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Hydrograph River at a Glance Download
North Nashua River at Fitchburg Stage (ft)Flow (kcfs)Observed: 3.41 ft at 3:30AM Mar 21, 2023Observed: 3.42 ft at 3:45AM Mar 21, 2023Observed: 3.42 ft at 4:00AM Mar 21, 2023Observed: 3.41 ft at 4:15AM Mar 21, 2023Observed: 3.41 ft at 4:30AM Mar 21, 2023Observed: 3.41 ft at 4:45AM Mar 21, 2023Observed: 3.41 ft at 5:00AM Mar 21, 2023Observed: 3.41 ft at 5:15AM Mar 21, 2023Observed: 3.41 ft at 5:30AM Mar 21, 2023Observed: 3.4 ft at 5:45AM Mar 21, 2023Observed: 3.4 ft at 6:00AM Mar 21, 2023Observed: 3.4 ft at 6:15AM Mar 21, 2023Observed: 3.4 ft at 6:30AM Mar 21, 2023Observed: 3.39 ft at 6:45AM Mar 21, 2023Observed: 3.4 ft at 7:00AM Mar 21, 2023Observed: 3.4 ft at 7:15AM Mar 21, 2023Observed: 3.39 ft at 7:30AM Mar 21, 2023Observed: 3.4 ft at 7:45AM Mar 21, 2023Observed: 3.39 ft at 8:00AM Mar 21, 2023Observed: 3.39 ft at 8:15AM Mar 21, 2023Observed: 3.39 ft at 8:30AM Mar 21, 2023Observed: 3.39 ft at 8:45AM Mar 21, 2023Observed: 3.39 ft at 9:00AM Mar 21, 2023Observed: 3.39 ft at 9:15AM Mar 21, 2023Observed: 3.39 ft at 9:30AM Mar 21, 2023Observed: 3.38 ft at 9:45AM Mar 21, 2023Observed: 3.39 ft at 10:00AM Mar 21, 2023Observed: 3.38 ft at 10:15AM Mar 21, 2023Observed: 3.38 ft at 10:30AM Mar 21, 2023Observed: 3.38 ft at 10:45AM Mar 21, 2023Observed: 3.38 ft at 11:00AM Mar 21, 2023Observed: 3.38 ft at 11:15AM Mar 21, 2023Observed: 3.38 ft at 11:30AM Mar 21, 2023Observed: 3.38 ft at 11:45AM Mar 21, 2023Observed: 3.39 ft at 12:00PM Mar 21, 2023Observed: 3.38 ft at 12:15PM Mar 21, 2023Observed: 3.39 ft at 12:30PM Mar 21, 2023Observed: 3.39 ft at 12:45PM Mar 21, 2023Observed: 3.39 ft at 1:00PM Mar 21, 2023Observed: 3.39 ft at 1:15PM Mar 21, 2023Observed: 3.39 ft at 1:30PM Mar 21, 2023Observed: 3.39 ft at 1:45PM Mar 21, 2023Observed: 3.39 ft at 2:00PM Mar 21, 2023Observed: 3.39 ft at 2:15PM Mar 21, 2023Observed: 3.4 ft at 2:30PM Mar 21, 2023Observed: 3.4 ft at 2:45PM Mar 21, 2023Observed: 3.4 ft at 3:00PM Mar 21, 2023Observed: 3.41 ft at 3:15PM Mar 21, 2023Observed: 3.42 ft at 3:30PM Mar 21, 2023Observed: 3.42 ft at 3:45PM Mar 21, 2023Observed: 3.42 ft at 4:00PM Mar 21, 2023Observed: 3.42 ft at 4:15PM Mar 21, 2023Observed: 3.43 ft at 4:30PM Mar 21, 2023Observed: 3.45 ft at 4:45PM Mar 21, 2023Observed: 3.44 ft at 5:00PM Mar 21, 2023Observed: 3.46 ft at 5:15PM Mar 21, 2023Observed: 3.45 ft at 5:30PM Mar 21, 2023Observed: 3.46 ft at 5:45PM Mar 21, 2023Observed: 3.46 ft at 6:00PM Mar 21, 2023Observed: 3.48 ft at 6:15PM Mar 21, 2023Observed: 3.48 ft at 6:30PM Mar 21, 2023Observed: 3.49 ft at 6:45PM Mar 21, 2023Observed: 3.5 ft at 7:00PM Mar 21, 2023Observed: 3.51 ft at 7:15PM Mar 21, 2023Observed: 3.52 ft at 7:30PM Mar 21, 2023Observed: 3.52 ft at 7:45PM Mar 21, 2023Observed: 3.52 ft at 8:00PM Mar 21, 2023Observed: 3.53 ft at 8:15PM Mar 21, 2023Observed: 3.53 ft at 8:30PM Mar 21, 2023Observed: 3.54 ft at 8:45PM Mar 21, 2023Observed: 3.55 ft at 9:00PM Mar 21, 2023Observed: 3.55 ft at 9:15PM Mar 21, 2023Observed: 3.56 ft at 9:30PM Mar 21, 2023Observed: 3.56 ft at 9:45PM Mar 21, 2023Observed: 3.57 ft at 10:00PM Mar 21, 2023Observed: 3.56 ft at 10:15PM Mar 21, 2023Observed: 3.57 ft at 10:30PM Mar 21, 2023Observed: 3.56 ft at 10:45PM Mar 21, 2023Observed: 3.57 ft at 11:00PM Mar 21, 2023Observed: 3.57 ft at 11:15PM Mar 21, 2023Observed: 3.57 ft at 11:30PM Mar 21, 2023Observed: 3.56 ft at 11:45PM Mar 21, 2023Observed: 3.57 ft at 12:00AM Mar 22, 2023Observed: 3.58 ft at 12:15AM Mar 22, 2023Observed: 3.57 ft at 12:30AM Mar 22, 2023Observed: 3.56 ft at 12:45AM Mar 22, 2023Observed: 3.57 ft at 1:00AM Mar 22, 2023Observed: 3.57 ft at 1:15AM Mar 22, 2023Observed: 3.57 ft at 1:30AM Mar 22, 2023Observed: 3.57 ft at 1:45AM Mar 22, 2023Observed: 3.56 ft at 2:00AM Mar 22, 2023Observed: 3.56 ft at 2:15AM Mar 22, 2023Observed: 3.58 ft at 2:30AM Mar 22, 2023Observed: 3.57 ft at 2:45AM Mar 22, 2023Observed: 3.56 ft at 3:00AM Mar 22, 2023Observed: 3.57 ft at 3:15AM Mar 22, 2023Observed: 3.55 ft at 3:30AM Mar 22, 2023Observed: 3.56 ft at 3:45AM Mar 22, 2023Observed: 3.56 ft at 4:00AM Mar 22, 2023Observed: 3.55 ft at 4:15AM Mar 22, 2023Observed: 3.56 ft at 4:30AM Mar 22, 2023Observed: 3.56 ft at 4:45AM Mar 22, 2023Observed: 3.55 ft at 5:00AM Mar 22, 2023Observed: 3.55 ft at 5:15AM Mar 22, 2023Observed: 3.55 ft at 5:30AM Mar 22, 2023Observed: 3.54 ft at 5:45AM Mar 22, 2023Observed: 3.54 ft at 6:00AM Mar 22, 2023Observed: 3.55 ft at 6:15AM Mar 22, 2023Observed: 3.53 ft at 6:30AM Mar 22, 2023Observed: 3.53 ft at 6:45AM Mar 22, 2023Observed: 3.54 ft at 7:00AM Mar 22, 2023Observed: 3.53 ft at 7:15AM Mar 22, 2023Observed: 3.53 ft at 7:30AM Mar 22, 2023Observed: 3.53 ft at 7:45AM Mar 22, 2023Observed: 3.53 ft at 8:00AM Mar 22, 2023Observed: 3.52 ft at 8:15AM Mar 22, 2023Observed: 3.52 ft at 8:30AM Mar 22, 2023Observed: 3.51 ft at 8:45AM Mar 22, 2023Observed: 3.51 ft at 9:00AM Mar 22, 2023Observed: 3.52 ft at 9:15AM Mar 22, 2023Observed: 3.52 ft at 9:30AM Mar 22, 2023Observed: 3.52 ft at 9:45AM Mar 22, 2023Observed: 3.51 ft at 10:00AM Mar 22, 2023Observed: 3.51 ft at 10:15AM Mar 22, 2023Observed: 3.51 ft at 10:30AM Mar 22, 2023Observed: 3.5 ft at 10:45AM Mar 22, 2023Observed: 3.51 ft at 11:00AM Mar 22, 2023Observed: 3.5 ft at 11:15AM Mar 22, 2023Observed: 3.51 ft at 11:30AM Mar 22, 2023Observed: 3.5 ft at 11:45AM Mar 22, 2023Observed: 3.51 ft at 12:00PM Mar 22, 2023Observed: 3.5 ft at 12:15PM Mar 22, 2023Observed: 3.5 ft at 12:30PM Mar 22, 2023Observed: 3.5 ft at 12:45PM Mar 22, 2023Observed: 3.5 ft at 1:00PM Mar 22, 2023Observed: 3.5 ft at 1:15PM Mar 22, 2023Observed: 3.5 ft at 1:30PM Mar 22, 2023Observed: 3.51 ft at 1:45PM Mar 22, 2023Observed: 3.5 ft at 2:00PM Mar 22, 2023Observed: 3.5 ft at 2:15PM Mar 22, 2023Observed: 3.51 ft at 2:30PM Mar 22, 2023Observed: 3.51 ft at 2:45PM Mar 22, 2023Observed: 3.51 ft at 3:00PM Mar 22, 2023Observed: 3.52 ft at 3:15PM Mar 22, 2023Observed: 3.52 ft at 3:30PM Mar 22, 2023Observed: 3.53 ft at 3:45PM Mar 22, 2023Observed: 3.54 ft at 4:00PM Mar 22, 2023Observed: 3.55 ft at 4:15PM Mar 22, 2023Observed: 3.56 ft at 4:30PM Mar 22, 2023Observed: 3.57 ft at 4:45PM Mar 22, 2023Observed: 3.57 ft at 5:00PM Mar 22, 2023Observed: 3.6 ft at 5:15PM Mar 22, 2023Observed: 3.6 ft at 5:30PM Mar 22, 2023Observed: 3.61 ft at 5:45PM Mar 22, 2023Observed: 3.63 ft at 6:00PM Mar 22, 2023Observed: 3.64 ft at 6:15PM Mar 22, 2023Observed: 3.64 ft at 6:30PM Mar 22, 2023Observed: 3.66 ft at 6:45PM Mar 22, 2023Observed: 3.66 ft at 7:00PM Mar 22, 2023Observed: 3.67 ft at 7:15PM Mar 22, 2023Observed: 3.68 ft at 7:30PM Mar 22, 2023Observed: 3.69 ft at 7:45PM Mar 22, 2023Observed: 3.71 ft at 8:00PM Mar 22, 2023Observed: 3.71 ft at 8:15PM Mar 22, 2023Observed: 3.72 ft at 8:30PM Mar 22, 2023Observed: 3.72 ft at 8:45PM Mar 22, 2023Observed: 3.72 ft at 9:00PM Mar 22, 2023Observed: 3.73 ft at 9:15PM Mar 22, 2023Observed: 3.75 ft at 9:30PM Mar 22, 2023Observed: 3.74 ft at 9:45PM Mar 22, 2023Observed: 3.75 ft at 10:00PM Mar 22, 2023Observed: 3.75 ft at 10:15PM Mar 22, 2023Observed: 3.76 ft at 10:30PM Mar 22, 2023Observed: 3.76 ft at 10:45PM Mar 22, 2023Observed: 3.76 ft at 11:00PM Mar 22, 2023Observed: 3.76 ft at 11:15PM Mar 22, 2023Observed: 3.76 ft at 11:30PM Mar 22, 2023Observed: 3.77 ft at 11:45PM Mar 22, 2023Observed: 3.76 ft at 12:00AM Mar 23, 2023Observed: 3.78 ft at 12:15AM Mar 23, 2023Observed: 3.77 ft at 12:30AM Mar 23, 2023Observed: 3.77 ft at 12:45AM Mar 23, 2023Observed: 3.78 ft at 1:00AM Mar 23, 2023Observed: 3.76 ft at 1:15AM Mar 23, 2023Observed: 3.77 ft at 1:30AM Mar 23, 2023Observed: 3.76 ft at 1:45AM Mar 23, 2023Observed: 3.75 ft at 2:00AM Mar 23, 2023Observed: 3.76 ft at 2:15AM Mar 23, 2023Observed: 3.75 ft at 2:30AM Mar 23, 2023Observed: 3.76 ft at 2:45AM Mar 23, 2023Observed: 3.75 ft at 3:00AM Mar 23, 2023Observed: 3.74 ft at 3:15AM Mar 23, 2023Observed: 3.74 ft at 3:30AM Mar 23, 2023Observed: 3.74 ft at 3:45AM Mar 23, 2023Observed: 3.74 ft at 4:00AM Mar 23, 2023Observed: 3.75 ft at 4:15AM Mar 23, 2023Observed: 3.75 ft at 4:30AM Mar 23, 2023Observed: 3.74 ft at 4:45AM Mar 23, 2023Observed: 3.72 ft at 5:00AM Mar 23, 2023Observed: 3.74 ft at 5:15AM Mar 23, 2023Observed: 3.73 ft at 5:30AM Mar 23, 2023Observed: 3.73 ft at 5:45AM Mar 23, 2023Observed: 3.73 ft at 6:00AM Mar 23, 2023Observed: 3.71 ft at 6:15AM Mar 23, 2023Observed: 3.72 ft at 6:30AM Mar 23, 2023Observed: 3.73 ft at 6:45AM Mar 23, 2023Observed: 3.72 ft at 7:00AM Mar 23, 2023Observed: 3.72 ft at 7:15AM Mar 23, 2023Observed: 3.72 ft at 7:30AM Mar 23, 2023Observed: 3.72 ft at 7:45AM Mar 23, 2023Observed: 3.71 ft at 8:00AM Mar 23, 2023Observed: 3.71 ft at 8:15AM Mar 23, 2023Observed: 3.71 ft at 8:30AM Mar 23, 2023Observed: 3.7 ft at 8:45AM Mar 23, 2023Observed: 3.71 ft at 9:00AM Mar 23, 2023Observed: 3.71 ft at 9:15AM Mar 23, 2023Observed: 3.71 ft at 9:30AM Mar 23, 2023Observed: 3.71 ft at 9:45AM Mar 23, 2023Observed: 3.7 ft at 10:00AM Mar 23, 2023Observed: 3.71 ft at 10:15AM Mar 23, 2023Observed: 3.71 ft at 10:30AM Mar 23, 2023Observed: 3.71 ft at 10:45AM Mar 23, 2023Observed: 3.71 ft at 11:00AM Mar 23, 2023Observed: 3.72 ft at 11:15AM Mar 23, 2023Observed: 3.71 ft at 11:30AM Mar 23, 2023Observed: 3.71 ft at 11:45AM Mar 23, 2023Observed: 3.7 ft at 12:00PM Mar 23, 2023Observed: 3.71 ft at 12:15PM Mar 23, 2023Observed: 3.71 ft at 12:30PM Mar 23, 2023Observed: 3.71 ft at 12:45PM Mar 23, 2023Observed: 3.71 ft at 1:00PM Mar 23, 2023Observed: 3.71 ft at 1:15PM Mar 23, 2023Observed: 3.71 ft at 1:30PM Mar 23, 2023Observed: 3.72 ft at 1:45PM Mar 23, 2023Observed: 3.72 ft at 2:00PM Mar 23, 2023Observed: 3.72 ft at 2:15PM Mar 23, 2023Observed: 3.74 ft at 2:30PM Mar 23, 2023Observed: 3.74 ft at 2:45PM Mar 23, 2023Observed: 3.75 ft at 3:00PM Mar 23, 2023Observed: 3.76 ft at 3:15PM Mar 23, 2023Observed: 3.77 ft at 3:30PM Mar 23, 2023Observed: 3.78 ft at 3:45PM Mar 23, 2023Observed: 3.79 ft at 4:00PM Mar 23, 2023Observed: 3.79 ft at 4:15PM Mar 23, 2023Observed: 3.81 ft at 4:30PM Mar 23, 2023Observed: 3.81 ft at 4:45PM Mar 23, 2023Observed: 3.82 ft at 5:00PM Mar 23, 2023Observed: 3.84 ft at 5:15PM Mar 23, 2023Observed: 3.86 ft at 5:30PM Mar 23, 2023Observed: 3.85 ft at 5:45PM Mar 23, 2023Observed: 3.87 ft at 6:00PM Mar 23, 2023Observed: 3.88 ft at 6:15PM Mar 23, 2023Observed: 3.89 ft at 6:30PM Mar 23, 2023Observed: 3.92 ft at 6:45PM Mar 23, 2023Observed: 3.93 ft at 7:00PM Mar 23, 2023Observed: 3.94 ft at 7:15PM Mar 23, 2023Observed: 3.95 ft at 7:30PM Mar 23, 2023Observed: 3.97 ft at 7:45PM Mar 23, 2023Observed: 3.98 ft at 8:00PM Mar 23, 2023Observed: 4.01 ft at 8:15PM Mar 23, 2023Observed: 4.01 ft at 8:30PM Mar 23, 2023Observed: 4.02 ft at 8:45PM Mar 23, 2023Observed: 4.03 ft at 9:00PM Mar 23, 2023Observed: 4.05 ft at 9:15PM Mar 23, 2023Observed: 4.06 ft at 9:30PM Mar 23, 2023Observed: 4.08 ft at 9:45PM Mar 23, 2023Observed: 4.1 ft at 10:00PM Mar 23, 2023Observed: 4.11 ft at 10:15PM Mar 23, 2023Observed: 4.14 ft at 10:30PM Mar 23, 2023Observed: 4.15 ft at 10:45PM Mar 23, 2023Observed: 4.14 ft at 11:00PM Mar 23, 2023Observed: 4.15 ft at 11:15PM Mar 23, 2023Observed: 4.16 ft at 11:30PM Mar 23, 2023Observed: 4.17 ft at 11:45PM Mar 23, 2023Observed: 4.18 ft at 12:00AM Mar 24, 2023Observed: 4.18 ft at 12:15AM Mar 24, 2023Observed: 4.19 ft at 12:30AM Mar 24, 2023Observed: 4.19 ft at 12:45AM Mar 24, 2023Observed: 4.2 ft at 1:00AM Mar 24, 2023Observed: 4.21 ft at 1:15AM Mar 24, 2023Observed: 4.21 ft at 1:30AM Mar 24, 2023Observed: 4.23 ft at 1:45AM Mar 24, 2023Observed: 4.23 ft at 2:00AM Mar 24, 2023Observed: 4.24 ft at 2:15AM Mar 24, 2023Highest Observation: 4.25 ft at 2:30AM Mar 24, 2023Forecast: 4.3 ft 8:00AM Mar 24, 2023Forecast: 4.4 ft 2:00PM Mar 24, 2023Forecast: 4.4 ft 8:00PM Mar 24, 2023Forecast: 4.3 ft 2:00AM Mar 25, 2023Forecast: 4.3 ft 8:00AM Mar 25, 2023Forecast: 4.2 ft 2:00PM Mar 25, 2023Forecast: 4.3 ft 8:00PM Mar 25, 2023Forecast: 4.5 ft 2:00AM Mar 26, 2023Highest Forecast: 4.7 ft 8:00AM Mar 26, 2023USGS--Water Resources of the United StatesFBGM3(plotting HGIRG) Graph Created (3:15AM Mar 24, 2023)ObservedForecast (issued 11:16AM Mar 23)Latest observed value: 4.25 ft at 2:30 AM EDT 24-Mar-2023. Flood Stage is 6.5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts for the North Nashua River at Fitchburg are issued routinely year-round.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 10
Moderate Flood Stage: 8
Flood Stage: 6.5
Action Stage: 5
Low Stage (in feet): -9999

Historic Crests
(1) 9.25 ft on 04/05/1987
(2) 8.59 ft on 04/16/2007
(3) 8.02 ft on 03/07/2011
(4) 7.99 ft on 03/15/2010
(5) 7.92 ft on 10/30/2017
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.87 ft on 01/25/2019
(2) 7.18 ft on 09/18/2018
(3) 7.92 ft on 10/30/2017
(4) 6.64 ft on 08/28/2011
(5) 8.02 ft on 03/07/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
10 Significant flooding occurs along portions of the North Nashua River from Fitchburg downstream through Lancaster. In Fitchburg, flood waters reach low lying railroad bridges, and impacts occur at businesses near the junction of River and Depot Streets. Flood waters may cause erosion of the Westminster Street embankment in spots between Wachusett and Temple Streets. Overtopping of the dike along Commercial Road in Leominster may occur.
9 Flooding occurs in low lying areas along the river. Businesses near the junction of River and Depot streets in Fitchburg are impacted. Flood waters also approach low railroad bridges in Downtown Fitchburg.
8 Flooding of low lying areas along the river can be expected from Fitchburg downstream into Lancaster. Flooding affects businesses near the junction of River and Depot Streets in Fitchburg.
7 Flooding of low lying areas along the river can be expected. Flooding encroaches on businesses near the junction of River and Depot streets in Fitchburg.
About This Location Collapse

Latitude: 42.576201° N, Longitude: 71.788128° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 6.5 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 394.13 400.63 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:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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.
NWS Information
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Page last modified: 2-Nov-2020 7:30 PM
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