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Hydrograph River at a Glance Download
Assabet River at Maynard Stage (ft)Flow (kcfs)Observed: 1.48 ft at 2:30AM Jul 25, 2014Observed: 1.48 ft at 2:45AM Jul 25, 2014Observed: 1.48 ft at 3:00AM Jul 25, 2014Observed: 1.48 ft at 3:15AM Jul 25, 2014Observed: 1.48 ft at 3:30AM Jul 25, 2014Observed: 1.48 ft at 3:45AM Jul 25, 2014Observed: 1.48 ft at 4:00AM Jul 25, 2014Observed: 1.48 ft at 4:15AM Jul 25, 2014Observed: 1.48 ft at 4:30AM Jul 25, 2014Observed: 1.47 ft at 4:45AM Jul 25, 2014Observed: 1.47 ft at 5:00AM Jul 25, 2014Observed: 1.47 ft at 5:15AM Jul 25, 2014Observed: 1.47 ft at 5:30AM Jul 25, 2014Observed: 1.47 ft at 5:45AM Jul 25, 2014Observed: 1.47 ft at 6:00AM Jul 25, 2014Observed: 1.47 ft at 6:15AM Jul 25, 2014Observed: 1.47 ft at 6:30AM Jul 25, 2014Observed: 1.47 ft at 6:45AM Jul 25, 2014Observed: 1.47 ft at 7:00AM Jul 25, 2014Observed: 1.47 ft at 7:15AM Jul 25, 2014Observed: 1.47 ft at 7:30AM Jul 25, 2014Observed: 1.47 ft at 7:45AM Jul 25, 2014Observed: 1.47 ft at 8:00AM Jul 25, 2014Observed: 1.47 ft at 8:15AM Jul 25, 2014Observed: 1.47 ft at 8:30AM Jul 25, 2014Observed: 1.47 ft at 8:45AM Jul 25, 2014Observed: 1.47 ft at 9:00AM Jul 25, 2014Observed: 1.47 ft at 9:15AM Jul 25, 2014Observed: 1.47 ft at 9:30AM Jul 25, 2014Observed: 1.48 ft at 9:45AM Jul 25, 2014Observed: 1.48 ft at 10:00AM Jul 25, 2014Observed: 1.48 ft at 10:15AM Jul 25, 2014Observed: 1.48 ft at 10:30AM Jul 25, 2014Observed: 1.48 ft at 10:45AM Jul 25, 2014Observed: 1.48 ft at 11:00AM Jul 25, 2014Observed: 1.48 ft at 11:15AM Jul 25, 2014Observed: 1.48 ft at 11:30AM Jul 25, 2014Observed: 1.48 ft at 11:45AM Jul 25, 2014Observed: 1.48 ft at 12:00PM Jul 25, 2014Observed: 1.47 ft at 12:15PM Jul 25, 2014Observed: 1.47 ft at 12:30PM Jul 25, 2014Observed: 1.46 ft at 12:45PM Jul 25, 2014Observed: 1.46 ft at 1:00PM Jul 25, 2014Observed: 1.45 ft at 1:15PM Jul 25, 2014Observed: 1.45 ft at 1:30PM Jul 25, 2014Observed: 1.45 ft at 1:45PM Jul 25, 2014Observed: 1.44 ft at 2:00PM Jul 25, 2014Observed: 1.44 ft at 2:15PM Jul 25, 2014Observed: 1.44 ft at 2:30PM Jul 25, 2014Observed: 1.44 ft at 2:45PM Jul 25, 2014Observed: 1.44 ft at 3:00PM Jul 25, 2014Observed: 1.44 ft at 3:15PM Jul 25, 2014Observed: 1.44 ft at 3:30PM Jul 25, 2014Observed: 1.44 ft at 3:45PM Jul 25, 2014Observed: 1.44 ft at 4:00PM Jul 25, 2014Observed: 1.44 ft at 4:15PM Jul 25, 2014Observed: 1.44 ft at 4:30PM Jul 25, 2014Observed: 1.43 ft at 4:45PM Jul 25, 2014Observed: 1.43 ft at 5:00PM Jul 25, 2014Observed: 1.43 ft at 5:15PM Jul 25, 2014Observed: 1.43 ft at 5:30PM Jul 25, 2014Observed: 1.43 ft at 5:45PM Jul 25, 2014Observed: 1.43 ft at 6:00PM Jul 25, 2014Observed: 1.43 ft at 6:15PM Jul 25, 2014Observed: 1.42 ft at 6:30PM Jul 25, 2014Observed: 1.42 ft at 6:45PM Jul 25, 2014Observed: 1.42 ft at 7:00PM Jul 25, 2014Observed: 1.42 ft at 7:15PM Jul 25, 2014Observed: 1.42 ft at 7:30PM Jul 25, 2014Observed: 1.41 ft at 7:45PM Jul 25, 2014Observed: 1.41 ft at 8:00PM Jul 25, 2014Observed: 1.41 ft at 8:15PM Jul 25, 2014Observed: 1.41 ft at 8:30PM Jul 25, 2014Observed: 1.41 ft at 8:45PM Jul 25, 2014Observed: 1.41 ft at 9:00PM Jul 25, 2014Observed: 1.41 ft at 9:15PM Jul 25, 2014Observed: 1.41 ft at 9:30PM Jul 25, 2014Observed: 1.41 ft at 9:45PM Jul 25, 2014Observed: 1.41 ft at 10:00PM Jul 25, 2014Observed: 1.4 ft at 10:15PM Jul 25, 2014Observed: 1.4 ft at 10:30PM Jul 25, 2014Observed: 1.4 ft at 10:45PM Jul 25, 2014Observed: 1.4 ft at 11:00PM Jul 25, 2014Observed: 1.4 ft at 11:15PM Jul 25, 2014Observed: 1.4 ft at 11:30PM Jul 25, 2014Observed: 1.4 ft at 11:45PM Jul 25, 2014Observed: 1.4 ft at 12:00AM Jul 26, 2014Observed: 1.4 ft at 12:15AM Jul 26, 2014Observed: 1.4 ft at 12:30AM Jul 26, 2014Observed: 1.4 ft at 12:45AM Jul 26, 2014Observed: 1.4 ft at 1:00AM Jul 26, 2014Observed: 1.4 ft at 1:15AM Jul 26, 2014Observed: 1.4 ft at 1:30AM Jul 26, 2014Observed: 1.4 ft at 1:45AM Jul 26, 2014Observed: 1.4 ft at 2:00AM Jul 26, 2014Observed: 1.39 ft at 2:15AM Jul 26, 2014Observed: 1.39 ft at 2:30AM Jul 26, 2014Observed: 1.4 ft at 2:45AM Jul 26, 2014Observed: 1.39 ft at 3:00AM Jul 26, 2014Observed: 1.39 ft at 3:15AM Jul 26, 2014Observed: 1.39 ft at 3:30AM Jul 26, 2014Observed: 1.39 ft at 3:45AM Jul 26, 2014Observed: 1.39 ft at 4:00AM Jul 26, 2014Observed: 1.39 ft at 4:15AM Jul 26, 2014Observed: 1.39 ft at 4:30AM Jul 26, 2014Observed: 1.39 ft at 4:45AM Jul 26, 2014Observed: 1.39 ft at 5:00AM Jul 26, 2014Observed: 1.39 ft at 5:15AM Jul 26, 2014Observed: 1.39 ft at 5:30AM Jul 26, 2014Observed: 1.39 ft at 5:45AM Jul 26, 2014Observed: 1.39 ft at 6:00AM Jul 26, 2014Observed: 1.39 ft at 6:15AM Jul 26, 2014Observed: 1.39 ft at 6:30AM Jul 26, 2014Observed: 1.39 ft at 6:45AM Jul 26, 2014Observed: 1.39 ft at 7:00AM Jul 26, 2014Observed: 1.39 ft at 7:15AM Jul 26, 2014Observed: 1.39 ft at 7:30AM Jul 26, 2014Observed: 1.39 ft at 7:45AM Jul 26, 2014Observed: 1.39 ft at 8:00AM Jul 26, 2014Observed: 1.39 ft at 8:15AM Jul 26, 2014Observed: 1.39 ft at 8:30AM Jul 26, 2014Observed: 1.39 ft at 8:45AM Jul 26, 2014Observed: 1.39 ft at 9:00AM Jul 26, 2014Observed: 1.39 ft at 9:15AM Jul 26, 2014Observed: 1.39 ft at 9:30AM Jul 26, 2014Observed: 1.39 ft at 9:45AM Jul 26, 2014Observed: 1.4 ft at 10:00AM Jul 26, 2014Observed: 1.4 ft at 10:15AM Jul 26, 2014Observed: 1.4 ft at 10:30AM Jul 26, 2014Observed: 1.4 ft at 10:45AM Jul 26, 2014Observed: 1.4 ft at 11:00AM Jul 26, 2014Observed: 1.4 ft at 11:15AM Jul 26, 2014Observed: 1.4 ft at 11:30AM Jul 26, 2014Observed: 1.4 ft at 11:45AM Jul 26, 2014Observed: 1.4 ft at 12:00PM Jul 26, 2014Observed: 1.4 ft at 12:15PM Jul 26, 2014Observed: 1.4 ft at 12:30PM Jul 26, 2014Observed: 1.4 ft at 12:45PM Jul 26, 2014Observed: 1.4 ft at 1:00PM Jul 26, 2014Observed: 1.4 ft at 1:15PM Jul 26, 2014Observed: 1.4 ft at 1:30PM Jul 26, 2014Observed: 1.4 ft at 1:45PM Jul 26, 2014Observed: 1.4 ft at 2:00PM Jul 26, 2014Observed: 1.4 ft at 2:15PM Jul 26, 2014Observed: 1.4 ft at 2:30PM Jul 26, 2014Observed: 1.4 ft at 2:45PM Jul 26, 2014Observed: 1.39 ft at 3:00PM Jul 26, 2014Observed: 1.39 ft at 3:15PM Jul 26, 2014Observed: 1.39 ft at 3:30PM Jul 26, 2014Observed: 1.39 ft at 3:45PM Jul 26, 2014Observed: 1.39 ft at 4:00PM Jul 26, 2014Observed: 1.39 ft at 4:15PM Jul 26, 2014Observed: 1.38 ft at 4:30PM Jul 26, 2014Observed: 1.38 ft at 4:45PM Jul 26, 2014Observed: 1.38 ft at 5:00PM Jul 26, 2014Observed: 1.38 ft at 5:15PM Jul 26, 2014Observed: 1.38 ft at 5:30PM Jul 26, 2014Observed: 1.38 ft at 5:45PM Jul 26, 2014Observed: 1.38 ft at 6:00PM Jul 26, 2014Observed: 1.38 ft at 6:15PM Jul 26, 2014Observed: 1.38 ft at 6:30PM Jul 26, 2014Observed: 1.38 ft at 6:45PM Jul 26, 2014Observed: 1.38 ft at 7:00PM Jul 26, 2014Observed: 1.37 ft at 7:15PM Jul 26, 2014Observed: 1.37 ft at 7:30PM Jul 26, 2014Observed: 1.37 ft at 7:45PM Jul 26, 2014Observed: 1.37 ft at 8:00PM Jul 26, 2014Observed: 1.37 ft at 8:15PM Jul 26, 2014Observed: 1.37 ft at 8:30PM Jul 26, 2014Observed: 1.36 ft at 8:45PM Jul 26, 2014Observed: 1.36 ft at 9:00PM Jul 26, 2014Observed: 1.36 ft at 9:15PM Jul 26, 2014Observed: 1.36 ft at 9:30PM Jul 26, 2014Observed: 1.36 ft at 9:45PM Jul 26, 2014Observed: 1.36 ft at 10:00PM Jul 26, 2014Observed: 1.36 ft at 10:15PM Jul 26, 2014Observed: 1.36 ft at 10:30PM Jul 26, 2014Observed: 1.36 ft at 10:45PM Jul 26, 2014Observed: 1.35 ft at 11:00PM Jul 26, 2014Observed: 1.35 ft at 11:15PM Jul 26, 2014Observed: 1.35 ft at 11:30PM Jul 26, 2014Observed: 1.35 ft at 11:45PM Jul 26, 2014Observed: 1.35 ft at 12:00AM Jul 27, 2014Observed: 1.35 ft at 12:15AM Jul 27, 2014Observed: 1.35 ft at 12:30AM Jul 27, 2014Observed: 1.35 ft at 12:45AM Jul 27, 2014Observed: 1.35 ft at 1:00AM Jul 27, 2014Observed: 1.35 ft at 1:15AM Jul 27, 2014Observed: 1.35 ft at 1:30AM Jul 27, 2014Observed: 1.35 ft at 1:45AM Jul 27, 2014Observed: 1.35 ft at 2:00AM Jul 27, 2014Observed: 1.35 ft at 2:15AM Jul 27, 2014Observed: 1.35 ft at 2:30AM Jul 27, 2014Observed: 1.35 ft at 2:45AM Jul 27, 2014Observed: 1.35 ft at 3:00AM Jul 27, 2014Observed: 1.35 ft at 3:15AM Jul 27, 2014Observed: 1.35 ft at 3:30AM Jul 27, 2014Observed: 1.35 ft at 3:45AM Jul 27, 2014Observed: 1.34 ft at 4:00AM Jul 27, 2014Observed: 1.34 ft at 4:15AM Jul 27, 2014Observed: 1.34 ft at 4:30AM Jul 27, 2014Observed: 1.34 ft at 4:45AM Jul 27, 2014Observed: 1.34 ft at 5:00AM Jul 27, 2014Observed: 1.34 ft at 5:15AM Jul 27, 2014Observed: 1.34 ft at 5:30AM Jul 27, 2014Observed: 1.34 ft at 5:45AM Jul 27, 2014Observed: 1.34 ft at 6:00AM Jul 27, 2014Observed: 1.34 ft at 6:15AM Jul 27, 2014Observed: 1.34 ft at 6:30AM Jul 27, 2014Observed: 1.34 ft at 6:45AM Jul 27, 2014Observed: 1.34 ft at 7:00AM Jul 27, 2014Observed: 1.34 ft at 7:15AM Jul 27, 2014Observed: 1.34 ft at 7:30AM Jul 27, 2014Observed: 1.35 ft at 7:45AM Jul 27, 2014Observed: 1.34 ft at 8:00AM Jul 27, 2014Observed: 1.34 ft at 8:15AM Jul 27, 2014Observed: 1.34 ft at 8:30AM Jul 27, 2014Observed: 1.34 ft at 8:45AM Jul 27, 2014Observed: 1.34 ft at 9:00AM Jul 27, 2014Observed: 1.34 ft at 9:15AM Jul 27, 2014Observed: 1.34 ft at 9:30AM Jul 27, 2014Observed: 1.34 ft at 9:45AM Jul 27, 2014Observed: 1.34 ft at 10:00AM Jul 27, 2014Observed: 1.34 ft at 10:15AM Jul 27, 2014Observed: 1.34 ft at 10:30AM Jul 27, 2014Observed: 1.34 ft at 10:45AM Jul 27, 2014Observed: 1.34 ft at 11:00AM Jul 27, 2014Observed: 1.35 ft at 11:15AM Jul 27, 2014Observed: 1.35 ft at 11:30AM Jul 27, 2014Observed: 1.36 ft at 11:45AM Jul 27, 2014Observed: 1.38 ft at 12:00PM Jul 27, 2014Observed: 1.39 ft at 12:15PM Jul 27, 2014Observed: 1.39 ft at 12:30PM Jul 27, 2014Observed: 1.38 ft at 12:45PM Jul 27, 2014Observed: 1.38 ft at 1:00PM Jul 27, 2014Observed: 1.41 ft at 1:15PM Jul 27, 2014Observed: 1.5 ft at 1:30PM Jul 27, 2014Highest Observation: 1.86 ft at 1:45PM Jul 27, 2014Observed: 1.85 ft at 2:00PM Jul 27, 2014Observed: 1.74 ft at 2:15PM Jul 27, 2014Observed: 1.65 ft at 2:30PM Jul 27, 2014Observed: 1.62 ft at 2:45PM Jul 27, 2014Observed: 1.62 ft at 3:00PM Jul 27, 2014Observed: 1.62 ft at 3:15PM Jul 27, 2014Observed: 1.62 ft at 3:30PM Jul 27, 2014Observed: 1.63 ft at 3:45PM Jul 27, 2014Observed: 1.63 ft at 4:00PM Jul 27, 2014Observed: 1.64 ft at 4:15PM Jul 27, 2014Observed: 1.64 ft at 4:30PM Jul 27, 2014Observed: 1.65 ft at 4:45PM Jul 27, 2014Observed: 1.65 ft at 5:00PM Jul 27, 2014Observed: 1.65 ft at 5:15PM Jul 27, 2014Observed: 1.66 ft at 5:30PM Jul 27, 2014Observed: 1.66 ft at 5:45PM Jul 27, 2014Observed: 1.67 ft at 6:00PM Jul 27, 2014Observed: 1.67 ft at 6:15PM Jul 27, 2014Observed: 1.67 ft at 6:30PM Jul 27, 2014Observed: 1.67 ft at 6:45PM Jul 27, 2014Observed: 1.67 ft at 7:00PM Jul 27, 2014Observed: 1.68 ft at 7:15PM Jul 27, 2014Observed: 1.68 ft at 7:30PM Jul 27, 2014Observed: 1.68 ft at 7:45PM Jul 27, 2014Observed: 1.69 ft at 8:00PM Jul 27, 2014Observed: 1.69 ft at 8:15PM Jul 27, 2014Observed: 1.7 ft at 8:30PM Jul 27, 2014Observed: 1.7 ft at 8:45PM Jul 27, 2014Observed: 1.71 ft at 9:00PM Jul 27, 2014Observed: 1.72 ft at 9:15PM Jul 27, 2014Observed: 1.73 ft at 9:30PM Jul 27, 2014Observed: 1.73 ft at 9:45PM Jul 27, 2014Observed: 1.74 ft at 10:00PM Jul 27, 2014Observed: 1.75 ft at 10:15PM Jul 27, 2014Observed: 1.76 ft at 10:30PM Jul 27, 2014Observed: 1.77 ft at 10:45PM Jul 27, 2014Observed: 1.77 ft at 11:00PM Jul 27, 2014Observed: 1.78 ft at 11:15PM Jul 27, 2014Observed: 1.78 ft at 11:30PM Jul 27, 2014Observed: 1.78 ft at 11:45PM Jul 27, 2014Observed: 1.79 ft at 12:00AM Jul 28, 2014Observed: 1.79 ft at 12:15AM Jul 28, 2014Observed: 1.79 ft at 12:30AM Jul 28, 2014Observed: 1.8 ft at 12:45AM Jul 28, 2014Observed: 1.8 ft at 1:00AM Jul 28, 2014Observed: 1.8 ft at 1:15AM Jul 28, 2014Forecast: 1.5 ft 8:00AM Jul 28, 2014Forecast: 1.6 ft 2:00PM Jul 28, 2014Highest Forecast: 1.7 ft 8:00PM Jul 28, 2014Highest Forecast: 1.7 ft 2:00AM Jul 29, 2014Highest Forecast: 1.7 ft 8:00AM Jul 29, 2014Highest Forecast: 1.7 ft 2:00PM Jul 29, 2014Highest Forecast: 1.7 ft 8:00PM Jul 29, 2014Forecast: 1.6 ft 2:00AM Jul 30, 2014Forecast: 1.6 ft 8:00AM Jul 30, 2014USGS--Water Resources of the United StatesMAYM3(plotting HGIRG) Graph Created (2:15AM Jul 28, 2014)ObservedForecast (issued 10:51AM Jul 27)Latest observed value: 1.8 ft at 1:15 AM EDT 28-Jul-2014. Flood Stage is 5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Assabet River at Maynard are issued routinely year-round.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage:7
Moderate Flood Stage:6
Flood Stage:5
Action Stage:4.5

Historical Crests
(1) 8.94 ft on 08/20/1955
(2) 8.15 ft on 03/19/1968
(3) 8.11 ft on 01/26/1979
(4) 7.17 ft on 04/07/1987
(5) 7.14 ft on 03/16/2010
Show More Historical Crests

(P): Preliminary values subject to further review.

Low Water Records
Zoom Level:16
KML Image
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
7 SIGNIFICANT FLOODING WILL AFFECT INTERESTS ALONG THE RIVER IN MAYNARD...CONCORD AND HUDSON. ROADWAYS MAY BECOME IMPASSABLE DUE TO FLOOD WATERS AND SOME PROPERTIES MAY NEED TO BE EVACUATED. FOLLOW THE DIRECTIONS OF LOCAL EMERGENCY MANAGEMENT OFFICIALS.
6 FLOODING IS LIKELY IN LOW LYING SECTIONS ALONG THE RIVER INCLUDING PORTIONS OF MAYNARD...HUDSON AND CONCORD. WATER MAY APPROACH HOMES ALONG THE RIVER AND MAY FORCE SEVERAL LOCALIZED ROAD CLOSURES.
5 MINOR LOWLAND AND BACKYARD FLOODING IS LIKELY ALONG REACHES OF THE RIVER IN MAYNARD...CONCORD AS WELL AS HUDSON. SEVERAL RIVER ROADS MAY ALSO BECOME COVERED IN WATER.
About This Location Collapse

Latitude: 42.431944° N, Longitude: 71.450278° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 5 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: 16-Jul-2014 12:48 AM
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