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Hydrograph River at a Glance Download
Merrimack River at Goffs Falls Stage (ft)Flow (kcfs)Observed: 5.3 ft at 10:30AM May 03, 2015Observed: 5.3 ft at 11:00AM May 03, 2015Observed: 5.3 ft at 11:30AM May 03, 2015Observed: 5.29 ft at 12:00PM May 03, 2015Observed: 5.28 ft at 12:30PM May 03, 2015Observed: 5.26 ft at 1:00PM May 03, 2015Observed: 5.26 ft at 1:30PM May 03, 2015Observed: 5.26 ft at 1:45PM May 03, 2015Observed: 5.26 ft at 2:00PM May 03, 2015Observed: 5.26 ft at 2:30PM May 03, 2015Observed: 5.26 ft at 3:00PM May 03, 2015Observed: 5.26 ft at 3:30PM May 03, 2015Observed: 5.25 ft at 4:00PM May 03, 2015Observed: 5.25 ft at 4:30PM May 03, 2015Observed: 5.25 ft at 5:00PM May 03, 2015Observed: 5.25 ft at 5:30PM May 03, 2015Observed: 5.25 ft at 6:00PM May 03, 2015Observed: 5.25 ft at 6:30PM May 03, 2015Observed: 5.25 ft at 7:00PM May 03, 2015Observed: 5.25 ft at 7:30PM May 03, 2015Observed: 5.25 ft at 7:45PM May 03, 2015Observed: 5.25 ft at 8:00PM May 03, 2015Observed: 5.25 ft at 8:30PM May 03, 2015Observed: 5.25 ft at 9:00PM May 03, 2015Observed: 5.25 ft at 9:30PM May 03, 2015Observed: 5.24 ft at 10:00PM May 03, 2015Observed: 5.24 ft at 10:30PM May 03, 2015Observed: 5.25 ft at 11:00PM May 03, 2015Observed: 5.25 ft at 11:30PM May 03, 2015Observed: 5.25 ft at 12:00AM May 04, 2015Observed: 5.25 ft at 12:30AM May 04, 2015Observed: 5.25 ft at 1:00AM May 04, 2015Observed: 5.25 ft at 1:30AM May 04, 2015Observed: 5.25 ft at 1:46AM May 04, 2015Observed: 5.25 ft at 2:00AM May 04, 2015Observed: 5.25 ft at 2:30AM May 04, 2015Observed: 5.25 ft at 3:00AM May 04, 2015Observed: 5.25 ft at 3:30AM May 04, 2015Observed: 5.25 ft at 4:00AM May 04, 2015Observed: 5.25 ft at 4:30AM May 04, 2015Observed: 5.26 ft at 5:00AM May 04, 2015Observed: 5.26 ft at 5:30AM May 04, 2015Observed: 5.26 ft at 6:00AM May 04, 2015Observed: 5.26 ft at 6:30AM May 04, 2015Observed: 5.26 ft at 7:00AM May 04, 2015Observed: 5.26 ft at 7:30AM May 04, 2015Observed: 5.26 ft at 7:46AM May 04, 2015Observed: 5.26 ft at 8:00AM May 04, 2015Observed: 5.26 ft at 8:30AM May 04, 2015Observed: 5.27 ft at 9:00AM May 04, 2015Observed: 5.27 ft at 9:30AM May 04, 2015Observed: 5.27 ft at 10:00AM May 04, 2015Observed: 5.27 ft at 10:30AM May 04, 2015Observed: 5.26 ft at 11:00AM May 04, 2015Observed: 5.26 ft at 11:30AM May 04, 2015Observed: 5.25 ft at 12:00PM May 04, 2015Observed: 5.24 ft at 12:30PM May 04, 2015Observed: 5.24 ft at 1:00PM May 04, 2015Observed: 5.23 ft at 1:30PM May 04, 2015Observed: 5.21 ft at 1:45PM May 04, 2015Observed: 5.18 ft at 2:00PM May 04, 2015Observed: 5.18 ft at 2:30PM May 04, 2015Observed: 5.18 ft at 3:00PM May 04, 2015Observed: 5.19 ft at 3:30PM May 04, 2015Observed: 5.23 ft at 4:00PM May 04, 2015Observed: 5.24 ft at 4:30PM May 04, 2015Observed: 5.26 ft at 5:00PM May 04, 2015Observed: 5.26 ft at 5:30PM May 04, 2015Observed: 5.26 ft at 6:00PM May 04, 2015Observed: 5.25 ft at 6:30PM May 04, 2015Observed: 5.22 ft at 7:00PM May 04, 2015Observed: 5.22 ft at 7:30PM May 04, 2015Observed: 5.22 ft at 7:45PM May 04, 2015Observed: 5.22 ft at 8:00PM May 04, 2015Observed: 5.22 ft at 8:30PM May 04, 2015Observed: 5.21 ft at 9:00PM May 04, 2015Observed: 5.22 ft at 9:30PM May 04, 2015Observed: 5.23 ft at 10:00PM May 04, 2015Observed: 5.23 ft at 10:30PM May 04, 2015Observed: 5.24 ft at 11:00PM May 04, 2015Observed: 5.25 ft at 11:30PM May 04, 2015Observed: 5.26 ft at 12:00AM May 05, 2015Observed: 5.27 ft at 12:30AM May 05, 2015Observed: 5.27 ft at 1:00AM May 05, 2015Observed: 5.27 ft at 1:30AM May 05, 2015Observed: 5.27 ft at 1:45AM May 05, 2015Observed: 5.27 ft at 2:00AM May 05, 2015Observed: 5.27 ft at 2:30AM May 05, 2015Observed: 5.25 ft at 3:00AM May 05, 2015Observed: 5.25 ft at 3:30AM May 05, 2015Observed: 5.24 ft at 4:00AM May 05, 2015Observed: 5.24 ft at 4:30AM May 05, 2015Observed: 5.24 ft at 5:00AM May 05, 2015Observed: 5.24 ft at 5:30AM May 05, 2015Observed: 5.24 ft at 6:00AM May 05, 2015Observed: 5.24 ft at 6:30AM May 05, 2015Observed: 5.25 ft at 7:00AM May 05, 2015Observed: 5.26 ft at 7:30AM May 05, 2015Observed: 5.26 ft at 7:46AM May 05, 2015Observed: 5.27 ft at 8:00AM May 05, 2015Observed: 5.28 ft at 8:30AM May 05, 2015Observed: 5.29 ft at 9:00AM May 05, 2015Observed: 5.29 ft at 9:30AM May 05, 2015Observed: 5.29 ft at 10:00AM May 05, 2015Observed: 5.29 ft at 10:30AM May 05, 2015Observed: 5.28 ft at 11:00AM May 05, 2015Observed: 5.26 ft at 11:30AM May 05, 2015Observed: 5.23 ft at 12:00PM May 05, 2015Observed: 5.23 ft at 12:30PM May 05, 2015Observed: 5.24 ft at 1:00PM May 05, 2015Observed: 5.24 ft at 1:30PM May 05, 2015Observed: 5.25 ft at 1:46PM May 05, 2015Observed: 5.26 ft at 2:00PM May 05, 2015Observed: 5.26 ft at 2:30PM May 05, 2015Observed: 5.27 ft at 3:00PM May 05, 2015Observed: 5.27 ft at 3:30PM May 05, 2015Observed: 5.27 ft at 4:00PM May 05, 2015Observed: 5.27 ft at 4:30PM May 05, 2015Observed: 5.28 ft at 5:00PM May 05, 2015Observed: 5.28 ft at 5:30PM May 05, 2015Observed: 5.29 ft at 6:00PM May 05, 2015Observed: 5.29 ft at 6:30PM May 05, 2015Observed: 5.29 ft at 7:00PM May 05, 2015Observed: 5.29 ft at 7:30PM May 05, 2015Observed: 5.29 ft at 8:00PM May 05, 2015Observed: 5.29 ft at 8:01PM May 05, 2015Observed: 5.29 ft at 8:30PM May 05, 2015Observed: 5.29 ft at 9:00PM May 05, 2015Observed: 5.29 ft at 9:30PM May 05, 2015Observed: 5.29 ft at 10:00PM May 05, 2015Observed: 5.29 ft at 10:30PM May 05, 2015Observed: 5.29 ft at 11:00PM May 05, 2015Observed: 5.29 ft at 11:30PM May 05, 2015Observed: 5.33 ft at 12:00AM May 06, 2015Observed: 5.34 ft at 12:30AM May 06, 2015Observed: 5.36 ft at 1:00AM May 06, 2015Observed: 5.36 ft at 1:30AM May 06, 2015Observed: 5.37 ft at 2:00AM May 06, 2015Observed: 5.37 ft at 2:30AM May 06, 2015Observed: 5.38 ft at 3:00AM May 06, 2015Observed: 5.38 ft at 3:30AM May 06, 2015Observed: 5.38 ft at 4:00AM May 06, 2015Observed: 5.38 ft at 4:30AM May 06, 2015Observed: 5.39 ft at 5:00AM May 06, 2015Observed: 5.39 ft at 5:30AM May 06, 2015Observed: 5.4 ft at 6:00AM May 06, 2015Observed: 5.4 ft at 6:30AM May 06, 2015Observed: 5.41 ft at 7:00AM May 06, 2015Observed: 5.41 ft at 7:30AM May 06, 2015Observed: 5.41 ft at 8:00AM May 06, 2015Observed: 5.41 ft at 8:30AM May 06, 2015Observed: 5.44 ft at 9:00AM May 06, 2015Highest Observation: 5.46 ft at 9:30AM May 06, 2015Forecast: 5.4 ft 2:00PM May 06, 2015Highest Forecast: 5.5 ft 8:00PM May 06, 2015Highest Forecast: 5.5 ft 2:00AM May 07, 2015Highest Forecast: 5.5 ft 8:00AM May 07, 2015Forecast: 5.4 ft 2:00PM May 07, 2015USGS--Water Resources of the United StatesGOFN3(plotting HGIRG) Graph Created (10:18AM May 6, 2015)ObservedForecast (issued 11:37AM May 5)Latest observed value: 5.46 ft at 9:30 AM EDT 6-May-2015. Flood Stage is 11 ft
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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 9:34 PM
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