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Weather Forecast Office Boston, MA Northeast River Forecast Center
Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Shawsheen River at Wilmington Stage (ft)Flow (kcfs)Observed: 2.34 ft at 6:15PM May 16, 2013Observed: 2.34 ft at 6:30PM May 16, 2013Observed: 2.34 ft at 6:45PM May 16, 2013Observed: 2.33 ft at 7:00PM May 16, 2013Observed: 2.33 ft at 7:15PM May 16, 2013Observed: 2.33 ft at 7:30PM May 16, 2013Observed: 2.33 ft at 7:45PM May 16, 2013Observed: 2.33 ft at 8:00PM May 16, 2013Observed: 2.33 ft at 8:15PM May 16, 2013Observed: 2.33 ft at 8:30PM May 16, 2013Observed: 2.33 ft at 8:45PM May 16, 2013Observed: 2.33 ft at 9:00PM May 16, 2013Observed: 2.32 ft at 9:15PM May 16, 2013Observed: 2.32 ft at 9:30PM May 16, 2013Observed: 2.32 ft at 9:45PM May 16, 2013Observed: 2.32 ft at 10:00PM May 16, 2013Observed: 2.32 ft at 10:15PM May 16, 2013Observed: 2.32 ft at 10:30PM May 16, 2013Observed: 2.32 ft at 10:45PM May 16, 2013Observed: 2.32 ft at 11:00PM May 16, 2013Observed: 2.32 ft at 11:15PM May 16, 2013Observed: 2.31 ft at 11:30PM May 16, 2013Observed: 2.31 ft at 11:45PM May 16, 2013Observed: 2.31 ft at 12:00AM May 17, 2013Observed: 2.31 ft at 12:15AM May 17, 2013Observed: 2.31 ft at 12:30AM May 17, 2013Observed: 2.31 ft at 12:45AM May 17, 2013Observed: 2.32 ft at 1:00AM May 17, 2013Observed: 2.32 ft at 1:15AM May 17, 2013Observed: 2.32 ft at 1:30AM May 17, 2013Observed: 2.33 ft at 1:45AM May 17, 2013Observed: 2.34 ft at 2:00AM May 17, 2013Observed: 2.34 ft at 2:15AM May 17, 2013Observed: 2.35 ft at 2:30AM May 17, 2013Observed: 2.36 ft at 2:45AM May 17, 2013Observed: 2.36 ft at 3:00AM May 17, 2013Observed: 2.37 ft at 3:15AM May 17, 2013Observed: 2.37 ft at 3:30AM May 17, 2013Observed: 2.38 ft at 3:45AM May 17, 2013Observed: 2.38 ft at 4:00AM May 17, 2013Observed: 2.39 ft at 4:15AM May 17, 2013Observed: 2.39 ft at 4:30AM May 17, 2013Observed: 2.4 ft at 4:45AM May 17, 2013Observed: 2.4 ft at 5:00AM May 17, 2013Observed: 2.4 ft at 5:15AM May 17, 2013Observed: 2.4 ft at 5:30AM May 17, 2013Observed: 2.4 ft at 5:45AM May 17, 2013Observed: 2.41 ft at 6:00AM May 17, 2013Highest Observation: 2.42 ft at 6:15AM May 17, 2013Highest Observation: 2.42 ft at 6:30AM May 17, 2013Highest Observation: 2.42 ft at 6:45AM May 17, 2013Highest Observation: 2.42 ft at 7:00AM May 17, 2013Highest Observation: 2.42 ft at 7:15AM May 17, 2013Highest Observation: 2.42 ft at 7:30AM May 17, 2013Highest Observation: 2.42 ft at 7:45AM May 17, 2013Highest Observation: 2.42 ft at 8:00AM May 17, 2013Observed: 2.41 ft at 8:15AM May 17, 2013Observed: 2.41 ft at 8:30AM May 17, 2013Highest Observation: 2.42 ft at 8:45AM May 17, 2013Highest Observation: 2.42 ft at 9:00AM May 17, 2013Highest Observation: 2.42 ft at 9:15AM May 17, 2013Highest Observation: 2.42 ft at 9:30AM May 17, 2013Highest Observation: 2.42 ft at 9:45AM May 17, 2013Highest Observation: 2.42 ft at 10:00AM May 17, 2013Highest Observation: 2.42 ft at 10:15AM May 17, 2013Highest Observation: 2.42 ft at 10:30AM May 17, 2013Highest Observation: 2.42 ft at 10:45AM May 17, 2013Highest Observation: 2.42 ft at 11:00AM May 17, 2013Highest Observation: 2.42 ft at 11:15AM May 17, 2013Highest Observation: 2.42 ft at 11:30AM May 17, 2013Highest Observation: 2.42 ft at 11:45AM May 17, 2013Observed: 2.41 ft at 12:00PM May 17, 2013Highest Observation: 2.42 ft at 12:15PM May 17, 2013Observed: 2.41 ft at 12:30PM May 17, 2013Observed: 2.41 ft at 12:45PM May 17, 2013Observed: 2.41 ft at 1:00PM May 17, 2013Observed: 2.41 ft at 1:15PM May 17, 2013Observed: 2.41 ft at 1:30PM May 17, 2013Observed: 2.41 ft at 1:45PM May 17, 2013Observed: 2.41 ft at 2:00PM May 17, 2013Observed: 2.4 ft at 2:15PM May 17, 2013Observed: 2.41 ft at 2:30PM May 17, 2013Observed: 2.41 ft at 2:45PM May 17, 2013Observed: 2.4 ft at 3:00PM May 17, 2013Observed: 2.41 ft at 3:15PM May 17, 2013Observed: 2.4 ft at 3:30PM May 17, 2013Observed: 2.4 ft at 3:45PM May 17, 2013Observed: 2.4 ft at 4:00PM May 17, 2013Observed: 2.4 ft at 4:15PM May 17, 2013Observed: 2.4 ft at 4:30PM May 17, 2013Observed: 2.4 ft at 4:45PM May 17, 2013Observed: 2.4 ft at 5:00PM May 17, 2013Observed: 2.4 ft at 5:15PM May 17, 2013Observed: 2.4 ft at 5:30PM May 17, 2013Observed: 2.4 ft at 5:45PM May 17, 2013Observed: 2.4 ft at 6:00PM May 17, 2013Observed: 2.39 ft at 6:15PM May 17, 2013Observed: 2.39 ft at 6:30PM May 17, 2013Observed: 2.39 ft at 6:45PM May 17, 2013Observed: 2.39 ft at 7:00PM May 17, 2013Observed: 2.39 ft at 7:15PM May 17, 2013Observed: 2.39 ft at 7:30PM May 17, 2013Observed: 2.39 ft at 7:45PM May 17, 2013Observed: 2.39 ft at 8:00PM May 17, 2013Observed: 2.39 ft at 8:15PM May 17, 2013Observed: 2.39 ft at 8:30PM May 17, 2013Observed: 2.39 ft at 8:45PM May 17, 2013Observed: 2.39 ft at 9:00PM May 17, 2013Observed: 2.39 ft at 9:15PM May 17, 2013Observed: 2.38 ft at 9:30PM May 17, 2013Observed: 2.38 ft at 9:45PM May 17, 2013Observed: 2.38 ft at 10:00PM May 17, 2013Observed: 2.38 ft at 10:15PM May 17, 2013Observed: 2.38 ft at 10:30PM May 17, 2013Observed: 2.38 ft at 10:45PM May 17, 2013Observed: 2.38 ft at 11:00PM May 17, 2013Observed: 2.38 ft at 11:15PM May 17, 2013Observed: 2.38 ft at 11:30PM May 17, 2013Observed: 2.38 ft at 11:45PM May 17, 2013Observed: 2.38 ft at 12:00AM May 18, 2013Observed: 2.38 ft at 12:15AM May 18, 2013Observed: 2.39 ft at 12:30AM May 18, 2013Observed: 2.39 ft at 12:45AM May 18, 2013Observed: 2.38 ft at 1:00AM May 18, 2013Observed: 2.38 ft at 1:15AM May 18, 2013Observed: 2.38 ft at 1:30AM May 18, 2013Observed: 2.38 ft at 1:45AM May 18, 2013Observed: 2.38 ft at 2:00AM May 18, 2013Observed: 2.38 ft at 2:15AM May 18, 2013Observed: 2.38 ft at 2:30AM May 18, 2013Observed: 2.38 ft at 2:45AM May 18, 2013Observed: 2.38 ft at 3:00AM May 18, 2013Observed: 2.38 ft at 3:15AM May 18, 2013Observed: 2.38 ft at 3:30AM May 18, 2013Observed: 2.38 ft at 3:45AM May 18, 2013Observed: 2.38 ft at 4:00AM May 18, 2013Observed: 2.38 ft at 4:15AM May 18, 2013Observed: 2.38 ft at 4:30AM May 18, 2013Observed: 2.38 ft at 4:45AM May 18, 2013Observed: 2.37 ft at 5:00AM May 18, 2013Observed: 2.37 ft at 5:15AM May 18, 2013Observed: 2.37 ft at 5:30AM May 18, 2013Observed: 2.37 ft at 5:45AM May 18, 2013Observed: 2.37 ft at 6:00AM May 18, 2013Observed: 2.37 ft at 6:15AM May 18, 2013Observed: 2.37 ft at 6:30AM May 18, 2013Observed: 2.37 ft at 6:45AM May 18, 2013Observed: 2.37 ft at 7:00AM May 18, 2013Observed: 2.37 ft at 7:15AM May 18, 2013Observed: 2.37 ft at 7:30AM May 18, 2013Observed: 2.37 ft at 7:45AM May 18, 2013Observed: 2.37 ft at 8:00AM May 18, 2013Observed: 2.37 ft at 8:15AM May 18, 2013Observed: 2.37 ft at 8:30AM May 18, 2013Observed: 2.37 ft at 8:45AM May 18, 2013Observed: 2.37 ft at 9:00AM May 18, 2013Observed: 2.37 ft at 9:15AM May 18, 2013Observed: 2.37 ft at 9:30AM May 18, 2013Observed: 2.37 ft at 9:45AM May 18, 2013Observed: 2.37 ft at 10:00AM May 18, 2013Observed: 2.36 ft at 10:15AM May 18, 2013Observed: 2.37 ft at 10:30AM May 18, 2013Observed: 2.37 ft at 10:45AM May 18, 2013Observed: 2.36 ft at 11:00AM May 18, 2013Observed: 2.36 ft at 11:15AM May 18, 2013Observed: 2.36 ft at 11:30AM May 18, 2013Observed: 2.36 ft at 11:45AM May 18, 2013Observed: 2.36 ft at 12:00PM May 18, 2013Observed: 2.36 ft at 12:15PM May 18, 2013Observed: 2.36 ft at 12:30PM May 18, 2013Observed: 2.36 ft at 12:45PM May 18, 2013Observed: 2.36 ft at 1:00PM May 18, 2013Observed: 2.36 ft at 1:15PM May 18, 2013Observed: 2.36 ft at 1:30PM May 18, 2013Observed: 2.36 ft at 1:45PM May 18, 2013Observed: 2.36 ft at 2:00PM May 18, 2013Observed: 2.36 ft at 2:15PM May 18, 2013Observed: 2.37 ft at 2:30PM May 18, 2013Observed: 2.36 ft at 2:45PM May 18, 2013Observed: 2.36 ft at 3:00PM May 18, 2013Observed: 2.36 ft at 3:15PM May 18, 2013Observed: 2.36 ft at 3:30PM May 18, 2013Observed: 2.36 ft at 3:45PM May 18, 2013Observed: 2.36 ft at 4:00PM May 18, 2013Observed: 2.36 ft at 4:15PM May 18, 2013Observed: 2.36 ft at 4:30PM May 18, 2013Observed: 2.36 ft at 4:45PM May 18, 2013Observed: 2.36 ft at 5:00PM May 18, 2013Observed: 2.37 ft at 5:15PM May 18, 2013Observed: 2.37 ft at 5:30PM May 18, 2013Observed: 2.37 ft at 5:45PM May 18, 2013Observed: 2.37 ft at 6:00PM May 18, 2013Observed: 2.37 ft at 6:15PM May 18, 2013Observed: 2.37 ft at 6:30PM May 18, 2013Observed: 2.36 ft at 6:45PM May 18, 2013Observed: 2.36 ft at 7:00PM May 18, 2013Observed: 2.36 ft at 7:15PM May 18, 2013Observed: 2.36 ft at 7:30PM May 18, 2013Observed: 2.36 ft at 7:45PM May 18, 2013Observed: 2.36 ft at 8:00PM May 18, 2013Observed: 2.36 ft at 8:15PM May 18, 2013Observed: 2.36 ft at 8:30PM May 18, 2013Observed: 2.36 ft at 8:45PM May 18, 2013Observed: 2.36 ft at 9:00PM May 18, 2013Observed: 2.36 ft at 9:15PM May 18, 2013Observed: 2.36 ft at 9:30PM May 18, 2013Observed: 2.36 ft at 9:45PM May 18, 2013Observed: 2.36 ft at 10:00PM May 18, 2013Observed: 2.36 ft at 10:15PM May 18, 2013Observed: 2.35 ft at 10:30PM May 18, 2013Observed: 2.35 ft at 10:45PM May 18, 2013Observed: 2.35 ft at 11:00PM May 18, 2013Observed: 2.35 ft at 11:15PM May 18, 2013Observed: 2.35 ft at 11:30PM May 18, 2013Observed: 2.35 ft at 11:45PM May 18, 2013Observed: 2.35 ft at 12:00AM May 19, 2013Observed: 2.35 ft at 12:15AM May 19, 2013Observed: 2.35 ft at 12:30AM May 19, 2013Observed: 2.35 ft at 12:45AM May 19, 2013Observed: 2.35 ft at 1:00AM May 19, 2013Observed: 2.35 ft at 1:15AM May 19, 2013Observed: 2.35 ft at 1:30AM May 19, 2013Observed: 2.35 ft at 1:45AM May 19, 2013Observed: 2.35 ft at 2:00AM May 19, 2013Observed: 2.35 ft at 2:15AM May 19, 2013Observed: 2.35 ft at 2:30AM May 19, 2013Observed: 2.35 ft at 2:45AM May 19, 2013Observed: 2.35 ft at 3:00AM May 19, 2013Observed: 2.35 ft at 3:15AM May 19, 2013Observed: 2.35 ft at 3:30AM May 19, 2013Observed: 2.35 ft at 3:45AM May 19, 2013Observed: 2.35 ft at 4:00AM May 19, 2013Observed: 2.35 ft at 4:15AM May 19, 2013Observed: 2.35 ft at 4:30AM May 19, 2013Observed: 2.35 ft at 4:45AM May 19, 2013Observed: 2.34 ft at 5:00AM May 19, 2013Observed: 2.34 ft at 5:15AM May 19, 2013Observed: 2.34 ft at 5:30AM May 19, 2013Observed: 2.34 ft at 5:45AM May 19, 2013Observed: 2.34 ft at 6:00AM May 19, 2013Observed: 2.34 ft at 6:15AM May 19, 2013Observed: 2.34 ft at 6:30AM May 19, 2013Observed: 2.34 ft at 6:45AM May 19, 2013Observed: 2.34 ft at 7:00AM May 19, 2013Observed: 2.34 ft at 7:15AM May 19, 2013Observed: 2.34 ft at 7:30AM May 19, 2013Observed: 2.34 ft at 7:45AM May 19, 2013Observed: 2.34 ft at 8:00AM May 19, 2013Observed: 2.34 ft at 8:15AM May 19, 2013Observed: 2.34 ft at 8:30AM May 19, 2013Observed: 2.34 ft at 8:45AM May 19, 2013Observed: 2.34 ft at 9:00AM May 19, 2013Observed: 2.35 ft at 9:15AM May 19, 2013Observed: 2.35 ft at 9:30AM May 19, 2013Observed: 2.35 ft at 9:45AM May 19, 2013Observed: 2.35 ft at 10:00AM May 19, 2013Observed: 2.35 ft at 10:15AM May 19, 2013Observed: 2.35 ft at 10:30AM May 19, 2013Observed: 2.35 ft at 10:45AM May 19, 2013Observed: 2.35 ft at 11:00AM May 19, 2013Observed: 2.35 ft at 11:15AM May 19, 2013Observed: 2.35 ft at 11:30AM May 19, 2013Observed: 2.35 ft at 11:45AM May 19, 2013Observed: 2.35 ft at 12:00PM May 19, 2013Observed: 2.35 ft at 12:15PM May 19, 2013Observed: 2.35 ft at 12:30PM May 19, 2013Observed: 2.35 ft at 12:45PM May 19, 2013Observed: 2.35 ft at 1:00PM May 19, 2013Observed: 2.35 ft at 1:15PM May 19, 2013Observed: 2.34 ft at 1:30PM May 19, 2013Observed: 2.35 ft at 1:45PM May 19, 2013Observed: 2.35 ft at 2:00PM May 19, 2013Observed: 2.35 ft at 2:15PM May 19, 2013Observed: 2.35 ft at 2:30PM May 19, 2013Observed: 2.35 ft at 2:45PM May 19, 2013Observed: 2.35 ft at 3:00PM May 19, 2013Observed: 2.35 ft at 3:15PM May 19, 2013Observed: 2.35 ft at 3:30PM May 19, 2013Observed: 2.35 ft at 3:45PM May 19, 2013Observed: 2.34 ft at 4:00PM May 19, 2013Observed: 2.34 ft at 4:15PM May 19, 2013Observed: 2.35 ft at 4:30PM May 19, 2013Forecast: 2.3 ft 8:00PM May 19, 2013Forecast: 2.3 ft 2:00AM May 20, 2013Forecast: 2.3 ft 8:00AM May 20, 2013Forecast: 2.3 ft 2:00PM May 20, 2013Highest Forecast: 2.4 ft 8:00PM May 20, 2013Highest Forecast: 2.4 ft 2:00AM May 21, 2013Highest Forecast: 2.4 ft 8:00AM May 21, 2013Highest Forecast: 2.4 ft 2:00PM May 21, 2013Forecast: 2.3 ft 8:00PM May 21, 2013Forecast: 2.3 ft 2:00AM May 22, 2013Forecast: 2.3 ft 8:00AM May 22, 2013USGS--Water Resources of the United StatesWLMM3(plotting HGIRG) Graph Created (6:01PM May 19, 2013)ObservedForecast (issued 11:02AM May 19)Latest observed value: 2.35 ft at 4:30 PM EDT 19-May-2013. Flood Stage is 7 ft
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About this graph
Tabular Data
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Datum: Not Available
Metadata
NOTE: Forecasts for the Shawsheen River at Wilmington are issued routinely year-round.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage:10
Moderate Flood Stage:8
Flood Stage:7
Action Stage:5

Historical Crests
(1) 10.59 ft on 03/16/2010
(2) 10.49 ft on 10/22/1996
(3) 9.87 ft on 03/23/2001
(4) 9.85 ft on 01/26/1979
(5) 9.42 ft on 03/31/2010
Show More Historical Crests

Low Water Records
Legend
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
11 FLOODING WILL AFFECT AREAS ALONG THE RIVER FROM WILMINGTON TO LAWRENCE. SOME ROADS WILL BECOME IMPASSABLE INCLUDING ROUTE 114 NEAR THE I495 INTERCHANGE. FOLLOW THE ADVICE OF LOCAL OFFICIALS...AND EVACUATE IF ASKED TO DO SO. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. BASEMENT FLOODING IN LOW LYING AREAS IS LIKELY AND VALUABLES SHOULD BE MOVED TO HIGHER GROUND.
9 FLOODING WILL AFFECT AREAS ALONG THE RIVER FROM WILMINGTON TO LAWRENCE. SOME ROADS WILL BECOME IMPASSABLE INCLUDING ROUTE 114 NEAR THE I495 INTERCHANGE. FOLLOW THE ADVICE OF LOCAL OFFICIALS...AND EVACUATE IF ASKED TO DO SO. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. BASEMENT FLOODING IN LOW LYING AREAS IS LIKELY AND VALUABLES SHOULD BE MOVED TO HIGHER GROUND.
8 FLOODING WILL AFFECT LOW LYING NEIGHBORHOODS FROM WILMINGTON THROUGH TEWKSBURY TO LAWRENCE. THIS INCLUDES A PORTION OF ROUTE 114 IN LAWRENCE. AREAS SUBJECT TO BASEMENT FLOODING SHOULD MOVE VALUABLES TO HIGHER GROUND.
7.5 FLOOD WATERS WILL INUNDATE A PORTION OF ROUTE 114 IN LAWRENCE...AND ALSO AFFECT LOW LYING AREAS FROM WILMINGTON THROUGH LAWRENCE.
7 FLOODING WILL AFFECT LOW LYING AREAS ALONG THE RIVER FROM WILMINGTON THROUGH LAWRENCE.
About This Location Collapse

Latitude: 42.568056° N, Longitude: 71.215278° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 7 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  

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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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