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Hydrograph River at a Glance Download  
Merrimack River at Goffs Falls Observed crest: 6.8 ft at 3:00am Nov 22 Observed: 5.75 ft at 7:16pm Nov 20 Observed: 5.75 ft at 7:30pm Nov 20 Observed: 5.74 ft at 8:00pm Nov 20 Observed: 5.74 ft at 8:30pm Nov 20 Observed: 5.74 ft at 9:00pm Nov 20 Observed: 5.74 ft at 9:30pm Nov 20 Observed: 5.74 ft at 10:00pm Nov 20 Observed: 5.74 ft at 10:30pm Nov 20 Observed: 5.74 ft at 11:00pm Nov 20 Observed: 5.74 ft at 11:30pm Nov 20 Observed: 5.75 ft at 12:00am Nov 21 Observed: 5.75 ft at 12:30am Nov 21 Observed: 5.79 ft at 1:00am Nov 21 Observed: 5.84 ft at 1:30am Nov 21 Observed: 5.84 ft at 1:31am Nov 21 Observed: 5.93 ft at 2:00am Nov 21 Observed: 5.94 ft at 2:30am Nov 21 Observed: 5.96 ft at 3:00am Nov 21 Observed: 5.97 ft at 3:30am Nov 21 Observed: 6 ft at 4:00am Nov 21 Observed: 6 ft at 4:30am Nov 21 Observed: 6.14 ft at 5:00am Nov 21 Observed: 6.16 ft at 5:30am Nov 21 Observed: 6.21 ft at 6:00am Nov 21 Observed: 6.21 ft at 6:30am Nov 21 Observed: 6.21 ft at 7:00am Nov 21 Observed: 6.21 ft at 7:30am Nov 21 Observed: 6.21 ft at 7:31am Nov 21 Observed: 6.21 ft at 8:00am Nov 21 Observed: 6.22 ft at 8:30am Nov 21 Observed: 6.23 ft at 9:00am Nov 21 Observed: 6.24 ft at 9:30am Nov 21 Observed: 6.25 ft at 10:00am Nov 21 Observed: 6.26 ft at 10:30am Nov 21 Observed: 6.29 ft at 11:00am Nov 21 Observed: 6.3 ft at 11:30am Nov 21 Observed: 6.43 ft at 12:00pm Nov 21 Observed: 6.45 ft at 12:30pm Nov 21 Observed: 6.49 ft at 1:00pm Nov 21 Observed: 6.49 ft at 1:30pm Nov 21 Observed: 6.49 ft at 1:31pm Nov 21 Observed: 6.51 ft at 2:00pm Nov 21 Observed: 6.51 ft at 2:30pm Nov 21 Observed: 6.53 ft at 3:00pm Nov 21 Observed: 6.55 ft at 3:30pm Nov 21 Observed: 6.6 ft at 4:00pm Nov 21 Observed: 6.65 ft at 4:30pm Nov 21 Observed: 6.72 ft at 5:00pm Nov 21 Observed: 6.72 ft at 5:30pm Nov 21 Observed: 6.73 ft at 6:00pm Nov 21 Observed: 6.73 ft at 6:30pm Nov 21 Observed: 6.73 ft at 7:00pm Nov 21 Observed: 6.73 ft at 7:30pm Nov 21 Observed: 6.74 ft at 8:00pm Nov 21 Observed: 6.74 ft at 8:30pm Nov 21 Observed: 6.75 ft at 9:00pm Nov 21 Observed: 6.75 ft at 9:30pm Nov 21 Observed: 6.76 ft at 10:00pm Nov 21 Observed: 6.76 ft at 10:30pm Nov 21 Observed: 6.77 ft at 11:00pm Nov 21 Observed: 6.77 ft at 11:30pm Nov 21 Observed: 6.79 ft at 12:00am Nov 22 Observed: 6.79 ft at 12:30am Nov 22 Observed: 6.79 ft at 1:00am Nov 22 Observed: 6.79 ft at 1:30am Nov 22 Observed: 6.79 ft at 2:00am Nov 22 Observed: 6.79 ft at 2:30am Nov 22 Observed: 6.8 ft at 3:00am Nov 22 Observed: 6.79 ft at 3:30am Nov 22 Observed: 6.79 ft at 4:00am Nov 22 Observed: 6.79 ft at 4:30am Nov 22 Observed: 6.79 ft at 5:00am Nov 22 Observed: 6.79 ft at 5:30am Nov 22 Observed: 6.79 ft at 6:00am Nov 22 Observed: 6.79 ft at 6:30am Nov 22 Observed: 6.78 ft at 7:00am Nov 22 Observed: 6.77 ft at 7:30am Nov 22 Observed: 6.77 ft at 8:00am Nov 22 Observed: 6.76 ft at 8:30am Nov 22 Observed: 6.71 ft at 9:00am Nov 22 Observed: 6.69 ft at 9:30am Nov 22 Observed: 6.67 ft at 10:00am Nov 22 Observed: 6.66 ft at 10:30am Nov 22 Observed: 6.67 ft at 11:00am Nov 22 Observed: 6.67 ft at 11:30am Nov 22 Observed: 6.67 ft at 12:00pm Nov 22 Observed: 6.67 ft at 12:30pm Nov 22 Observed: 6.67 ft at 1:00pm Nov 22 Observed: 6.67 ft at 1:30pm Nov 22 Observed: 6.66 ft at 2:00pm Nov 22 Observed: 6.66 ft at 2:30pm Nov 22 Observed: 6.65 ft at 3:00pm Nov 22 Observed: 6.62 ft at 3:30pm Nov 22 Observed: 6.57 ft at 4:00pm Nov 22 Observed: 6.57 ft at 4:30pm Nov 22 Observed: 6.58 ft at 5:00pm Nov 22 Observed: 6.59 ft at 5:30pm Nov 22 Observed: 6.61 ft at 6:00pm Nov 22 Observed: 6.61 ft at 6:30pm Nov 22 Observed: 6.6 ft at 7:00pm Nov 22 Observed: 6.57 ft at 7:30pm Nov 22 Observed: 6.57 ft at 7:31pm Nov 22 Observed: 6.52 ft at 8:00pm Nov 22 Observed: 6.52 ft at 8:30pm Nov 22 Observed: 6.51 ft at 9:00pm Nov 22 Observed: 6.51 ft at 9:30pm Nov 22 Observed: 6.51 ft at 10:00pm Nov 22 Observed: 6.51 ft at 10:30pm Nov 22 Observed: 6.51 ft at 11:00pm Nov 22 Observed: 6.51 ft at 11:30pm Nov 22 Observed: 6.49 ft at 12:00am Nov 23 Observed: 6.49 ft at 12:30am Nov 23 Observed: 6.48 ft at 1:00am Nov 23 Observed: 6.48 ft at 1:30am Nov 23 Observed: 6.48 ft at 1:31am Nov 23 Observed: 6.4 ft at 2:00am Nov 23 Observed: 6.38 ft at 2:30am Nov 23 Observed: 6.37 ft at 3:00am Nov 23 Observed: 6.37 ft at 3:30am Nov 23 Observed: 6.38 ft at 4:00am Nov 23 Observed: 6.38 ft at 4:30am Nov 23 Observed: 6.38 ft at 5:00am Nov 23 Observed: 6.38 ft at 5:30am Nov 23 Observed: 6.38 ft at 6:00am Nov 23 Observed: 6.38 ft at 6:30am Nov 23 Observed: 6.37 ft at 7:00am Nov 23 Observed: 6.36 ft at 7:30am Nov 23 Observed: 6.31 ft at 8:00am Nov 23 Observed: 6.35 ft at 8:30am Nov 23 Observed: 6.38 ft at 9:00am Nov 23 Observed: 6.37 ft at 9:30am Nov 23 Observed: 6.27 ft at 10:30am Nov 23 Observed: 6.26 ft at 11:00am Nov 23 Observed: 6.26 ft at 11:30am Nov 23 Observed: 6.25 ft at 12:00pm Nov 23 Observed: 6.25 ft at 12:30pm Nov 23 Observed: 6.24 ft at 1:00pm Nov 23 Observed: 6.24 ft at 1:30pm Nov 23 Observed: 6.23 ft at 2:00pm Nov 23 Observed: 6.22 ft at 2:30pm Nov 23 Observed: 6.21 ft at 3:00pm Nov 23 Observed: 6.21 ft at 3:30pm Nov 23 Observed: 6.21 ft at 4:00pm Nov 23 Observed: 6.21 ft at 4:15pm Nov 23 Observed: 6.21 ft at 4:30pm Nov 23 Observed: 6.16 ft at 5:00pm Nov 23 Observed: 6.13 ft at 5:30pm Nov 23 Observed: 6.09 ft at 6:00pm Nov 23 Observed: 6.09 ft at 6:30pm Nov 23 Forecast: 6.3 ft at 1:00pm Nov 23 Forecast: 6.1 ft at 7:00pm Nov 23 Forecast: 6.1 ft at 1:00am Nov 24 Forecast: 6 ft at 7:00am Nov 24 Forecast: 5.9 ft at 1:00pm Nov 24 Forecast: 5.8 ft at 7:00pm Nov 24 Forecast: 5.7 ft at 1:00am Nov 25 Forecast: 5.6 ft at 7:00am Nov 25 Forecast: 5.6 ft at 1:00pm Nov 25 Graph Created (7:36pm Nov 23, 2009) Observed Forecast (issued 10:40am Nov 23) USGS--Water Resources of the United States GOFN3 (plotting HGIRG) Gage 0 Datum: 109.27 Latest observed value: 6.09 ft at 6:30 PM EST 23-Nov-2009. Flood Stage is 11.0 ft. Stage (ft) Flow (kcfs)
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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

Historical 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 Historical Crests

Low Water Records
(1) 1.0 ft on 10/11/1964

 Merrimack River at Goffs Falls location map

Flood Impacts Collapse
20.0 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.
17.0 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.
15.0 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.
11.0 FLOODING IS EXPECTED IN LOWEST LYING AREAS ALONG THE RIVER AFFECTING GOFFSTOWN...MANCHESTER...MERRIMACK AND LITCHFIELD.

About This Location Collapse
Latitude: 42.947700° N, Longitude: 71.463900° W, Horizontal Datum: NAD83

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 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 N/A N/A Older USGS topographic maps, NGVD29 benchmarks
MSL N/A N/A Older USGS topographic maps, MSL benchmarks
Other NULL NULL  

Other Data Sources:
U.S. Geological Survey (USGS) Data and Site Info for Goffs Falls

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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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