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Hydrograph River at a Glance Download
North Nashua River at Fitchburg Stage (ft)Flow (kcfs)Observed: 2.83 ft at 1:30PM May 13, 2024Observed: 2.83 ft at 1:45PM May 13, 2024Observed: 2.83 ft at 2:00PM May 13, 2024Observed: 2.83 ft at 2:15PM May 13, 2024Observed: 2.83 ft at 2:30PM May 13, 2024Observed: 2.83 ft at 2:45PM May 13, 2024Observed: 2.82 ft at 3:00PM May 13, 2024Observed: 2.82 ft at 3:15PM May 13, 2024Observed: 2.83 ft at 3:30PM May 13, 2024Observed: 2.83 ft at 3:45PM May 13, 2024Observed: 2.82 ft at 4:00PM May 13, 2024Observed: 2.82 ft at 4:15PM May 13, 2024Observed: 2.82 ft at 4:30PM May 13, 2024Observed: 2.82 ft at 4:45PM May 13, 2024Observed: 2.83 ft at 5:00PM May 13, 2024Observed: 2.82 ft at 5:15PM May 13, 2024Observed: 2.82 ft at 5:30PM May 13, 2024Observed: 2.82 ft at 5:45PM May 13, 2024Observed: 2.82 ft at 6:00PM May 13, 2024Observed: 2.82 ft at 6:15PM May 13, 2024Observed: 2.82 ft at 6:30PM May 13, 2024Observed: 2.82 ft at 6:45PM May 13, 2024Observed: 2.82 ft at 7:00PM May 13, 2024Observed: 2.82 ft at 7:15PM May 13, 2024Observed: 2.82 ft at 7:30PM May 13, 2024Observed: 2.82 ft at 7:45PM May 13, 2024Observed: 2.82 ft at 8:00PM May 13, 2024Observed: 2.82 ft at 8:15PM May 13, 2024Observed: 2.81 ft at 8:30PM May 13, 2024Observed: 2.82 ft at 8:45PM May 13, 2024Observed: 2.81 ft at 9:00PM May 13, 2024Observed: 2.81 ft at 9:15PM May 13, 2024Observed: 2.81 ft at 9:30PM May 13, 2024Observed: 2.81 ft at 9:45PM May 13, 2024Observed: 2.81 ft at 10:00PM May 13, 2024Observed: 2.81 ft at 10:15PM May 13, 2024Observed: 2.81 ft at 10:30PM May 13, 2024Observed: 2.81 ft at 10:45PM May 13, 2024Observed: 2.81 ft at 11:00PM May 13, 2024Observed: 2.81 ft at 11:15PM May 13, 2024Observed: 2.81 ft at 11:30PM May 13, 2024Observed: 2.81 ft at 11:45PM May 13, 2024Observed: 2.81 ft at 12:00AM May 14, 2024Observed: 2.81 ft at 12:15AM May 14, 2024Observed: 2.81 ft at 12:30AM May 14, 2024Observed: 2.81 ft at 12:45AM May 14, 2024Observed: 2.81 ft at 1:00AM May 14, 2024Observed: 2.8 ft at 1:15AM May 14, 2024Observed: 2.81 ft at 1:30AM May 14, 2024Observed: 2.8 ft at 1:45AM May 14, 2024Observed: 2.8 ft at 2:00AM May 14, 2024Observed: 2.81 ft at 2:15AM May 14, 2024Observed: 2.8 ft at 2:30AM May 14, 2024Observed: 2.8 ft at 2:45AM May 14, 2024Observed: 2.8 ft at 3:00AM May 14, 2024Observed: 2.8 ft at 3:15AM May 14, 2024Observed: 2.8 ft at 3:30AM May 14, 2024Observed: 2.8 ft at 3:45AM May 14, 2024Observed: 2.8 ft at 4:00AM May 14, 2024Observed: 2.8 ft at 4:15AM May 14, 2024Observed: 2.8 ft at 4:30AM May 14, 2024Observed: 2.8 ft at 4:45AM May 14, 2024Observed: 2.8 ft at 5:00AM May 14, 2024Observed: 2.8 ft at 5:15AM May 14, 2024Observed: 2.8 ft at 5:30AM May 14, 2024Observed: 2.8 ft at 5:45AM May 14, 2024Observed: 2.8 ft at 6:00AM May 14, 2024Observed: 2.81 ft at 6:15AM May 14, 2024Observed: 2.8 ft at 6:30AM May 14, 2024Observed: 2.8 ft at 6:45AM May 14, 2024Observed: 2.8 ft at 7:00AM May 14, 2024Observed: 2.8 ft at 7:15AM May 14, 2024Observed: 2.8 ft at 7:30AM May 14, 2024Observed: 2.8 ft at 7:45AM May 14, 2024Observed: 2.8 ft at 8:00AM May 14, 2024Observed: 2.8 ft at 8:15AM May 14, 2024Observed: 2.8 ft at 8:30AM May 14, 2024Observed: 2.8 ft at 8:45AM May 14, 2024Observed: 2.8 ft at 9:00AM May 14, 2024Observed: 2.8 ft at 9:15AM May 14, 2024Observed: 2.8 ft at 9:30AM May 14, 2024Observed: 2.8 ft at 9:45AM May 14, 2024Observed: 2.8 ft at 10:00AM May 14, 2024Observed: 2.8 ft at 10:15AM May 14, 2024Observed: 2.8 ft at 10:30AM May 14, 2024Observed: 2.8 ft at 10:45AM May 14, 2024Observed: 2.8 ft at 11:00AM May 14, 2024Observed: 2.8 ft at 11:15AM May 14, 2024Observed: 2.8 ft at 11:30AM May 14, 2024Observed: 2.8 ft at 11:45AM May 14, 2024Observed: 2.8 ft at 12:00PM May 14, 2024Observed: 2.8 ft at 12:15PM May 14, 2024Observed: 2.8 ft at 12:30PM May 14, 2024Observed: 2.81 ft at 12:45PM May 14, 2024Observed: 2.8 ft at 1:00PM May 14, 2024Observed: 2.8 ft at 1:15PM May 14, 2024Observed: 2.8 ft at 1:30PM May 14, 2024Observed: 2.81 ft at 1:45PM May 14, 2024Observed: 2.8 ft at 2:00PM May 14, 2024Observed: 2.81 ft at 2:15PM May 14, 2024Observed: 2.8 ft at 2:30PM May 14, 2024Observed: 2.8 ft at 2:45PM May 14, 2024Observed: 2.81 ft at 3:00PM May 14, 2024Observed: 2.8 ft at 3:15PM May 14, 2024Observed: 2.8 ft at 3:30PM May 14, 2024Observed: 2.8 ft at 3:45PM May 14, 2024Observed: 2.8 ft at 4:00PM May 14, 2024Observed: 2.81 ft at 4:15PM May 14, 2024Observed: 2.8 ft at 4:30PM May 14, 2024Observed: 2.79 ft at 4:45PM May 14, 2024Observed: 2.8 ft at 5:00PM May 14, 2024Observed: 2.79 ft at 5:15PM May 14, 2024Observed: 2.79 ft at 5:30PM May 14, 2024Observed: 2.79 ft at 5:45PM May 14, 2024Observed: 2.79 ft at 6:00PM May 14, 2024Observed: 2.79 ft at 6:15PM May 14, 2024Observed: 2.79 ft at 6:30PM May 14, 2024Observed: 2.79 ft at 6:45PM May 14, 2024Observed: 2.79 ft at 7:00PM May 14, 2024Observed: 2.79 ft at 7:15PM May 14, 2024Observed: 2.78 ft at 7:30PM May 14, 2024Observed: 2.79 ft at 7:45PM May 14, 2024Observed: 2.79 ft at 8:00PM May 14, 2024Observed: 2.79 ft at 8:15PM May 14, 2024Observed: 2.79 ft at 8:30PM May 14, 2024Observed: 2.79 ft at 8:45PM May 14, 2024Observed: 2.78 ft at 9:00PM May 14, 2024Observed: 2.79 ft at 9:15PM May 14, 2024Observed: 2.78 ft at 9:30PM May 14, 2024Observed: 2.79 ft at 9:45PM May 14, 2024Observed: 2.78 ft at 10:00PM May 14, 2024Observed: 2.78 ft at 10:15PM May 14, 2024Observed: 2.78 ft at 10:30PM May 14, 2024Observed: 2.78 ft at 10:45PM May 14, 2024Observed: 2.78 ft at 11:00PM May 14, 2024Observed: 2.77 ft at 11:15PM May 14, 2024Observed: 2.77 ft at 11:30PM May 14, 2024Observed: 2.78 ft at 11:45PM May 14, 2024Observed: 2.78 ft at 12:00AM May 15, 2024Observed: 2.77 ft at 12:15AM May 15, 2024Observed: 2.77 ft at 12:30AM May 15, 2024Observed: 2.77 ft at 12:45AM May 15, 2024Observed: 2.77 ft at 1:00AM May 15, 2024Observed: 2.77 ft at 1:15AM May 15, 2024Observed: 2.77 ft at 1:30AM May 15, 2024Observed: 2.77 ft at 1:45AM May 15, 2024Observed: 2.77 ft at 2:00AM May 15, 2024Observed: 2.77 ft at 2:15AM May 15, 2024Observed: 2.77 ft at 2:30AM May 15, 2024Observed: 2.77 ft at 2:45AM May 15, 2024Observed: 2.77 ft at 3:00AM May 15, 2024Observed: 2.77 ft at 3:15AM May 15, 2024Observed: 2.77 ft at 3:30AM May 15, 2024Observed: 2.77 ft at 3:45AM May 15, 2024Observed: 2.77 ft at 4:00AM May 15, 2024Observed: 2.77 ft at 4:15AM May 15, 2024Observed: 2.77 ft at 4:30AM May 15, 2024Observed: 2.77 ft at 4:45AM May 15, 2024Observed: 2.77 ft at 5:00AM May 15, 2024Observed: 2.77 ft at 5:15AM May 15, 2024Observed: 2.77 ft at 5:30AM May 15, 2024Observed: 2.77 ft at 5:45AM May 15, 2024Observed: 2.77 ft at 6:00AM May 15, 2024Observed: 2.77 ft at 6:15AM May 15, 2024Observed: 2.77 ft at 6:30AM May 15, 2024Observed: 2.77 ft at 6:45AM May 15, 2024Observed: 2.77 ft at 7:00AM May 15, 2024Observed: 2.77 ft at 7:15AM May 15, 2024Observed: 2.77 ft at 7:30AM May 15, 2024Observed: 2.77 ft at 7:45AM May 15, 2024Observed: 2.77 ft at 8:00AM May 15, 2024Observed: 2.77 ft at 8:15AM May 15, 2024Observed: 2.78 ft at 8:30AM May 15, 2024Observed: 2.78 ft at 8:45AM May 15, 2024Observed: 2.78 ft at 9:00AM May 15, 2024Observed: 2.78 ft at 9:15AM May 15, 2024Observed: 2.78 ft at 9:30AM May 15, 2024Observed: 2.78 ft at 9:45AM May 15, 2024Observed: 2.78 ft at 10:00AM May 15, 2024Observed: 2.78 ft at 10:15AM May 15, 2024Observed: 2.78 ft at 10:30AM May 15, 2024Observed: 2.78 ft at 10:45AM May 15, 2024Observed: 2.78 ft at 11:00AM May 15, 2024Observed: 2.78 ft at 11:15AM May 15, 2024Observed: 2.78 ft at 11:30AM May 15, 2024Observed: 2.78 ft at 11:45AM May 15, 2024Observed: 2.78 ft at 12:00PM May 15, 2024Observed: 2.78 ft at 12:15PM May 15, 2024Observed: 2.78 ft at 12:30PM May 15, 2024Observed: 2.78 ft at 12:45PM May 15, 2024Observed: 2.78 ft at 1:00PM May 15, 2024Observed: 2.78 ft at 1:15PM May 15, 2024Observed: 2.78 ft at 1:30PM May 15, 2024Observed: 2.78 ft at 1:45PM May 15, 2024Observed: 2.78 ft at 2:00PM May 15, 2024Observed: 2.78 ft at 2:15PM May 15, 2024Observed: 2.78 ft at 2:30PM May 15, 2024Observed: 2.78 ft at 2:45PM May 15, 2024Observed: 2.78 ft at 3:00PM May 15, 2024Observed: 2.79 ft at 3:15PM May 15, 2024Observed: 2.8 ft at 3:30PM May 15, 2024Observed: 2.82 ft at 3:45PM May 15, 2024Observed: 2.84 ft at 4:00PM May 15, 2024Observed: 2.85 ft at 4:15PM May 15, 2024Observed: 2.86 ft at 4:30PM May 15, 2024Observed: 2.87 ft at 4:45PM May 15, 2024Observed: 2.87 ft at 5:00PM May 15, 2024Observed: 2.87 ft at 5:15PM May 15, 2024Observed: 2.87 ft at 5:30PM May 15, 2024Observed: 2.86 ft at 5:45PM May 15, 2024Observed: 2.86 ft at 6:00PM May 15, 2024Observed: 2.85 ft at 6:15PM May 15, 2024Observed: 2.85 ft at 6:30PM May 15, 2024Observed: 2.85 ft at 6:45PM May 15, 2024Observed: 2.85 ft at 7:00PM May 15, 2024Observed: 2.84 ft at 7:15PM May 15, 2024Observed: 2.84 ft at 7:30PM May 15, 2024Observed: 2.84 ft at 7:45PM May 15, 2024Observed: 2.84 ft at 8:00PM May 15, 2024Observed: 2.84 ft at 8:15PM May 15, 2024Observed: 2.83 ft at 8:30PM May 15, 2024Observed: 2.83 ft at 8:45PM May 15, 2024Observed: 2.83 ft at 9:00PM May 15, 2024Observed: 2.83 ft at 9:15PM May 15, 2024Observed: 2.83 ft at 9:30PM May 15, 2024Observed: 2.83 ft at 9:45PM May 15, 2024Observed: 2.83 ft at 10:00PM May 15, 2024Observed: 2.83 ft at 10:15PM May 15, 2024Observed: 2.83 ft at 10:30PM May 15, 2024Observed: 2.82 ft at 10:45PM May 15, 2024Observed: 2.82 ft at 11:00PM May 15, 2024Observed: 2.83 ft at 11:15PM May 15, 2024Observed: 2.84 ft at 11:30PM May 15, 2024Observed: 2.89 ft at 11:45PM May 15, 2024Observed: 2.92 ft at 12:00AM May 16, 2024Observed: 2.91 ft at 12:15AM May 16, 2024Observed: 2.89 ft at 12:30AM May 16, 2024Observed: 2.91 ft at 12:45AM May 16, 2024Observed: 2.93 ft at 1:00AM May 16, 2024Observed: 2.95 ft at 1:15AM May 16, 2024Observed: 2.98 ft at 1:30AM May 16, 2024Observed: 3.01 ft at 1:45AM May 16, 2024Observed: 3.05 ft at 2:00AM May 16, 2024Observed: 3.05 ft at 2:15AM May 16, 2024Observed: 3.06 ft at 2:30AM May 16, 2024Observed: 3.09 ft at 2:45AM May 16, 2024Observed: 3.1 ft at 3:00AM May 16, 2024Observed: 3.07 ft at 3:15AM May 16, 2024Observed: 3.06 ft at 3:30AM May 16, 2024Observed: 3.06 ft at 3:45AM May 16, 2024Observed: 3.07 ft at 4:00AM May 16, 2024Observed: 3.11 ft at 4:15AM May 16, 2024Observed: 3.14 ft at 4:30AM May 16, 2024Observed: 3.2 ft at 4:45AM May 16, 2024Observed: 3.25 ft at 5:00AM May 16, 2024Observed: 3.29 ft at 5:15AM May 16, 2024Observed: 3.34 ft at 5:30AM May 16, 2024Observed: 3.35 ft at 5:45AM May 16, 2024Observed: 3.35 ft at 6:00AM May 16, 2024Observed: 3.34 ft at 6:15AM May 16, 2024Observed: 3.35 ft at 6:30AM May 16, 2024Observed: 3.36 ft at 6:45AM May 16, 2024Observed: 3.36 ft at 7:00AM May 16, 2024Observed: 3.36 ft at 7:15AM May 16, 2024Observed: 3.37 ft at 7:30AM May 16, 2024Observed: 3.38 ft at 7:45AM May 16, 2024Observed: 3.39 ft at 8:00AM May 16, 2024Observed: 3.39 ft at 8:15AM May 16, 2024Observed: 3.42 ft at 8:30AM May 16, 2024Observed: 3.46 ft at 8:45AM May 16, 2024Observed: 3.49 ft at 9:00AM May 16, 2024Observed: 3.5 ft at 9:15AM May 16, 2024Observed: 3.53 ft at 9:30AM May 16, 2024Observed: 3.54 ft at 9:45AM May 16, 2024Observed: 3.55 ft at 10:00AM May 16, 2024Observed: 3.56 ft at 10:15AM May 16, 2024Observed: 3.57 ft at 10:30AM May 16, 2024Observed: 3.58 ft at 10:45AM May 16, 2024Observed: 3.59 ft at 11:00AM May 16, 2024Observed: 3.59 ft at 11:15AM May 16, 2024Highest Observation: 3.61 ft at 11:30AM May 16, 2024Observed: 3.6 ft at 11:45AM May 16, 2024Observed: 3.6 ft at 12:00PM May 16, 2024Observed: 3.6 ft at 12:15PM May 16, 2024Highest Observation: 3.61 ft at 12:30PM May 16, 2024Highest Forecast: 3.8 ft 2:00PM May 16, 2024Forecast: 3.7 ft 8:00PM May 16, 2024Forecast: 3.5 ft 2:00AM May 17, 2024Forecast: 3.3 ft 8:00AM May 17, 2024Forecast: 3.2 ft 2:00PM May 17, 2024Forecast: 3.1 ft 8:00PM May 17, 2024Forecast: 3 ft 2:00AM May 18, 2024Forecast: 3 ft 8:00AM May 18, 2024Forecast: 2.9 ft 2:00PM May 18, 2024Forecast: 2.9 ft 8:00PM May 18, 2024Forecast: 2.9 ft 2:00AM May 19, 2024Forecast: 2.8 ft 8:00AM May 19, 2024USGS--Water Resources of the United StatesFBGM3(plotting HGIRG) Graph Created (1:15PM May 16, 2024)ObservedForecast (issued 11:14AM May 16)Latest observed value: 3.61 ft at 12:30 PM EDT 16-May-2024. 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) 6.91 ft on 12/18/2023
(2) 6.54 ft on 12/23/2022
(3) 6.69 ft on 02/04/2022
(4) 6.87 ft on 01/25/2019
(5) 7.18 ft on 09/18/2018
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.
Resources Collapse
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
National Weather Service
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(508) 622-3250
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