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Hydrograph River at a Glance Download
Merrimack River at Goffs Falls Stage (ft)Flow (kcfs)Highest Observation: 4.15 ft at 4:30PM Jul 29, 2015Observed: 4.06 ft at 5:00PM Jul 29, 2015Observed: 4.01 ft at 5:30PM Jul 29, 2015Observed: 3.88 ft at 6:00PM Jul 29, 2015Observed: 3.86 ft at 6:30PM Jul 29, 2015Observed: 3.82 ft at 7:00PM Jul 29, 2015Observed: 3.83 ft at 7:30PM Jul 29, 2015Observed: 3.86 ft at 8:00PM Jul 29, 2015Observed: 3.87 ft at 8:30PM Jul 29, 2015Observed: 3.87 ft at 9:00PM Jul 29, 2015Observed: 3.86 ft at 9:30PM Jul 29, 2015Observed: 3.81 ft at 10:00PM Jul 29, 2015Observed: 3.8 ft at 10:30PM Jul 29, 2015Observed: 3.78 ft at 11:00PM Jul 29, 2015Observed: 3.79 ft at 11:30PM Jul 29, 2015Observed: 3.82 ft at 12:00AM Jul 30, 2015Observed: 3.83 ft at 12:30AM Jul 30, 2015Observed: 3.86 ft at 1:00AM Jul 30, 2015Observed: 3.86 ft at 1:30AM Jul 30, 2015Observed: 3.88 ft at 2:00AM Jul 30, 2015Observed: 3.88 ft at 2:30AM Jul 30, 2015Observed: 3.89 ft at 2:45AM Jul 30, 2015Observed: 3.89 ft at 3:00AM Jul 30, 2015Observed: 3.89 ft at 3:30AM Jul 30, 2015Observed: 3.89 ft at 4:00AM Jul 30, 2015Observed: 3.89 ft at 4:30AM Jul 30, 2015Observed: 3.8 ft at 6:00AM Jul 30, 2015Observed: 3.79 ft at 6:30AM Jul 30, 2015Observed: 3.8 ft at 7:00AM Jul 30, 2015Observed: 3.81 ft at 7:30AM Jul 30, 2015Observed: 3.87 ft at 8:00AM Jul 30, 2015Observed: 3.89 ft at 8:30AM Jul 30, 2015Observed: 3.93 ft at 9:00AM Jul 30, 2015Observed: 3.93 ft at 9:30AM Jul 30, 2015Observed: 3.9 ft at 10:00AM Jul 30, 2015Observed: 3.9 ft at 10:30AM Jul 30, 2015Observed: 3.88 ft at 11:00AM Jul 30, 2015Observed: 3.88 ft at 11:30AM Jul 30, 2015Observed: 3.86 ft at 12:00PM Jul 30, 2015Observed: 3.85 ft at 12:30PM Jul 30, 2015Observed: 3.84 ft at 1:00PM Jul 30, 2015Observed: 3.83 ft at 1:30PM Jul 30, 2015Observed: 3.82 ft at 2:00PM Jul 30, 2015Observed: 3.81 ft at 2:30PM Jul 30, 2015Observed: 3.8 ft at 2:46PM Jul 30, 2015Observed: 3.76 ft at 3:00PM Jul 30, 2015Observed: 3.71 ft at 3:30PM Jul 30, 2015Observed: 3.62 ft at 4:00PM Jul 30, 2015Observed: 3.61 ft at 4:30PM Jul 30, 2015Observed: 3.68 ft at 5:00PM Jul 30, 2015Observed: 3.71 ft at 5:30PM Jul 30, 2015Observed: 3.81 ft at 6:00PM Jul 30, 2015Observed: 3.83 ft at 6:30PM Jul 30, 2015Observed: 3.87 ft at 7:00PM Jul 30, 2015Observed: 3.87 ft at 7:30PM Jul 30, 2015Observed: 3.86 ft at 8:00PM Jul 30, 2015Observed: 3.85 ft at 8:30PM Jul 30, 2015Observed: 3.84 ft at 8:45PM Jul 30, 2015Observed: 3.82 ft at 9:00PM Jul 30, 2015Observed: 3.81 ft at 9:30PM Jul 30, 2015Observed: 3.79 ft at 10:00PM Jul 30, 2015Observed: 3.78 ft at 10:30PM Jul 30, 2015Observed: 3.73 ft at 11:00PM Jul 30, 2015Observed: 3.72 ft at 11:30PM Jul 30, 2015Observed: 3.7 ft at 12:00AM Jul 31, 2015Observed: 3.69 ft at 12:30AM Jul 31, 2015Observed: 3.68 ft at 1:00AM Jul 31, 2015Observed: 3.68 ft at 1:30AM Jul 31, 2015Observed: 3.68 ft at 2:00AM Jul 31, 2015Observed: 3.68 ft at 2:30AM Jul 31, 2015Observed: 3.68 ft at 2:45AM Jul 31, 2015Observed: 3.7 ft at 3:00AM Jul 31, 2015Observed: 3.71 ft at 3:30AM Jul 31, 2015Observed: 3.73 ft at 4:00AM Jul 31, 2015Observed: 3.73 ft at 4:30AM Jul 31, 2015Observed: 3.74 ft at 5:00AM Jul 31, 2015Observed: 3.74 ft at 5:30AM Jul 31, 2015Observed: 3.7 ft at 6:00AM Jul 31, 2015Observed: 3.69 ft at 6:30AM Jul 31, 2015Observed: 3.65 ft at 7:00AM Jul 31, 2015Observed: 3.64 ft at 7:30AM Jul 31, 2015Observed: 3.63 ft at 8:00AM Jul 31, 2015Observed: 3.62 ft at 8:30AM Jul 31, 2015Observed: 3.62 ft at 9:00AM Jul 31, 2015Observed: 3.62 ft at 9:30AM Jul 31, 2015Observed: 3.62 ft at 10:00AM Jul 31, 2015Observed: 3.62 ft at 10:30AM Jul 31, 2015Observed: 3.59 ft at 11:00AM Jul 31, 2015Observed: 3.54 ft at 11:30AM Jul 31, 2015Observed: 3.32 ft at 12:00PM Jul 31, 2015Observed: 3.24 ft at 12:30PM Jul 31, 2015Observed: 3.07 ft at 1:00PM Jul 31, 2015Observed: 3.02 ft at 1:30PM Jul 31, 2015Observed: 2.92 ft at 2:00PM Jul 31, 2015Observed: 2.9 ft at 2:30PM Jul 31, 2015Observed: 2.81 ft at 3:00PM Jul 31, 2015Observed: 2.78 ft at 3:30PM Jul 31, 2015Observed: 2.77 ft at 4:00PM Jul 31, 2015Observed: 2.82 ft at 4:30PM Jul 31, 2015Observed: 3.05 ft at 5:00PM Jul 31, 2015Observed: 3.13 ft at 5:30PM Jul 31, 2015Observed: 3.37 ft at 6:00PM Jul 31, 2015Observed: 3.43 ft at 6:30PM Jul 31, 2015Observed: 3.55 ft at 7:00PM Jul 31, 2015Observed: 3.56 ft at 7:30PM Jul 31, 2015Observed: 3.49 ft at 8:00PM Jul 31, 2015Observed: 3.46 ft at 8:30PM Jul 31, 2015Observed: 3.37 ft at 9:00PM Jul 31, 2015Observed: 3.4 ft at 9:01PM Jul 31, 2015Observed: 3.35 ft at 9:30PM Jul 31, 2015Observed: 3.32 ft at 10:00PM Jul 31, 2015Observed: 3.33 ft at 10:30PM Jul 31, 2015Observed: 3.38 ft at 11:00PM Jul 31, 2015Observed: 3.4 ft at 11:30PM Jul 31, 2015Observed: 3.45 ft at 12:00AM Aug 01, 2015Observed: 3.46 ft at 12:30AM Aug 01, 2015Observed: 3.48 ft at 1:00AM Aug 01, 2015Observed: 3.48 ft at 1:30AM Aug 01, 2015Observed: 3.49 ft at 2:00AM Aug 01, 2015Observed: 3.5 ft at 2:30AM Aug 01, 2015Observed: 3.5 ft at 3:00AM Aug 01, 2015Observed: 3.5 ft at 3:30AM Aug 01, 2015Observed: 3.5 ft at 4:00AM Aug 01, 2015Observed: 3.5 ft at 4:30AM Aug 01, 2015Observed: 3.5 ft at 5:00AM Aug 01, 2015Observed: 3.5 ft at 5:30AM Aug 01, 2015Observed: 3.5 ft at 6:00AM Aug 01, 2015Observed: 3.5 ft at 6:30AM Aug 01, 2015Observed: 3.5 ft at 7:00AM Aug 01, 2015Observed: 3.5 ft at 7:30AM Aug 01, 2015Observed: 3.5 ft at 8:00AM Aug 01, 2015Observed: 3.5 ft at 8:30AM Aug 01, 2015Observed: 3.51 ft at 9:00AM Aug 01, 2015Observed: 3.51 ft at 9:01AM Aug 01, 2015Observed: 3.51 ft at 9:30AM Aug 01, 2015Observed: 3.51 ft at 10:00AM Aug 01, 2015Observed: 3.52 ft at 10:30AM Aug 01, 2015Observed: 3.52 ft at 11:00AM Aug 01, 2015Observed: 3.52 ft at 11:30AM Aug 01, 2015Observed: 3.52 ft at 12:00PM Aug 01, 2015Observed: 3.51 ft at 12:30PM Aug 01, 2015Observed: 3.51 ft at 1:00PM Aug 01, 2015Observed: 3.51 ft at 1:30PM Aug 01, 2015Observed: 3.51 ft at 2:00PM Aug 01, 2015Observed: 3.51 ft at 2:30PM Aug 01, 2015Observed: 3.52 ft at 3:00PM Aug 01, 2015Observed: 3.52 ft at 3:30PM Aug 01, 2015Highest Forecast: 3.5 ft 8:00PM Aug 01, 2015Forecast: 3.4 ft 2:00AM Aug 02, 2015Forecast: 3.4 ft 8:00AM Aug 02, 2015Forecast: 3.4 ft 2:00PM Aug 02, 2015Forecast: 3.4 ft 8:00PM Aug 02, 2015Forecast: 3.3 ft 2:00AM Aug 03, 2015Forecast: 3.3 ft 8:00AM Aug 03, 2015Forecast: 3.3 ft 2:00PM Aug 03, 2015Forecast: 3.2 ft 8:00PM Aug 03, 2015Forecast: 3.2 ft 2:00AM Aug 04, 2015Forecast: 3.2 ft 8:00AM Aug 04, 2015USGS--Water Resources of the United StatesGOFN3(plotting HGIRG) Graph Created (4:18PM Aug 1, 2015)ObservedForecast (issued 11:11AM Aug 1)Latest observed value: 3.52 ft at 3:30 PM EDT 1-Aug-2015. Flood Stage is 11 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Effective December 3, 2014, this forecast point will transfer from WFO Taunton to WFO Gray, ME. Click here for more information on this change.

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
(1) 0.98 ft on 10/11/1964

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 AVE 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 AVE 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.
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Page last modified: 12-Feb-2015 9:36 PM
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