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Hydrograph River at a Glance Download
Merrimack River at Goffs Falls Stage (ft)Flow (kcfs)Observed: 4.22 ft at 10:30AM Nov 23, 2014Observed: 4.23 ft at 11:00AM Nov 23, 2014Observed: 4.23 ft at 11:30AM Nov 23, 2014Observed: 4.19 ft at 12:00PM Nov 23, 2014Observed: 4.17 ft at 12:30PM Nov 23, 2014Observed: 4.1 ft at 1:00PM Nov 23, 2014Observed: 4.08 ft at 1:30PM Nov 23, 2014Observed: 4.05 ft at 2:00PM Nov 23, 2014Observed: 4.04 ft at 2:30PM Nov 23, 2014Observed: 4.04 ft at 3:00PM Nov 23, 2014Observed: 4.04 ft at 3:30PM Nov 23, 2014Observed: 4.11 ft at 4:00PM Nov 23, 2014Observed: 4.14 ft at 4:30PM Nov 23, 2014Observed: 4.24 ft at 5:00PM Nov 23, 2014Observed: 4.27 ft at 5:30PM Nov 23, 2014Observed: 4.32 ft at 6:00PM Nov 23, 2014Observed: 4.33 ft at 6:30PM Nov 23, 2014Observed: 4.32 ft at 7:00PM Nov 23, 2014Observed: 4.3 ft at 7:30PM Nov 23, 2014Observed: 4.24 ft at 8:00PM Nov 23, 2014Observed: 4.22 ft at 8:30PM Nov 23, 2014Observed: 4.21 ft at 8:46PM Nov 23, 2014Observed: 4.2 ft at 9:00PM Nov 23, 2014Observed: 4.19 ft at 9:30PM Nov 23, 2014Observed: 4.2 ft at 10:00PM Nov 23, 2014Observed: 4.2 ft at 10:30PM Nov 23, 2014Observed: 4.25 ft at 11:00PM Nov 23, 2014Observed: 4.27 ft at 11:30PM Nov 23, 2014Observed: 4.3 ft at 12:00AM Nov 24, 2014Observed: 4.3 ft at 12:30AM Nov 24, 2014Observed: 4.29 ft at 1:00AM Nov 24, 2014Observed: 4.27 ft at 1:30AM Nov 24, 2014Observed: 4.22 ft at 2:00AM Nov 24, 2014Observed: 4.2 ft at 2:30AM Nov 24, 2014Observed: 4.2 ft at 2:45AM Nov 24, 2014Observed: 4.18 ft at 3:00AM Nov 24, 2014Observed: 4.18 ft at 3:30AM Nov 24, 2014Observed: 4.16 ft at 4:00AM Nov 24, 2014Observed: 4.16 ft at 4:30AM Nov 24, 2014Observed: 4.16 ft at 5:00AM Nov 24, 2014Observed: 4.17 ft at 5:30AM Nov 24, 2014Observed: 4.18 ft at 6:00AM Nov 24, 2014Observed: 4.19 ft at 6:30AM Nov 24, 2014Observed: 4.23 ft at 7:00AM Nov 24, 2014Observed: 4.25 ft at 7:30AM Nov 24, 2014Observed: 4.28 ft at 8:00AM Nov 24, 2014Observed: 4.29 ft at 8:30AM Nov 24, 2014Observed: 4.31 ft at 8:45AM Nov 24, 2014Observed: 4.34 ft at 9:00AM Nov 24, 2014Observed: 4.36 ft at 9:30AM Nov 24, 2014Observed: 4.39 ft at 10:00AM Nov 24, 2014Observed: 4.4 ft at 10:30AM Nov 24, 2014Observed: 4.39 ft at 11:00AM Nov 24, 2014Observed: 4.38 ft at 11:30AM Nov 24, 2014Observed: 4.37 ft at 12:00PM Nov 24, 2014Observed: 4.37 ft at 12:30PM Nov 24, 2014Observed: 4.39 ft at 1:00PM Nov 24, 2014Observed: 4.39 ft at 1:30PM Nov 24, 2014Observed: 4.4 ft at 2:00PM Nov 24, 2014Observed: 4.41 ft at 2:30PM Nov 24, 2014Observed: 4.42 ft at 2:46PM Nov 24, 2014Observed: 4.42 ft at 3:00PM Nov 24, 2014Observed: 4.41 ft at 3:30PM Nov 24, 2014Observed: 4.37 ft at 4:00PM Nov 24, 2014Observed: 4.36 ft at 4:30PM Nov 24, 2014Observed: 4.39 ft at 5:00PM Nov 24, 2014Observed: 4.41 ft at 5:30PM Nov 24, 2014Observed: 4.45 ft at 6:00PM Nov 24, 2014Observed: 4.46 ft at 6:30PM Nov 24, 2014Observed: 4.48 ft at 7:00PM Nov 24, 2014Observed: 4.48 ft at 7:30PM Nov 24, 2014Observed: 4.47 ft at 8:00PM Nov 24, 2014Observed: 4.46 ft at 8:30PM Nov 24, 2014Observed: 4.46 ft at 8:46PM Nov 24, 2014Observed: 4.45 ft at 9:00PM Nov 24, 2014Observed: 4.44 ft at 9:30PM Nov 24, 2014Observed: 4.42 ft at 10:00PM Nov 24, 2014Observed: 4.42 ft at 10:30PM Nov 24, 2014Observed: 4.46 ft at 11:00PM Nov 24, 2014Observed: 4.47 ft at 11:30PM Nov 24, 2014Observed: 4.54 ft at 12:00AM Nov 25, 2014Observed: 4.56 ft at 12:30AM Nov 25, 2014Observed: 4.6 ft at 1:00AM Nov 25, 2014Observed: 4.61 ft at 1:30AM Nov 25, 2014Observed: 4.64 ft at 2:00AM Nov 25, 2014Observed: 4.65 ft at 2:30AM Nov 25, 2014Observed: 4.66 ft at 2:46AM Nov 25, 2014Observed: 4.68 ft at 3:00AM Nov 25, 2014Observed: 4.7 ft at 3:30AM Nov 25, 2014Observed: 4.75 ft at 4:00AM Nov 25, 2014Observed: 4.77 ft at 4:30AM Nov 25, 2014Observed: 4.79 ft at 5:00AM Nov 25, 2014Observed: 4.79 ft at 5:30AM Nov 25, 2014Observed: 4.79 ft at 6:00AM Nov 25, 2014Observed: 4.79 ft at 6:30AM Nov 25, 2014Observed: 4.82 ft at 7:00AM Nov 25, 2014Observed: 4.84 ft at 7:30AM Nov 25, 2014Observed: 4.85 ft at 8:00AM Nov 25, 2014Observed: 4.89 ft at 8:30AM Nov 25, 2014Observed: 4.92 ft at 8:45AM Nov 25, 2014Observed: 4.99 ft at 9:00AM Nov 25, 2014Observed: 5.01 ft at 9:30AM Nov 25, 2014Observed: 5.02 ft at 10:00AM Nov 25, 2014Observed: 5 ft at 10:30AM Nov 25, 2014Observed: 4.94 ft at 11:00AM Nov 25, 2014Observed: 4.93 ft at 11:30AM Nov 25, 2014Observed: 4.92 ft at 12:00PM Nov 25, 2014Observed: 4.94 ft at 12:30PM Nov 25, 2014Observed: 5.22 ft at 1:00PM Nov 25, 2014Observed: 5.29 ft at 1:30PM Nov 25, 2014Observed: 5.29 ft at 2:00PM Nov 25, 2014Observed: 5.2 ft at 2:30PM Nov 25, 2014Observed: 5.11 ft at 2:45PM Nov 25, 2014Observed: 4.99 ft at 3:00PM Nov 25, 2014Observed: 4.97 ft at 3:30PM Nov 25, 2014Observed: 5.04 ft at 4:00PM Nov 25, 2014Observed: 5.08 ft at 4:30PM Nov 25, 2014Observed: 5.21 ft at 5:00PM Nov 25, 2014Observed: 5.26 ft at 5:30PM Nov 25, 2014Observed: 5.36 ft at 6:00PM Nov 25, 2014Observed: 5.37 ft at 6:30PM Nov 25, 2014Observed: 5.39 ft at 7:00PM Nov 25, 2014Observed: 5.39 ft at 7:30PM Nov 25, 2014Observed: 5.39 ft at 8:00PM Nov 25, 2014Observed: 5.39 ft at 8:30PM Nov 25, 2014Observed: 5.39 ft at 8:46PM Nov 25, 2014Observed: 5.39 ft at 9:00PM Nov 25, 2014Observed: 5.4 ft at 9:30PM Nov 25, 2014Observed: 5.4 ft at 10:00PM Nov 25, 2014Observed: 5.4 ft at 10:30PM Nov 25, 2014Observed: 5.4 ft at 11:00PM Nov 25, 2014Observed: 5.4 ft at 11:30PM Nov 25, 2014Observed: 5.41 ft at 12:00AM Nov 26, 2014Observed: 5.42 ft at 12:30AM Nov 26, 2014Observed: 5.45 ft at 1:00AM Nov 26, 2014Observed: 5.49 ft at 1:30AM Nov 26, 2014Observed: 5.63 ft at 2:00AM Nov 26, 2014Observed: 5.65 ft at 2:30AM Nov 26, 2014Highest Observation: 5.66 ft at 2:45AM Nov 26, 2014Highest Observation: 5.66 ft at 3:00AM Nov 26, 2014Observed: 5.65 ft at 3:30AM Nov 26, 2014Observed: 5.63 ft at 4:00AM Nov 26, 2014Observed: 5.61 ft at 4:30AM Nov 26, 2014Observed: 5.51 ft at 5:00AM Nov 26, 2014Observed: 5.49 ft at 5:30AM Nov 26, 2014Observed: 5.47 ft at 6:00AM Nov 26, 2014Observed: 5.47 ft at 6:30AM Nov 26, 2014Observed: 5.47 ft at 7:00AM Nov 26, 2014Observed: 5.48 ft at 7:30AM Nov 26, 2014Observed: 5.48 ft at 8:00AM Nov 26, 2014Observed: 5.48 ft at 8:30AM Nov 26, 2014Observed: 5.49 ft at 9:00AM Nov 26, 2014Observed: 5.49 ft at 9:30AM Nov 26, 2014Highest Forecast: 5.8 ft 1:00PM Nov 26, 2014Highest Forecast: 5.8 ft 7:00PM Nov 26, 2014Highest Forecast: 5.8 ft 1:00AM Nov 27, 2014Highest Forecast: 5.8 ft 7:00AM Nov 27, 2014Highest Forecast: 5.8 ft 1:00PM Nov 27, 2014Forecast: 5.7 ft 7:00PM Nov 27, 2014Forecast: 5.7 ft 1:00AM Nov 28, 2014Forecast: 5.6 ft 7:00AM Nov 28, 2014USGS--Water Resources of the United StatesGOFN3(plotting HGIRG) Graph Created (10:00AM Nov 26, 2014)ObservedForecast (issued 11:19AM Nov 25)Latest observed value: 5.49 ft at 9:30 AM EST 26-Nov-2014. Flood Stage is 11 ft
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Tabular Data (UTC)
Tabular Data (EST)
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Datum: Not Available
Metadata
NOTE: Forecasts for the Merrimack River at Goffs Falls are issued routinely year-round.
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Upstream Gauge - at Franklin Jct. Upstream Gauge Downstream Gauge Downstream Gauge - at Nashua
Flood Categories (in feet)
Major Flood Stage: 17
Moderate Flood Stage: 15
Flood Stage: 11
Action Stage: 10
Low Stage (in feet): 0

Historic Crests
(1) 35.19 ft on 03/20/1936
(2) 25.87 ft on 09/23/1938
(3) 19.87 ft on 05/15/2006
(4) 17.42 ft on 04/06/1960
(5) 16.79 ft on 04/17/2007
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.60 ft on 04/01/2010
(2) 10.83 ft on 04/14/2008
(3) 16.79 ft on 04/17/2007
(4) 19.87 ft on 05/15/2006
(5) 13.20 ft on 10/16/2005
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
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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
20 This is a significant and serious flood. If you are in a flood prone location near the river, act quickly and head for higher ground. If you are asked to evacuate, do so immediately. Flooding affects portions of Manchester, Bedford, Merrimack and Litchfield. Areas significantly impacted include Riverdale Avenue and Stark Way in Manchester.
17 This is a serious flood event. If you are in a flood prone area near the river, be prepared to move to higher ground and evacuate if asked to do so. Areas impacted include Stark Way and Riverdale Avenue in Manchester.
15 Flooding is expected in low lying areas of Goffstown, Manchester, Merrimack and Litchfield. Should evacuations become necessary, act quickly and follow the directions of local emergency management officals. Flooding may force the closure of some roadways which run along the river. Know alternate routes so you can avoid these locations.
11 Flooding is expected in lowest lying areas along the river affecting Goffstown, Manchester, Merrimack and Litchfield.
About This Location Collapse

Latitude: 42.948056° N, Longitude: 71.463889° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other NULL NULL  

Current/Historical Observations:

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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: 20-Nov-2014 2:01 AM
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