observed: 4.36 ft at 9:45AM Jul 26, 2016Observed: 4.36 ft at 10:00AM Jul 26, 2016Observed: 4.36 ft at 10:01AM Jul 26, 2016Observed: 4.36 ft at 10:15AM Jul 26, 2016Observed: 4.36 ft at 10:30AM Jul 26, 2016Observed: 4.36 ft at 10:45AM Jul 26, 2016Observed: 4.36 ft at 11:00AM Jul 26, 2016Observed: 4.36 ft at 11:15AM Jul 26, 2016Observed: 4.36 ft at 11:30AM Jul 26, 2016Observed: 4.36 ft at 11:45AM Jul 26, 2016Observed: 4.36 ft at 12:00PM Jul 26, 2016Observed: 4.36 ft at 12:15PM Jul 26, 2016Observed: 4.36 ft at 12:30PM Jul 26, 2016Observed: 4.36 ft at 12:45PM Jul 26, 2016Observed: 4.36 ft at 1:00PM Jul 26, 2016Observed: 4.36 ft at 1:15PM Jul 26, 2016Observed: 4.36 ft at 1:30PM Jul 26, 2016Observed: 4.36 ft at 1:45PM Jul 26, 2016Observed: 4.36 ft at 2:00PM Jul 26, 2016Observed: 4.35 ft at 2:15PM Jul 26, 2016Observed: 4.35 ft at 2:30PM Jul 26, 2016Observed: 4.36 ft at 2:45PM Jul 26, 2016Observed: 4.35 ft at 3:00PM Jul 26, 2016Observed: 4.35 ft at 3:15PM Jul 26, 2016Observed: 4.36 ft at 3:30PM Jul 26, 2016Observed: 4.35 ft at 3:45PM Jul 26, 2016Observed: 4.35 ft at 4:00PM Jul 26, 2016Observed: 4.35 ft at 4:01PM Jul 26, 2016Observed: 4.35 ft at 4:15PM Jul 26, 2016Observed: 4.35 ft at 4:30PM Jul 26, 2016Observed: 4.36 ft at 4:45PM Jul 26, 2016Observed: 4.35 ft at 5:00PM Jul 26, 2016Observed: 4.36 ft at 5:15PM Jul 26, 2016Observed: 4.35 ft at 5:30PM Jul 26, 2016Observed: 4.35 ft at 5:45PM Jul 26, 2016Observed: 4.35 ft at 6:00PM Jul 26, 2016Observed: 4.35 ft at 6:15PM Jul 26, 2016Observed: 4.35 ft at 6:30PM Jul 26, 2016Observed: 4.35 ft at 6:45PM Jul 26, 2016Observed: 4.35 ft at 7:00PM Jul 26, 2016Observed: 4.35 ft at 7:15PM Jul 26, 2016Observed: 4.35 ft at 7:30PM Jul 26, 2016Observed: 4.35 ft at 7:45PM Jul 26, 2016Observed: 4.35 ft at 8:00PM Jul 26, 2016Observed: 4.35 ft at 8:15PM Jul 26, 2016Observed: 4.35 ft at 8:30PM Jul 26, 2016Observed: 4.35 ft at 8:45PM Jul 26, 2016Observed: 4.35 ft at 9:00PM Jul 26, 2016Observed: 4.35 ft at 9:15PM Jul 26, 2016Observed: 4.35 ft at 9:30PM Jul 26, 2016Observed: 4.35 ft at 9:45PM Jul 26, 2016Observed: 4.35 ft at 10:00PM Jul 26, 2016Observed: 4.35 ft at 10:15PM Jul 26, 2016Observed: 4.34 ft at 10:30PM Jul 26, 2016Highest Forecast: 4.3 ft 2:00AM Jul 27, 2016Highest Forecast: 4.3 ft 8:00AM Jul 27, 2016Highest Forecast: 4.3 ft 2:00PM Jul 27, 2016Highest Forecast: 4.3 ft 8:00PM Jul 27, 2016Highest Forecast: 4.3 ft 2:00AM Jul 28, 2016Highest Forecast: 4.3 ft 8:00AM Jul 28, 2016Highest Forecast: 4.3 ft 2:00PM Jul 28, 2016Highest Forecast: 4.3 ft 8:00PM Jul 28, 2016Forecast: 4.2 ft 2:00AM Jul 29, 2016Forecast: 4.2 ft 8:00AM Jul 29, 2016USGS--Water Resources of the United StatesHENN3(plotting HGIRG) Graph Created (11:34PM Jul 26, 2016)ObservedForecast (issued 11:13AM Jul 26)Latest observed value: 4.34 ft at 10:30 PM EDT 26-Jul-2016. Flood Stage is 12 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.

NOTE: Forecasts for the Contoocook River at Henniker are issued routinely year-round.

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Upstream Gauge - at Peterborough Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 16
Flood Stage: 12
Action Stage: 10
Low Stage (in feet): 0

Historic Crests
(1) 21.30 ft on 09/21/1938
(2) 14.54 ft on 04/17/2007
(3) 13.75 ft on 10/16/2005
(4) 13.48 ft on 05/15/2006
(5) 13.32 ft on 04/03/2004
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.25 ft on 03/16/2010
(2) 14.54 ft on 04/17/2007
(3) 13.48 ft on 05/15/2006
(4) 13.75 ft on 10/16/2005
(5) 12.36 ft on 04/04/2005
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
12 MINOR LOWLAND FLOODING
About This Location Collapse

Latitude: 43.152024° N, Longitude: 71.857800° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 12 ft 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 475 ft 487 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:

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Hydrologic Resources Additional Resources
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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
National Weather Service
Gray Weather Forecast Office
P.O. Box 1208, 1 Weather Lane, Route 231
Gray, ME 04039
(207) 688-3216
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Page last modified: 13-Aug-2015 1:57 AM
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