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Hydrograph River at a Glance Download
Merrimack River at Goffs Falls Stage (ft)Flow (kcfs)Observed: 9.22 ft at 9:30AM Apr 13, 2014Observed: 9.22 ft at 10:00AM Apr 13, 2014Observed: 9.22 ft at 10:30AM Apr 13, 2014Observed: 9.22 ft at 11:00AM Apr 13, 2014Observed: 9.22 ft at 11:30AM Apr 13, 2014Observed: 9.22 ft at 12:00PM Apr 13, 2014Observed: 9.22 ft at 12:30PM Apr 13, 2014Observed: 9.22 ft at 1:00PM Apr 13, 2014Observed: 9.22 ft at 1:30PM Apr 13, 2014Observed: 9.21 ft at 2:00PM Apr 13, 2014Observed: 9.21 ft at 2:30PM Apr 13, 2014Observed: 9.21 ft at 3:00PM Apr 13, 2014Observed: 9.21 ft at 3:30PM Apr 13, 2014Observed: 9.21 ft at 4:00PM Apr 13, 2014Observed: 9.21 ft at 4:30PM Apr 13, 2014Observed: 9.2 ft at 5:00PM Apr 13, 2014Observed: 9.2 ft at 5:30PM Apr 13, 2014Observed: 9.2 ft at 6:00PM Apr 13, 2014Observed: 9.2 ft at 6:30PM Apr 13, 2014Observed: 9.2 ft at 7:00PM Apr 13, 2014Observed: 9.2 ft at 7:30PM Apr 13, 2014Observed: 9.2 ft at 8:00PM Apr 13, 2014Observed: 9.19 ft at 8:30PM Apr 13, 2014Observed: 9.19 ft at 9:00PM Apr 13, 2014Observed: 9.19 ft at 9:30PM Apr 13, 2014Observed: 9.19 ft at 10:00PM Apr 13, 2014Observed: 9.19 ft at 10:30PM Apr 13, 2014Observed: 9.19 ft at 11:00PM Apr 13, 2014Observed: 9.19 ft at 11:30PM Apr 13, 2014Observed: 9.19 ft at 12:00AM Apr 14, 2014Observed: 9.19 ft at 12:30AM Apr 14, 2014Observed: 9.19 ft at 1:00AM Apr 14, 2014Observed: 9.19 ft at 1:30AM Apr 14, 2014Observed: 9.19 ft at 2:00AM Apr 14, 2014Observed: 9.19 ft at 2:30AM Apr 14, 2014Observed: 9.19 ft at 3:00AM Apr 14, 2014Observed: 9.19 ft at 3:30AM Apr 14, 2014Observed: 9.18 ft at 4:00AM Apr 14, 2014Observed: 9.18 ft at 4:30AM Apr 14, 2014Observed: 9.18 ft at 5:00AM Apr 14, 2014Observed: 9.18 ft at 5:30AM Apr 14, 2014Observed: 9.18 ft at 6:00AM Apr 14, 2014Observed: 9.18 ft at 6:30AM Apr 14, 2014Observed: 9.18 ft at 7:00AM Apr 14, 2014Observed: 9.18 ft at 7:30AM Apr 14, 2014Observed: 9.17 ft at 8:00AM Apr 14, 2014Observed: 9.17 ft at 8:30AM Apr 14, 2014Observed: 9.17 ft at 9:00AM Apr 14, 2014Observed: 9.16 ft at 9:30AM Apr 14, 2014Observed: 9.16 ft at 10:00AM Apr 14, 2014Observed: 9.16 ft at 10:30AM Apr 14, 2014Observed: 9.15 ft at 11:00AM Apr 14, 2014Observed: 9.15 ft at 11:30AM Apr 14, 2014Observed: 9.14 ft at 12:00PM Apr 14, 2014Observed: 9.14 ft at 12:30PM Apr 14, 2014Observed: 9.14 ft at 1:00PM Apr 14, 2014Observed: 9.13 ft at 1:30PM Apr 14, 2014Observed: 9.13 ft at 2:00PM Apr 14, 2014Observed: 9.13 ft at 2:30PM Apr 14, 2014Observed: 9.12 ft at 3:00PM Apr 14, 2014Observed: 9.12 ft at 3:30PM Apr 14, 2014Observed: 9.11 ft at 4:00PM Apr 14, 2014Observed: 9.11 ft at 4:30PM Apr 14, 2014Observed: 9.11 ft at 5:00PM Apr 14, 2014Observed: 9.11 ft at 5:30PM Apr 14, 2014Observed: 9.11 ft at 6:00PM Apr 14, 2014Observed: 9.1 ft at 6:30PM Apr 14, 2014Observed: 9.09 ft at 7:00PM Apr 14, 2014Observed: 9.09 ft at 7:30PM Apr 14, 2014Observed: 9.09 ft at 8:00PM Apr 14, 2014Observed: 9.09 ft at 8:30PM Apr 14, 2014Observed: 9.09 ft at 9:00PM Apr 14, 2014Observed: 9.09 ft at 9:30PM Apr 14, 2014Observed: 9.09 ft at 10:00PM Apr 14, 2014Observed: 9.08 ft at 10:30PM Apr 14, 2014Observed: 9.07 ft at 11:00PM Apr 14, 2014Observed: 9.08 ft at 11:01PM Apr 14, 2014Observed: 9.06 ft at 11:30PM Apr 14, 2014Observed: 9.06 ft at 12:00AM Apr 15, 2014Observed: 9.05 ft at 12:30AM Apr 15, 2014Observed: 9.04 ft at 1:00AM Apr 15, 2014Observed: 9.04 ft at 1:30AM Apr 15, 2014Observed: 9.03 ft at 2:00AM Apr 15, 2014Observed: 9.03 ft at 2:30AM Apr 15, 2014Observed: 9.02 ft at 3:00AM Apr 15, 2014Observed: 9.01 ft at 3:30AM Apr 15, 2014Observed: 9 ft at 4:00AM Apr 15, 2014Observed: 9 ft at 4:30AM Apr 15, 2014Observed: 8.98 ft at 5:00AM Apr 15, 2014Observed: 8.98 ft at 5:15AM Apr 15, 2014Observed: 8.98 ft at 5:30AM Apr 15, 2014Observed: 8.97 ft at 6:00AM Apr 15, 2014Observed: 8.97 ft at 6:30AM Apr 15, 2014Observed: 8.96 ft at 7:00AM Apr 15, 2014Observed: 8.95 ft at 7:30AM Apr 15, 2014Observed: 8.93 ft at 8:00AM Apr 15, 2014Observed: 8.93 ft at 8:30AM Apr 15, 2014Observed: 8.93 ft at 9:00AM Apr 15, 2014Observed: 8.92 ft at 9:30AM Apr 15, 2014Observed: 8.92 ft at 10:00AM Apr 15, 2014Observed: 8.92 ft at 10:30AM Apr 15, 2014Observed: 8.92 ft at 11:00AM Apr 15, 2014Observed: 8.92 ft at 11:16AM Apr 15, 2014Observed: 8.92 ft at 11:30AM Apr 15, 2014Observed: 8.92 ft at 12:00PM Apr 15, 2014Observed: 8.92 ft at 12:30PM Apr 15, 2014Observed: 8.92 ft at 1:00PM Apr 15, 2014Observed: 8.92 ft at 1:30PM Apr 15, 2014Observed: 8.92 ft at 2:00PM Apr 15, 2014Observed: 8.92 ft at 2:30PM Apr 15, 2014Observed: 8.93 ft at 3:00PM Apr 15, 2014Observed: 8.94 ft at 3:30PM Apr 15, 2014Observed: 8.94 ft at 4:00PM Apr 15, 2014Observed: 8.94 ft at 4:30PM Apr 15, 2014Observed: 8.95 ft at 5:00PM Apr 15, 2014Observed: 8.95 ft at 5:16PM Apr 15, 2014Observed: 8.95 ft at 5:30PM Apr 15, 2014Observed: 8.96 ft at 6:00PM Apr 15, 2014Observed: 8.96 ft at 6:30PM Apr 15, 2014Observed: 8.98 ft at 7:00PM Apr 15, 2014Observed: 8.99 ft at 7:30PM Apr 15, 2014Observed: 9.01 ft at 8:00PM Apr 15, 2014Observed: 9.03 ft at 8:30PM Apr 15, 2014Observed: 9.05 ft at 9:00PM Apr 15, 2014Observed: 9.05 ft at 9:30PM Apr 15, 2014Observed: 9.07 ft at 10:00PM Apr 15, 2014Observed: 9.08 ft at 10:30PM Apr 15, 2014Observed: 9.09 ft at 11:00PM Apr 15, 2014Observed: 9.09 ft at 11:16PM Apr 15, 2014Observed: 9.1 ft at 11:30PM Apr 15, 2014Observed: 9.11 ft at 12:00AM Apr 16, 2014Observed: 9.11 ft at 12:30AM Apr 16, 2014Observed: 9.12 ft at 1:00AM Apr 16, 2014Observed: 9.12 ft at 1:30AM Apr 16, 2014Observed: 9.16 ft at 2:00AM Apr 16, 2014Observed: 9.17 ft at 2:30AM Apr 16, 2014Observed: 9.21 ft at 3:00AM Apr 16, 2014Observed: 9.23 ft at 3:30AM Apr 16, 2014Observed: 9.26 ft at 4:00AM Apr 16, 2014Observed: 9.26 ft at 4:30AM Apr 16, 2014Observed: 9.28 ft at 5:00AM Apr 16, 2014Observed: 9.28 ft at 5:15AM Apr 16, 2014Observed: 9.28 ft at 5:30AM Apr 16, 2014Observed: 9.28 ft at 6:00AM Apr 16, 2014Observed: 9.28 ft at 6:30AM Apr 16, 2014Observed: 9.29 ft at 7:00AM Apr 16, 2014Observed: 9.29 ft at 7:30AM Apr 16, 2014Highest Observation: 9.3 ft at 8:00AM Apr 16, 2014Highest Observation: 9.3 ft at 8:30AM Apr 16, 2014Forecast: 9.6 ft 2:00PM Apr 16, 2014Forecast: 9.8 ft 8:00PM Apr 16, 2014Forecast: 10 ft 2:00AM Apr 17, 2014Forecast: 10.2 ft 8:00AM Apr 17, 2014Forecast: 10.3 ft 2:00PM Apr 17, 2014Forecast: 10.3 ft 8:00PM Apr 17, 2014Highest Forecast: 10.4 ft 2:00AM Apr 18, 2014Forecast: 10.3 ft 8:00AM Apr 18, 2014Forecast: 10.3 ft 2:00PM Apr 18, 2014Forecast: 10.2 ft 8:00PM Apr 18, 2014Forecast: 10 ft 2:00AM Apr 19, 2014USGS--Water Resources of the United StatesGOFN3(plotting HGIRG) Graph Created (9:15AM Apr 16, 2014)ObservedForecast (issued 4:55AM Apr 16)Latest observed value: 9.3 ft at 8:30 AM EDT 16-Apr-2014. Flood Stage is 11 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
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Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts for the Merrimack River at Goffs Falls are issued routinely year-round.

Return to Area Map
 
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) 0.98 ft on 10/11/1964
Zoom Level: 16
Gauge Location
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
36.29 THIS IS THE MAXIMUM REPORTABLE LEVEL OF THE RIVER GAGE.
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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Page last modified: 8-Apr-2014 8:38 AM
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