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Hydrograph River at a Glance Download
Nashua River at East Pepperell Stage (ft)Flow (kcfs)Highest Observation: 3.91 ft at 7:15PM Apr 21, 2024Highest Observation: 3.91 ft at 7:16PM Apr 21, 2024Observed: 3.9 ft at 7:30PM Apr 21, 2024Observed: 3.89 ft at 7:45PM Apr 21, 2024Observed: 3.89 ft at 8:00PM Apr 21, 2024Observed: 3.88 ft at 8:15PM Apr 21, 2024Observed: 3.89 ft at 8:30PM Apr 21, 2024Observed: 3.89 ft at 8:45PM Apr 21, 2024Observed: 3.9 ft at 9:00PM Apr 21, 2024Observed: 3.89 ft at 9:15PM Apr 21, 2024Observed: 3.89 ft at 9:30PM Apr 21, 2024Observed: 3.89 ft at 9:45PM Apr 21, 2024Highest Observation: 3.91 ft at 10:00PM Apr 21, 2024Observed: 3.88 ft at 10:15PM Apr 21, 2024Observed: 3.89 ft at 10:30PM Apr 21, 2024Observed: 3.87 ft at 10:45PM Apr 21, 2024Observed: 3.87 ft at 11:00PM Apr 21, 2024Observed: 3.88 ft at 11:15PM Apr 21, 2024Observed: 3.89 ft at 11:30PM Apr 21, 2024Observed: 3.87 ft at 11:45PM Apr 21, 2024Observed: 3.87 ft at 12:00AM Apr 22, 2024Observed: 3.86 ft at 12:15AM Apr 22, 2024Observed: 3.86 ft at 12:30AM Apr 22, 2024Observed: 3.87 ft at 12:45AM Apr 22, 2024Observed: 3.87 ft at 1:00AM Apr 22, 2024Observed: 3.87 ft at 1:15AM Apr 22, 2024Observed: 3.85 ft at 1:30AM Apr 22, 2024Observed: 3.87 ft at 1:45AM Apr 22, 2024Observed: 3.86 ft at 2:00AM Apr 22, 2024Observed: 3.87 ft at 2:15AM Apr 22, 2024Observed: 3.85 ft at 2:30AM Apr 22, 2024Observed: 3.85 ft at 2:45AM Apr 22, 2024Observed: 3.85 ft at 3:00AM Apr 22, 2024Observed: 3.85 ft at 3:15AM Apr 22, 2024Observed: 3.85 ft at 3:16AM Apr 22, 2024Observed: 3.84 ft at 3:30AM Apr 22, 2024Observed: 3.84 ft at 3:45AM Apr 22, 2024Observed: 3.85 ft at 4:00AM Apr 22, 2024Observed: 3.83 ft at 4:15AM Apr 22, 2024Observed: 3.85 ft at 4:30AM Apr 22, 2024Observed: 3.85 ft at 4:45AM Apr 22, 2024Observed: 3.84 ft at 5:00AM Apr 22, 2024Observed: 3.83 ft at 5:15AM Apr 22, 2024Observed: 3.84 ft at 5:30AM Apr 22, 2024Observed: 3.83 ft at 5:45AM Apr 22, 2024Observed: 3.83 ft at 6:00AM Apr 22, 2024Observed: 3.81 ft at 6:15AM Apr 22, 2024Observed: 3.81 ft at 6:30AM Apr 22, 2024Observed: 3.81 ft at 6:45AM Apr 22, 2024Observed: 3.79 ft at 7:00AM Apr 22, 2024Observed: 3.82 ft at 7:15AM Apr 22, 2024Observed: 3.81 ft at 7:30AM Apr 22, 2024Observed: 3.82 ft at 7:45AM Apr 22, 2024Observed: 3.8 ft at 8:00AM Apr 22, 2024Observed: 3.79 ft at 8:15AM Apr 22, 2024Observed: 3.82 ft at 8:30AM Apr 22, 2024Observed: 3.79 ft at 8:45AM Apr 22, 2024Observed: 3.78 ft at 9:00AM Apr 22, 2024Observed: 3.79 ft at 9:15AM Apr 22, 2024Observed: 3.79 ft at 9:30AM Apr 22, 2024Observed: 3.77 ft at 9:45AM Apr 22, 2024Observed: 3.78 ft at 10:00AM Apr 22, 2024Observed: 3.79 ft at 10:15AM Apr 22, 2024Observed: 3.78 ft at 10:30AM Apr 22, 2024Observed: 3.76 ft at 10:45AM Apr 22, 2024Observed: 3.79 ft at 11:00AM Apr 22, 2024Observed: 3.77 ft at 11:15AM Apr 22, 2024Observed: 3.77 ft at 11:16AM Apr 22, 2024Observed: 3.75 ft at 11:30AM Apr 22, 2024Observed: 3.79 ft at 11:45AM Apr 22, 2024Observed: 3.75 ft at 12:00PM Apr 22, 2024Observed: 3.77 ft at 12:15PM Apr 22, 2024Observed: 3.77 ft at 12:30PM Apr 22, 2024Observed: 3.76 ft at 12:45PM Apr 22, 2024Observed: 3.75 ft at 1:00PM Apr 22, 2024Observed: 3.76 ft at 1:15PM Apr 22, 2024Observed: 3.76 ft at 1:30PM Apr 22, 2024Observed: 3.74 ft at 1:45PM Apr 22, 2024Observed: 3.74 ft at 2:00PM Apr 22, 2024Observed: 3.75 ft at 2:15PM Apr 22, 2024Observed: 3.72 ft at 2:30PM Apr 22, 2024Observed: 3.73 ft at 2:45PM Apr 22, 2024Observed: 3.71 ft at 3:00PM Apr 22, 2024Observed: 3.71 ft at 3:15PM Apr 22, 2024Observed: 3.72 ft at 3:30PM Apr 22, 2024Observed: 3.72 ft at 3:45PM Apr 22, 2024Observed: 3.73 ft at 4:00PM Apr 22, 2024Observed: 3.72 ft at 4:15PM Apr 22, 2024Observed: 3.7 ft at 4:30PM Apr 22, 2024Observed: 3.72 ft at 4:45PM Apr 22, 2024Observed: 3.69 ft at 5:00PM Apr 22, 2024Observed: 3.7 ft at 5:15PM Apr 22, 2024Observed: 3.71 ft at 5:30PM Apr 22, 2024Observed: 3.7 ft at 5:45PM Apr 22, 2024Observed: 3.7 ft at 6:00PM Apr 22, 2024Observed: 3.72 ft at 6:15PM Apr 22, 2024Observed: 3.7 ft at 6:30PM Apr 22, 2024Observed: 3.69 ft at 6:45PM Apr 22, 2024Observed: 3.7 ft at 7:00PM Apr 22, 2024Observed: 3.71 ft at 7:15PM Apr 22, 2024Observed: 3.71 ft at 7:16PM Apr 22, 2024Observed: 3.71 ft at 7:30PM Apr 22, 2024Observed: 3.69 ft at 7:45PM Apr 22, 2024Observed: 3.69 ft at 8:00PM Apr 22, 2024Observed: 3.69 ft at 8:15PM Apr 22, 2024Observed: 3.7 ft at 8:30PM Apr 22, 2024Observed: 3.7 ft at 8:45PM Apr 22, 2024Observed: 3.68 ft at 9:00PM Apr 22, 2024Observed: 3.7 ft at 9:15PM Apr 22, 2024Observed: 3.68 ft at 9:30PM Apr 22, 2024Observed: 3.68 ft at 9:45PM Apr 22, 2024Observed: 3.69 ft at 10:00PM Apr 22, 2024Observed: 3.69 ft at 10:15PM Apr 22, 2024Observed: 3.69 ft at 10:30PM Apr 22, 2024Observed: 3.69 ft at 10:45PM Apr 22, 2024Observed: 3.68 ft at 11:00PM Apr 22, 2024Observed: 3.68 ft at 11:15PM Apr 22, 2024Observed: 3.68 ft at 11:30PM Apr 22, 2024Observed: 3.68 ft at 11:45PM Apr 22, 2024Observed: 3.67 ft at 12:00AM Apr 23, 2024Observed: 3.67 ft at 12:15AM Apr 23, 2024Observed: 3.68 ft at 12:30AM Apr 23, 2024Observed: 3.68 ft at 12:45AM Apr 23, 2024Observed: 3.66 ft at 1:00AM Apr 23, 2024Observed: 3.66 ft at 1:15AM Apr 23, 2024Observed: 3.66 ft at 1:30AM Apr 23, 2024Observed: 3.67 ft at 1:45AM Apr 23, 2024Observed: 3.66 ft at 2:00AM Apr 23, 2024Observed: 3.65 ft at 2:15AM Apr 23, 2024Observed: 3.66 ft at 2:30AM Apr 23, 2024Observed: 3.65 ft at 2:45AM Apr 23, 2024Observed: 3.65 ft at 3:00AM Apr 23, 2024Observed: 3.65 ft at 3:15AM Apr 23, 2024Observed: 3.64 ft at 3:30AM Apr 23, 2024Observed: 3.65 ft at 3:45AM Apr 23, 2024Observed: 3.65 ft at 4:00AM Apr 23, 2024Observed: 3.66 ft at 4:15AM Apr 23, 2024Observed: 3.64 ft at 4:30AM Apr 23, 2024Observed: 3.65 ft at 4:45AM Apr 23, 2024Observed: 3.65 ft at 5:00AM Apr 23, 2024Observed: 3.64 ft at 5:15AM Apr 23, 2024Observed: 3.63 ft at 5:30AM Apr 23, 2024Observed: 3.63 ft at 5:45AM Apr 23, 2024Observed: 3.63 ft at 6:00AM Apr 23, 2024Observed: 3.62 ft at 6:15AM Apr 23, 2024Observed: 3.62 ft at 6:30AM Apr 23, 2024Observed: 3.62 ft at 6:45AM Apr 23, 2024Observed: 3.63 ft at 7:00AM Apr 23, 2024Observed: 3.63 ft at 7:15AM Apr 23, 2024Observed: 3.63 ft at 7:30AM Apr 23, 2024Observed: 3.62 ft at 7:45AM Apr 23, 2024Observed: 3.62 ft at 8:00AM Apr 23, 2024Observed: 3.62 ft at 8:15AM Apr 23, 2024Observed: 3.62 ft at 8:30AM Apr 23, 2024Observed: 2.84 ft at 8:45AM Apr 23, 2024Observed: 3.06 ft at 9:00AM Apr 23, 2024Observed: 3.07 ft at 9:15AM Apr 23, 2024Observed: 3.07 ft at 9:30AM Apr 23, 2024Observed: 3.06 ft at 9:45AM Apr 23, 2024Observed: 3.08 ft at 10:00AM Apr 23, 2024Observed: 3.08 ft at 10:15AM Apr 23, 2024Observed: 3.09 ft at 10:30AM Apr 23, 2024Observed: 3.1 ft at 10:45AM Apr 23, 2024Observed: 3.09 ft at 11:00AM Apr 23, 2024Observed: 3.1 ft at 11:15AM Apr 23, 2024Observed: 3.1 ft at 11:16AM Apr 23, 2024Observed: 3.11 ft at 11:30AM Apr 23, 2024Observed: 3.12 ft at 11:45AM Apr 23, 2024Observed: 3.12 ft at 12:00PM Apr 23, 2024Observed: 3.13 ft at 12:15PM Apr 23, 2024Observed: 3.13 ft at 12:30PM Apr 23, 2024Observed: 3.15 ft at 12:45PM Apr 23, 2024Observed: 3.15 ft at 1:00PM Apr 23, 2024Observed: 3.16 ft at 1:15PM Apr 23, 2024Observed: 3.15 ft at 1:30PM Apr 23, 2024Observed: 3.16 ft at 1:45PM Apr 23, 2024Observed: 3.17 ft at 2:00PM Apr 23, 2024Observed: 3.17 ft at 2:15PM Apr 23, 2024Observed: 3.18 ft at 2:30PM Apr 23, 2024Observed: 3.2 ft at 2:45PM Apr 23, 2024Observed: 3.2 ft at 3:00PM Apr 23, 2024Observed: 3.2 ft at 3:15PM Apr 23, 2024Observed: 3.2 ft at 3:30PM Apr 23, 2024Observed: 3.21 ft at 3:45PM Apr 23, 2024Observed: 3.22 ft at 4:00PM Apr 23, 2024Observed: 3.22 ft at 4:15PM Apr 23, 2024Observed: 3.22 ft at 4:30PM Apr 23, 2024Observed: 3.24 ft at 4:45PM Apr 23, 2024Observed: 3.23 ft at 5:00PM Apr 23, 2024Observed: 3.22 ft at 5:15PM Apr 23, 2024Observed: 3.23 ft at 5:30PM Apr 23, 2024Observed: 3.23 ft at 5:45PM Apr 23, 2024Observed: 3.24 ft at 6:00PM Apr 23, 2024Observed: 3.24 ft at 6:15PM Apr 23, 2024Observed: 3.24 ft at 6:30PM Apr 23, 2024Observed: 3.24 ft at 6:45PM Apr 23, 2024Observed: 3.24 ft at 7:00PM Apr 23, 2024Observed: 3.24 ft at 7:15PM Apr 23, 2024Observed: 3.25 ft at 7:30PM Apr 23, 2024Observed: 3.25 ft at 7:31PM Apr 23, 2024Observed: 3.25 ft at 7:45PM Apr 23, 2024Observed: 3.25 ft at 8:00PM Apr 23, 2024Observed: 3.27 ft at 8:15PM Apr 23, 2024Observed: 3.27 ft at 8:30PM Apr 23, 2024Observed: 3.26 ft at 8:45PM Apr 23, 2024Observed: 3.26 ft at 9:00PM Apr 23, 2024Observed: 3.26 ft at 9:15PM Apr 23, 2024Observed: 3.26 ft at 9:30PM Apr 23, 2024Observed: 3.25 ft at 9:45PM Apr 23, 2024Observed: 3.26 ft at 10:00PM Apr 23, 2024Observed: 3.26 ft at 10:15PM Apr 23, 2024Observed: 3.27 ft at 10:30PM Apr 23, 2024Observed: 3.27 ft at 10:45PM Apr 23, 2024Observed: 3.26 ft at 11:00PM Apr 23, 2024Observed: 3.27 ft at 11:15PM Apr 23, 2024Observed: 3.27 ft at 11:30PM Apr 23, 2024Observed: 3.27 ft at 11:45PM Apr 23, 2024Observed: 3.28 ft at 12:00AM Apr 24, 2024Observed: 3.28 ft at 12:15AM Apr 24, 2024Observed: 3.28 ft at 12:30AM Apr 24, 2024Observed: 3.28 ft at 12:45AM Apr 24, 2024Observed: 3.27 ft at 1:00AM Apr 24, 2024Observed: 3.27 ft at 1:15AM Apr 24, 2024Observed: 3.27 ft at 1:30AM Apr 24, 2024Observed: 3.28 ft at 1:45AM Apr 24, 2024Observed: 3.28 ft at 2:00AM Apr 24, 2024Observed: 3.28 ft at 2:15AM Apr 24, 2024Observed: 3.27 ft at 2:30AM Apr 24, 2024Observed: 3.27 ft at 2:45AM Apr 24, 2024Observed: 3.27 ft at 3:00AM Apr 24, 2024Observed: 3.29 ft at 3:15AM Apr 24, 2024Observed: 3.28 ft at 3:30AM Apr 24, 2024Observed: 3.28 ft at 3:31AM Apr 24, 2024Observed: 3.27 ft at 3:45AM Apr 24, 2024Observed: 3.27 ft at 4:00AM Apr 24, 2024Observed: 3.28 ft at 4:15AM Apr 24, 2024Observed: 3.27 ft at 4:30AM Apr 24, 2024Observed: 3.27 ft at 4:45AM Apr 24, 2024Observed: 3.27 ft at 5:00AM Apr 24, 2024Observed: 3.29 ft at 5:15AM Apr 24, 2024Observed: 3.28 ft at 5:30AM Apr 24, 2024Observed: 3.28 ft at 5:45AM Apr 24, 2024Observed: 3.27 ft at 6:00AM Apr 24, 2024Observed: 3.28 ft at 6:15AM Apr 24, 2024Observed: 3.28 ft at 6:30AM Apr 24, 2024Observed: 3.27 ft at 6:45AM Apr 24, 2024Observed: 3.27 ft at 7:00AM Apr 24, 2024Observed: 3.27 ft at 7:15AM Apr 24, 2024Observed: 3.27 ft at 7:30AM Apr 24, 2024Observed: 3.28 ft at 7:45AM Apr 24, 2024Observed: 3.27 ft at 8:00AM Apr 24, 2024Observed: 3.28 ft at 8:15AM Apr 24, 2024Observed: 3.28 ft at 8:30AM Apr 24, 2024Observed: 3.28 ft at 8:45AM Apr 24, 2024Observed: 3.27 ft at 9:00AM Apr 24, 2024Observed: 3.28 ft at 9:15AM Apr 24, 2024Observed: 3.28 ft at 9:30AM Apr 24, 2024Observed: 3.27 ft at 9:45AM Apr 24, 2024Observed: 3.26 ft at 10:00AM Apr 24, 2024Observed: 3.27 ft at 10:15AM Apr 24, 2024Observed: 3.25 ft at 10:30AM Apr 24, 2024Observed: 3.26 ft at 10:45AM Apr 24, 2024Observed: 3.26 ft at 11:00AM Apr 24, 2024Observed: 3.25 ft at 11:15AM Apr 24, 2024Observed: 3.26 ft at 11:30AM Apr 24, 2024Observed: 3.26 ft at 11:45AM Apr 24, 2024Observed: 3.26 ft at 12:00PM Apr 24, 2024Observed: 3.25 ft at 12:15PM Apr 24, 2024Observed: 3.25 ft at 12:30PM Apr 24, 2024Observed: 3.27 ft at 12:45PM Apr 24, 2024Observed: 3.25 ft at 1:00PM Apr 24, 2024Observed: 3.26 ft at 1:15PM Apr 24, 2024Observed: 3.26 ft at 1:30PM Apr 24, 2024Observed: 3.25 ft at 1:45PM Apr 24, 2024Observed: 3.25 ft at 2:00PM Apr 24, 2024Observed: 3.27 ft at 2:15PM Apr 24, 2024Observed: 3.24 ft at 2:30PM Apr 24, 2024Observed: 3.25 ft at 2:45PM Apr 24, 2024Observed: 3.24 ft at 3:00PM Apr 24, 2024Observed: 2.67 ft at 3:15PM Apr 24, 2024Observed: 2.59 ft at 3:30PM Apr 24, 2024Observed: 2.59 ft at 3:45PM Apr 24, 2024Observed: 2.6 ft at 4:00PM Apr 24, 2024Observed: 2.63 ft at 4:15PM Apr 24, 2024Observed: 2.63 ft at 4:30PM Apr 24, 2024Observed: 2.65 ft at 4:45PM Apr 24, 2024Observed: 2.68 ft at 5:00PM Apr 24, 2024Observed: 2.68 ft at 5:15PM Apr 24, 2024Observed: 2.69 ft at 5:30PM Apr 24, 2024Observed: 2.7 ft at 5:45PM Apr 24, 2024Observed: 2.71 ft at 6:00PM Apr 24, 2024Observed: 2.72 ft at 6:15PM Apr 24, 2024Observed: 2.76 ft at 6:30PM Apr 24, 2024Highest Forecast: 3.2 ft 8:00PM Apr 24, 2024Highest Forecast: 3.2 ft 2:00AM Apr 25, 2024Forecast: 3.1 ft 8:00AM Apr 25, 2024Forecast: 3.1 ft 2:00PM Apr 25, 2024Forecast: 3.1 ft 8:00PM Apr 25, 2024Forecast: 3 ft 2:00AM Apr 26, 2024Forecast: 3 ft 8:00AM Apr 26, 2024Forecast: 3 ft 2:00PM Apr 26, 2024Forecast: 2.9 ft 8:00PM Apr 26, 2024Forecast: 2.9 ft 2:00AM Apr 27, 2024Forecast: 2.9 ft 8:00AM Apr 27, 2024USGS--Water Resources of the United StatesDNSM3(plotting HGIRG) Graph Created (7:00PM Apr 24, 2024)ObservedForecast (issued 11:00AM Apr 24)Latest observed value: 2.76 ft at 6:30 PM EDT 24-Apr-2024. Flood Stage is 8 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Gauge reading affected by power generation.

NOTE: Forecasts for the Nashua River at East Pepperell are issued routinely year-round.

Vertical datum height surveyed by the USGS

Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 15
Moderate Flood Stage: 12
Flood Stage: 8
Action Stage: 7
Low Stage (in feet): -9999

Historic Crests
(1) 19.10 ft on 03/20/1936
(2) 16.19 ft on 04/07/1987
(3) 15.75 ft on 03/17/2010
(4) 14.08 ft on 09/23/1938
(5) 13.78 ft on 04/01/2010
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 8.15 ft on 01/15/2024
(2) 9.41 ft on 12/20/2023
(3) 9.21 ft on 04/02/2014
(4) 7.92 ft on 09/10/2011
(5) 9.64 ft on 03/09/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
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
16 Widespread inundation of residential areas along the Nashua River is likely. Areas that will be the most impacted include parts of East Pepperell, Hollis and Nashua. Flooding is expected along a stretch of Route 119 in Pepperell. In Groton, potentially affected areas include Fitchs Bridge Road, Long Hill Road, and Route 225. Take action now to protect life and property. Follow the directions of emergency management officials. The standard river gage does not report at this elevation.
15 Flooding is expected in low lying residential areas along portions of the Nashua River. Floodwaters inundate a Pepperell Airport as well as low lying areas on route 119. Know the alternate routes in your location so you avoid areas where flood waters may have damaged or closed area roadways. Follow the directions of local officials and if asked to evacuate do so immediately. The standard river gage can not report much higher than this elevation
14 Flooding is expected in low lying residential areas along portions of the Nashua River. Floodwaters inundate a portion of Route 119 in Pepperell, and also inundate businesses on Route 119 near its junction with Route 111. Know the alternate routes in your location so you avoid areas where flood waters may have damaged or closed area roadways. Follow the directions of local officials and if asked to evacuate do so immediately. The standard river gage can not report much higher than this elevation.
12 Flooding is expected in low lying residential areas along portions of the Nashua River. Floodwaters inundate a portion of Route 119 in Pepperell, and also inundate businesses on Route 119 near its junction with Route 111. Know the alternate routes in your location so you avoid areas where flood waters may have damaged or closed area roadways.
11 Flooding is expected in low lying residential areas along portions of the Nashua River. Follow the directions provided by your local emergency management officials. Avoid flood prone locations. Know the alternate routes in your location so you avoid areas where flood waters may have damaged or closed area roadways.
10 Minor lowland flooding is likely along the river from East Pepperell downstream through Hollis. Flooding will impact some low lying businesses along Route 119 in Pepperell in the vicinity of Route 111.
9 Minor lowland flooding is likely along the river from East Pepperell downstream through Hollis. Flooding will impact low lying businesses along Route 119 in Pepperell in the vicinity of its junction with Route 111.
8 Minor lowland flooding is likely along the river from East Pepperell downstream through Hollis.
About This Location Collapse

Latitude: 42.667589° N, Longitude: 71.575068° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 8 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 168.28 176.28 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 Not Available Not Available  

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
Boston / Norton Weather Forecast Office
46 Commerce Way
Norton, MA 02766
(508) 622-3250
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