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Hydrograph River at a Glance Download
Assabet River at Maynard Stage (ft)Flow (kcfs)Highest Observation: 3.53 ft at 10:45AM Apr 18, 2014Observed: 3.52 ft at 11:00AM Apr 18, 2014Observed: 3.51 ft at 11:15AM Apr 18, 2014Observed: 3.51 ft at 11:30AM Apr 18, 2014Observed: 3.51 ft at 11:45AM Apr 18, 2014Observed: 3.51 ft at 12:00PM Apr 18, 2014Observed: 3.5 ft at 12:15PM Apr 18, 2014Observed: 3.5 ft at 12:30PM Apr 18, 2014Observed: 3.49 ft at 12:45PM Apr 18, 2014Observed: 3.51 ft at 1:00PM Apr 18, 2014Observed: 3.51 ft at 1:15PM Apr 18, 2014Observed: 3.5 ft at 1:30PM Apr 18, 2014Observed: 3.49 ft at 1:45PM Apr 18, 2014Observed: 3.5 ft at 2:00PM Apr 18, 2014Observed: 3.5 ft at 2:15PM Apr 18, 2014Observed: 3.5 ft at 2:30PM Apr 18, 2014Observed: 3.49 ft at 2:45PM Apr 18, 2014Observed: 3.48 ft at 3:00PM Apr 18, 2014Observed: 3.48 ft at 3:15PM Apr 18, 2014Observed: 3.49 ft at 3:30PM Apr 18, 2014Observed: 3.49 ft at 3:45PM Apr 18, 2014Observed: 3.47 ft at 4:00PM Apr 18, 2014Observed: 3.49 ft at 4:15PM Apr 18, 2014Observed: 3.47 ft at 4:30PM Apr 18, 2014Observed: 3.47 ft at 4:45PM Apr 18, 2014Observed: 3.46 ft at 5:00PM Apr 18, 2014Observed: 3.45 ft at 5:15PM Apr 18, 2014Observed: 3.46 ft at 5:30PM Apr 18, 2014Observed: 3.45 ft at 5:45PM Apr 18, 2014Observed: 3.45 ft at 6:00PM Apr 18, 2014Observed: 3.44 ft at 6:15PM Apr 18, 2014Observed: 3.45 ft at 6:30PM Apr 18, 2014Observed: 3.45 ft at 6:45PM Apr 18, 2014Observed: 3.43 ft at 7:00PM Apr 18, 2014Observed: 3.43 ft at 7:15PM Apr 18, 2014Observed: 3.43 ft at 7:30PM Apr 18, 2014Observed: 3.43 ft at 7:45PM Apr 18, 2014Observed: 3.42 ft at 8:00PM Apr 18, 2014Observed: 3.42 ft at 8:15PM Apr 18, 2014Observed: 3.42 ft at 8:30PM Apr 18, 2014Observed: 3.41 ft at 8:45PM Apr 18, 2014Observed: 3.4 ft at 9:00PM Apr 18, 2014Observed: 3.4 ft at 9:15PM Apr 18, 2014Observed: 3.41 ft at 9:30PM Apr 18, 2014Observed: 3.4 ft at 9:45PM Apr 18, 2014Observed: 3.4 ft at 10:00PM Apr 18, 2014Observed: 3.4 ft at 10:15PM Apr 18, 2014Observed: 3.4 ft at 10:30PM Apr 18, 2014Observed: 3.4 ft at 10:45PM Apr 18, 2014Observed: 3.38 ft at 11:00PM Apr 18, 2014Observed: 3.39 ft at 11:15PM Apr 18, 2014Observed: 3.39 ft at 11:30PM Apr 18, 2014Observed: 3.39 ft at 11:45PM Apr 18, 2014Observed: 3.37 ft at 12:00AM Apr 19, 2014Observed: 3.37 ft at 12:15AM Apr 19, 2014Observed: 3.38 ft at 12:30AM Apr 19, 2014Observed: 3.37 ft at 12:45AM Apr 19, 2014Observed: 3.37 ft at 1:00AM Apr 19, 2014Observed: 3.37 ft at 1:15AM Apr 19, 2014Observed: 3.36 ft at 1:30AM Apr 19, 2014Observed: 3.36 ft at 1:45AM Apr 19, 2014Observed: 3.35 ft at 2:00AM Apr 19, 2014Observed: 3.35 ft at 2:15AM Apr 19, 2014Observed: 3.35 ft at 2:30AM Apr 19, 2014Observed: 3.35 ft at 2:45AM Apr 19, 2014Observed: 3.34 ft at 3:00AM Apr 19, 2014Observed: 3.35 ft at 3:15AM Apr 19, 2014Observed: 3.34 ft at 3:30AM Apr 19, 2014Observed: 3.34 ft at 3:45AM Apr 19, 2014Observed: 3.33 ft at 4:00AM Apr 19, 2014Observed: 3.33 ft at 4:15AM Apr 19, 2014Observed: 3.33 ft at 4:30AM Apr 19, 2014Observed: 3.33 ft at 4:45AM Apr 19, 2014Observed: 3.32 ft at 5:00AM Apr 19, 2014Observed: 3.32 ft at 5:15AM Apr 19, 2014Observed: 3.31 ft at 5:30AM Apr 19, 2014Observed: 3.31 ft at 5:45AM Apr 19, 2014Observed: 3.31 ft at 6:00AM Apr 19, 2014Observed: 3.3 ft at 6:15AM Apr 19, 2014Observed: 3.3 ft at 6:30AM Apr 19, 2014Observed: 3.3 ft at 6:45AM Apr 19, 2014Observed: 3.3 ft at 7:00AM Apr 19, 2014Observed: 3.29 ft at 7:15AM Apr 19, 2014Observed: 3.29 ft at 7:30AM Apr 19, 2014Observed: 3.28 ft at 7:45AM Apr 19, 2014Observed: 3.3 ft at 8:00AM Apr 19, 2014Observed: 3.29 ft at 8:15AM Apr 19, 2014Observed: 3.29 ft at 8:30AM Apr 19, 2014Observed: 3.29 ft at 8:45AM Apr 19, 2014Observed: 3.29 ft at 9:00AM Apr 19, 2014Observed: 3.29 ft at 9:15AM Apr 19, 2014Observed: 3.28 ft at 9:30AM Apr 19, 2014Observed: 3.29 ft at 9:45AM Apr 19, 2014Observed: 3.27 ft at 10:00AM Apr 19, 2014Observed: 3.28 ft at 10:15AM Apr 19, 2014Observed: 3.28 ft at 10:30AM Apr 19, 2014Observed: 3.27 ft at 10:45AM Apr 19, 2014Observed: 3.26 ft at 11:00AM Apr 19, 2014Observed: 3.26 ft at 11:15AM Apr 19, 2014Observed: 3.26 ft at 11:30AM Apr 19, 2014Observed: 3.26 ft at 11:45AM Apr 19, 2014Observed: 3.25 ft at 12:00PM Apr 19, 2014Observed: 3.24 ft at 12:15PM Apr 19, 2014Observed: 3.24 ft at 12:30PM Apr 19, 2014Observed: 3.25 ft at 12:45PM Apr 19, 2014Observed: 3.24 ft at 1:00PM Apr 19, 2014Observed: 3.24 ft at 1:15PM Apr 19, 2014Observed: 3.23 ft at 1:30PM Apr 19, 2014Observed: 3.23 ft at 1:45PM Apr 19, 2014Observed: 3.24 ft at 2:00PM Apr 19, 2014Observed: 3.25 ft at 2:15PM Apr 19, 2014Observed: 3.23 ft at 2:30PM Apr 19, 2014Observed: 3.23 ft at 2:45PM Apr 19, 2014Observed: 3.23 ft at 3:00PM Apr 19, 2014Observed: 3.22 ft at 3:15PM Apr 19, 2014Observed: 3.22 ft at 3:30PM Apr 19, 2014Observed: 3.22 ft at 3:45PM Apr 19, 2014Observed: 3.22 ft at 4:00PM Apr 19, 2014Observed: 3.23 ft at 4:15PM Apr 19, 2014Observed: 3.21 ft at 4:30PM Apr 19, 2014Observed: 3.21 ft at 4:45PM Apr 19, 2014Observed: 3.22 ft at 5:00PM Apr 19, 2014Observed: 3.24 ft at 5:15PM Apr 19, 2014Observed: 3.21 ft at 5:30PM Apr 19, 2014Observed: 3.21 ft at 5:45PM Apr 19, 2014Observed: 3.21 ft at 6:00PM Apr 19, 2014Observed: 3.2 ft at 6:15PM Apr 19, 2014Observed: 3.2 ft at 6:30PM Apr 19, 2014Observed: 3.2 ft at 6:45PM Apr 19, 2014Observed: 3.2 ft at 7:00PM Apr 19, 2014Observed: 3.21 ft at 7:15PM Apr 19, 2014Observed: 3.21 ft at 7:30PM Apr 19, 2014Observed: 3.2 ft at 7:45PM Apr 19, 2014Observed: 3.2 ft at 8:00PM Apr 19, 2014Observed: 3.18 ft at 8:15PM Apr 19, 2014Observed: 3.18 ft at 8:30PM Apr 19, 2014Observed: 3.18 ft at 8:45PM Apr 19, 2014Observed: 3.18 ft at 9:00PM Apr 19, 2014Observed: 3.18 ft at 9:15PM Apr 19, 2014Observed: 3.18 ft at 9:30PM Apr 19, 2014Observed: 3.17 ft at 9:45PM Apr 19, 2014Observed: 3.17 ft at 10:00PM Apr 19, 2014Observed: 3.17 ft at 10:15PM Apr 19, 2014Observed: 3.17 ft at 10:30PM Apr 19, 2014Observed: 3.18 ft at 10:45PM Apr 19, 2014Observed: 3.17 ft at 11:00PM Apr 19, 2014Observed: 3.17 ft at 11:15PM Apr 19, 2014Observed: 3.18 ft at 11:30PM Apr 19, 2014Observed: 3.18 ft at 11:45PM Apr 19, 2014Observed: 3.18 ft at 12:00AM Apr 20, 2014Observed: 3.18 ft at 12:15AM Apr 20, 2014Observed: 3.18 ft at 12:30AM Apr 20, 2014Observed: 3.18 ft at 12:45AM Apr 20, 2014Observed: 3.18 ft at 1:00AM Apr 20, 2014Observed: 3.17 ft at 1:15AM Apr 20, 2014Observed: 3.16 ft at 1:30AM Apr 20, 2014Observed: 3.17 ft at 1:45AM Apr 20, 2014Observed: 3.17 ft at 2:00AM Apr 20, 2014Observed: 3.17 ft at 2:15AM Apr 20, 2014Observed: 3.17 ft at 2:30AM Apr 20, 2014Observed: 3.17 ft at 2:45AM Apr 20, 2014Observed: 3.17 ft at 3:00AM Apr 20, 2014Observed: 3.16 ft at 3:15AM Apr 20, 2014Observed: 3.16 ft at 3:30AM Apr 20, 2014Observed: 3.16 ft at 3:45AM Apr 20, 2014Observed: 3.15 ft at 4:00AM Apr 20, 2014Observed: 3.16 ft at 4:15AM Apr 20, 2014Observed: 3.15 ft at 4:30AM Apr 20, 2014Observed: 3.16 ft at 4:45AM Apr 20, 2014Observed: 3.15 ft at 5:00AM Apr 20, 2014Observed: 3.15 ft at 5:15AM Apr 20, 2014Observed: 3.15 ft at 5:30AM Apr 20, 2014Observed: 3.15 ft at 5:45AM Apr 20, 2014Observed: 3.14 ft at 6:00AM Apr 20, 2014Observed: 3.14 ft at 6:15AM Apr 20, 2014Observed: 3.14 ft at 6:30AM Apr 20, 2014Observed: 3.14 ft at 6:45AM Apr 20, 2014Observed: 3.14 ft at 7:00AM Apr 20, 2014Observed: 3.13 ft at 7:15AM Apr 20, 2014Observed: 3.13 ft at 7:30AM Apr 20, 2014Observed: 3.13 ft at 7:45AM Apr 20, 2014Observed: 3.13 ft at 8:00AM Apr 20, 2014Observed: 3.13 ft at 8:15AM Apr 20, 2014Observed: 3.12 ft at 8:30AM Apr 20, 2014Observed: 3.1 ft at 8:45AM Apr 20, 2014Observed: 3.11 ft at 9:00AM Apr 20, 2014Observed: 3.1 ft at 9:15AM Apr 20, 2014Observed: 3.1 ft at 9:30AM Apr 20, 2014Observed: 3.1 ft at 9:45AM Apr 20, 2014Observed: 3.1 ft at 10:00AM Apr 20, 2014Observed: 3.09 ft at 10:15AM Apr 20, 2014Observed: 3.1 ft at 10:30AM Apr 20, 2014Observed: 3.08 ft at 10:45AM Apr 20, 2014Observed: 3.09 ft at 11:00AM Apr 20, 2014Observed: 3.09 ft at 11:15AM Apr 20, 2014Observed: 3.09 ft at 11:30AM Apr 20, 2014Observed: 3.09 ft at 11:45AM Apr 20, 2014Observed: 3.09 ft at 12:00PM Apr 20, 2014Observed: 3.08 ft at 12:15PM Apr 20, 2014Observed: 3.09 ft at 12:30PM Apr 20, 2014Observed: 3.08 ft at 12:45PM Apr 20, 2014Observed: 3.09 ft at 1:00PM Apr 20, 2014Observed: 3.09 ft at 1:15PM Apr 20, 2014Observed: 3.09 ft at 1:30PM Apr 20, 2014Observed: 3.08 ft at 1:45PM Apr 20, 2014Observed: 3.09 ft at 2:00PM Apr 20, 2014Observed: 3.09 ft at 2:15PM Apr 20, 2014Observed: 3.09 ft at 2:30PM Apr 20, 2014Observed: 3.09 ft at 2:45PM Apr 20, 2014Observed: 3.08 ft at 3:00PM Apr 20, 2014Observed: 3.08 ft at 3:15PM Apr 20, 2014Observed: 3.08 ft at 3:30PM Apr 20, 2014Observed: 3.07 ft at 3:45PM Apr 20, 2014Observed: 3.08 ft at 4:00PM Apr 20, 2014Observed: 3.06 ft at 4:15PM Apr 20, 2014Observed: 3.07 ft at 4:30PM Apr 20, 2014Observed: 3.06 ft at 4:45PM Apr 20, 2014Observed: 3.06 ft at 5:00PM Apr 20, 2014Observed: 3.06 ft at 5:15PM Apr 20, 2014Observed: 3.05 ft at 5:30PM Apr 20, 2014Observed: 3.05 ft at 5:45PM Apr 20, 2014Observed: 3.05 ft at 6:00PM Apr 20, 2014Observed: 3.05 ft at 6:15PM Apr 20, 2014Observed: 3.05 ft at 6:30PM Apr 20, 2014Observed: 3.05 ft at 6:45PM Apr 20, 2014Observed: 3.05 ft at 7:00PM Apr 20, 2014Observed: 3.04 ft at 7:15PM Apr 20, 2014Observed: 3.04 ft at 7:30PM Apr 20, 2014Observed: 3.04 ft at 7:45PM Apr 20, 2014Observed: 3.04 ft at 8:00PM Apr 20, 2014Observed: 3.04 ft at 8:15PM Apr 20, 2014Observed: 3.04 ft at 8:30PM Apr 20, 2014Observed: 3.04 ft at 8:45PM Apr 20, 2014Observed: 3.03 ft at 9:00PM Apr 20, 2014Observed: 3.03 ft at 9:15PM Apr 20, 2014Observed: 3.02 ft at 9:30PM Apr 20, 2014Observed: 3.03 ft at 9:45PM Apr 20, 2014Observed: 3.03 ft at 10:00PM Apr 20, 2014Observed: 3.03 ft at 10:15PM Apr 20, 2014Observed: 3.02 ft at 10:30PM Apr 20, 2014Observed: 3.02 ft at 10:45PM Apr 20, 2014Observed: 3.02 ft at 11:00PM Apr 20, 2014Observed: 3.02 ft at 11:15PM Apr 20, 2014Observed: 3.02 ft at 11:30PM Apr 20, 2014Observed: 3.02 ft at 11:45PM Apr 20, 2014Observed: 3.02 ft at 12:00AM Apr 21, 2014Observed: 3.02 ft at 12:15AM Apr 21, 2014Observed: 3.02 ft at 12:30AM Apr 21, 2014Observed: 3.01 ft at 12:45AM Apr 21, 2014Observed: 3.01 ft at 1:00AM Apr 21, 2014Observed: 3 ft at 1:15AM Apr 21, 2014Observed: 3.01 ft at 1:30AM Apr 21, 2014Observed: 3 ft at 1:45AM Apr 21, 2014Observed: 3 ft at 2:00AM Apr 21, 2014Observed: 3 ft at 2:15AM Apr 21, 2014Observed: 3 ft at 2:30AM Apr 21, 2014Observed: 3 ft at 2:45AM Apr 21, 2014Observed: 3 ft at 3:00AM Apr 21, 2014Observed: 3 ft at 3:15AM Apr 21, 2014Observed: 2.99 ft at 3:30AM Apr 21, 2014Observed: 3 ft at 3:45AM Apr 21, 2014Observed: 2.99 ft at 4:00AM Apr 21, 2014Observed: 3 ft at 4:15AM Apr 21, 2014Observed: 2.99 ft at 4:30AM Apr 21, 2014Observed: 2.98 ft at 4:45AM Apr 21, 2014Observed: 2.98 ft at 5:00AM Apr 21, 2014Observed: 2.99 ft at 5:15AM Apr 21, 2014Observed: 2.98 ft at 5:30AM Apr 21, 2014Observed: 2.98 ft at 5:45AM Apr 21, 2014Observed: 2.98 ft at 6:00AM Apr 21, 2014Observed: 2.98 ft at 6:15AM Apr 21, 2014Observed: 2.97 ft at 6:30AM Apr 21, 2014Observed: 2.97 ft at 6:45AM Apr 21, 2014Observed: 2.98 ft at 7:00AM Apr 21, 2014Observed: 2.98 ft at 7:15AM Apr 21, 2014Observed: 2.96 ft at 7:30AM Apr 21, 2014Observed: 2.97 ft at 7:45AM Apr 21, 2014Observed: 2.96 ft at 8:00AM Apr 21, 2014Observed: 2.96 ft at 8:15AM Apr 21, 2014Observed: 2.96 ft at 8:30AM Apr 21, 2014Observed: 2.97 ft at 8:45AM Apr 21, 2014Observed: 2.96 ft at 9:00AM Apr 21, 2014Observed: 2.96 ft at 9:15AM Apr 21, 2014Highest Forecast: 3 ft 2:00PM Apr 21, 2014Forecast: 2.9 ft 8:00PM Apr 21, 2014Forecast: 2.9 ft 2:00AM Apr 22, 2014Forecast: 2.9 ft 8:00AM Apr 22, 2014Forecast: 2.9 ft 2:00PM Apr 22, 2014Forecast: 2.8 ft 8:00PM Apr 22, 2014Forecast: 2.8 ft 2:00AM Apr 23, 2014Forecast: 2.8 ft 8:00AM Apr 23, 2014USGS--Water Resources of the United StatesMAYM3(plotting HGIRG) Graph Created (10:30AM Apr 21, 2014)ObservedForecast (issued 10:38AM Apr 20)Latest observed value: 2.96 ft at 9:15 AM EDT 21-Apr-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: Gauge reading may be affected by ice.

NOTE: Forecasts for the Assabet River at Maynard are issued routinely year-round.

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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

Low Water Records
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
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: 8-Apr-2014 8:36 AM
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