Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip
    
Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners
    
Feedback/Questions
    Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.



Hydrograph River at a Glance Download
Sudbury River at Saxonville Stage (ft)Flow (kcfs)Observed: 6.06 ft at 10:45AM Sep 29, 2023Observed: 6.06 ft at 11:00AM Sep 29, 2023Observed: 6.06 ft at 11:01AM Sep 29, 2023Observed: 6.07 ft at 11:15AM Sep 29, 2023Observed: 6.07 ft at 11:30AM Sep 29, 2023Observed: 6.09 ft at 11:45AM Sep 29, 2023Observed: 6.08 ft at 12:00PM Sep 29, 2023Observed: 6.1 ft at 12:15PM Sep 29, 2023Observed: 6.12 ft at 12:30PM Sep 29, 2023Observed: 6.13 ft at 12:45PM Sep 29, 2023Observed: 6.14 ft at 1:00PM Sep 29, 2023Observed: 6.15 ft at 1:15PM Sep 29, 2023Observed: 6.16 ft at 1:30PM Sep 29, 2023Observed: 6.18 ft at 1:45PM Sep 29, 2023Observed: 6.2 ft at 2:00PM Sep 29, 2023Observed: 6.21 ft at 2:15PM Sep 29, 2023Observed: 6.22 ft at 2:30PM Sep 29, 2023Observed: 6.23 ft at 2:45PM Sep 29, 2023Observed: 6.26 ft at 3:00PM Sep 29, 2023Observed: 6.31 ft at 3:15PM Sep 29, 2023Observed: 6.39 ft at 3:30PM Sep 29, 2023Observed: 6.47 ft at 3:45PM Sep 29, 2023Observed: 6.53 ft at 4:00PM Sep 29, 2023Observed: 6.6 ft at 4:15PM Sep 29, 2023Observed: 6.65 ft at 4:30PM Sep 29, 2023Observed: 6.71 ft at 4:45PM Sep 29, 2023Observed: 6.75 ft at 5:00PM Sep 29, 2023Observed: 6.79 ft at 5:15PM Sep 29, 2023Observed: 6.82 ft at 5:30PM Sep 29, 2023Observed: 6.85 ft at 5:45PM Sep 29, 2023Observed: 6.88 ft at 6:00PM Sep 29, 2023Observed: 6.9 ft at 6:15PM Sep 29, 2023Observed: 6.92 ft at 6:30PM Sep 29, 2023Observed: 6.94 ft at 6:45PM Sep 29, 2023Observed: 6.95 ft at 7:00PM Sep 29, 2023Observed: 6.95 ft at 7:01PM Sep 29, 2023Observed: 6.96 ft at 7:15PM Sep 29, 2023Observed: 6.97 ft at 7:30PM Sep 29, 2023Observed: 6.97 ft at 7:45PM Sep 29, 2023Observed: 6.97 ft at 8:00PM Sep 29, 2023Observed: 6.97 ft at 8:15PM Sep 29, 2023Observed: 6.96 ft at 8:30PM Sep 29, 2023Observed: 6.97 ft at 8:45PM Sep 29, 2023Observed: 6.96 ft at 9:00PM Sep 29, 2023Observed: 6.96 ft at 9:15PM Sep 29, 2023Observed: 6.96 ft at 9:30PM Sep 29, 2023Observed: 6.95 ft at 9:45PM Sep 29, 2023Observed: 6.95 ft at 10:00PM Sep 29, 2023Observed: 6.96 ft at 10:15PM Sep 29, 2023Observed: 6.95 ft at 10:30PM Sep 29, 2023Observed: 6.97 ft at 10:45PM Sep 29, 2023Observed: 6.98 ft at 11:00PM Sep 29, 2023Observed: 6.97 ft at 11:15PM Sep 29, 2023Observed: 6.97 ft at 11:30PM Sep 29, 2023Observed: 6.98 ft at 11:45PM Sep 29, 2023Observed: 6.97 ft at 12:00AM Sep 30, 2023Observed: 6.97 ft at 12:15AM Sep 30, 2023Observed: 6.97 ft at 12:30AM Sep 30, 2023Observed: 6.96 ft at 12:45AM Sep 30, 2023Observed: 6.97 ft at 1:00AM Sep 30, 2023Observed: 6.97 ft at 1:15AM Sep 30, 2023Observed: 6.96 ft at 1:30AM Sep 30, 2023Observed: 6.97 ft at 1:45AM Sep 30, 2023Observed: 6.97 ft at 2:00AM Sep 30, 2023Observed: 6.99 ft at 2:15AM Sep 30, 2023Observed: 7 ft at 2:30AM Sep 30, 2023Observed: 7 ft at 2:45AM Sep 30, 2023Observed: 7.01 ft at 3:00AM Sep 30, 2023Observed: 7.01 ft at 3:01AM Sep 30, 2023Observed: 7.03 ft at 3:15AM Sep 30, 2023Observed: 7.03 ft at 3:30AM Sep 30, 2023Observed: 7.05 ft at 3:45AM Sep 30, 2023Observed: 7.07 ft at 4:00AM Sep 30, 2023Observed: 7.07 ft at 4:15AM Sep 30, 2023Observed: 7.09 ft at 4:30AM Sep 30, 2023Observed: 7.11 ft at 4:45AM Sep 30, 2023Observed: 7.12 ft at 5:00AM Sep 30, 2023Observed: 7.14 ft at 5:15AM Sep 30, 2023Observed: 7.15 ft at 5:30AM Sep 30, 2023Observed: 7.16 ft at 5:45AM Sep 30, 2023Observed: 7.18 ft at 6:00AM Sep 30, 2023Observed: 7.19 ft at 6:15AM Sep 30, 2023Observed: 7.21 ft at 6:30AM Sep 30, 2023Observed: 7.22 ft at 6:45AM Sep 30, 2023Observed: 7.22 ft at 7:00AM Sep 30, 2023Observed: 7.23 ft at 7:15AM Sep 30, 2023Observed: 7.24 ft at 7:30AM Sep 30, 2023Observed: 7.25 ft at 7:45AM Sep 30, 2023Observed: 7.25 ft at 8:00AM Sep 30, 2023Observed: 7.25 ft at 8:15AM Sep 30, 2023Observed: 7.26 ft at 8:30AM Sep 30, 2023Observed: 7.26 ft at 8:45AM Sep 30, 2023Observed: 7.26 ft at 9:00AM Sep 30, 2023Observed: 7.27 ft at 9:15AM Sep 30, 2023Observed: 7.26 ft at 9:30AM Sep 30, 2023Observed: 7.27 ft at 9:45AM Sep 30, 2023Observed: 7.27 ft at 10:00AM Sep 30, 2023Observed: 7.27 ft at 10:15AM Sep 30, 2023Observed: 7.27 ft at 10:30AM Sep 30, 2023Observed: 7.27 ft at 10:45AM Sep 30, 2023Observed: 7.28 ft at 11:00AM Sep 30, 2023Observed: 7.28 ft at 11:01AM Sep 30, 2023Observed: 7.28 ft at 11:15AM Sep 30, 2023Observed: 7.28 ft at 11:30AM Sep 30, 2023Observed: 7.28 ft at 11:45AM Sep 30, 2023Observed: 7.29 ft at 12:00PM Sep 30, 2023Observed: 7.29 ft at 12:15PM Sep 30, 2023Observed: 7.3 ft at 12:30PM Sep 30, 2023Observed: 7.31 ft at 12:45PM Sep 30, 2023Observed: 7.32 ft at 1:00PM Sep 30, 2023Observed: 7.32 ft at 1:15PM Sep 30, 2023Observed: 7.34 ft at 1:30PM Sep 30, 2023Observed: 7.35 ft at 1:45PM Sep 30, 2023Observed: 7.36 ft at 2:00PM Sep 30, 2023Observed: 7.37 ft at 2:15PM Sep 30, 2023Observed: 7.38 ft at 2:30PM Sep 30, 2023Observed: 7.39 ft at 2:45PM Sep 30, 2023Observed: 7.4 ft at 3:00PM Sep 30, 2023Observed: 7.42 ft at 3:15PM Sep 30, 2023Observed: 7.43 ft at 3:30PM Sep 30, 2023Observed: 7.44 ft at 3:45PM Sep 30, 2023Observed: 7.45 ft at 4:00PM Sep 30, 2023Observed: 7.46 ft at 4:15PM Sep 30, 2023Observed: 7.47 ft at 4:30PM Sep 30, 2023Observed: 7.48 ft at 4:45PM Sep 30, 2023Observed: 7.49 ft at 5:00PM Sep 30, 2023Observed: 7.5 ft at 5:15PM Sep 30, 2023Observed: 7.52 ft at 5:30PM Sep 30, 2023Observed: 7.53 ft at 5:45PM Sep 30, 2023Observed: 7.53 ft at 6:00PM Sep 30, 2023Observed: 7.54 ft at 6:15PM Sep 30, 2023Observed: 7.55 ft at 6:30PM Sep 30, 2023Observed: 7.56 ft at 6:45PM Sep 30, 2023Observed: 7.57 ft at 7:00PM Sep 30, 2023Observed: 7.57 ft at 7:02PM Sep 30, 2023Observed: 7.57 ft at 7:15PM Sep 30, 2023Observed: 7.58 ft at 7:30PM Sep 30, 2023Observed: 7.58 ft at 7:45PM Sep 30, 2023Observed: 7.59 ft at 8:00PM Sep 30, 2023Observed: 7.6 ft at 8:15PM Sep 30, 2023Observed: 7.6 ft at 8:30PM Sep 30, 2023Observed: 7.61 ft at 8:45PM Sep 30, 2023Observed: 7.61 ft at 9:00PM Sep 30, 2023Observed: 7.61 ft at 9:15PM Sep 30, 2023Observed: 7.62 ft at 9:30PM Sep 30, 2023Observed: 7.62 ft at 9:45PM Sep 30, 2023Observed: 7.62 ft at 10:00PM Sep 30, 2023Observed: 7.62 ft at 10:15PM Sep 30, 2023Observed: 7.63 ft at 10:30PM Sep 30, 2023Observed: 7.64 ft at 10:45PM Sep 30, 2023Observed: 7.63 ft at 11:00PM Sep 30, 2023Observed: 7.64 ft at 11:15PM Sep 30, 2023Observed: 7.64 ft at 11:30PM Sep 30, 2023Observed: 7.64 ft at 11:45PM Sep 30, 2023Observed: 7.64 ft at 12:00AM Oct 01, 2023Observed: 7.65 ft at 12:15AM Oct 01, 2023Observed: 7.65 ft at 12:30AM Oct 01, 2023Observed: 7.65 ft at 12:45AM Oct 01, 2023Observed: 7.65 ft at 1:00AM Oct 01, 2023Observed: 7.65 ft at 1:15AM Oct 01, 2023Observed: 7.66 ft at 1:30AM Oct 01, 2023Observed: 7.66 ft at 1:45AM Oct 01, 2023Observed: 7.65 ft at 2:00AM Oct 01, 2023Observed: 7.66 ft at 2:15AM Oct 01, 2023Observed: 7.66 ft at 2:30AM Oct 01, 2023Observed: 7.66 ft at 2:45AM Oct 01, 2023Observed: 7.66 ft at 3:00AM Oct 01, 2023Observed: 7.66 ft at 3:01AM Oct 01, 2023Observed: 7.66 ft at 3:15AM Oct 01, 2023Observed: 7.66 ft at 3:30AM Oct 01, 2023Observed: 7.68 ft at 3:45AM Oct 01, 2023Observed: 7.66 ft at 4:00AM Oct 01, 2023Observed: 7.67 ft at 4:15AM Oct 01, 2023Observed: 7.67 ft at 4:30AM Oct 01, 2023Observed: 7.67 ft at 4:45AM Oct 01, 2023Observed: 7.67 ft at 5:00AM Oct 01, 2023Observed: 7.67 ft at 5:15AM Oct 01, 2023Observed: 7.67 ft at 5:30AM Oct 01, 2023Observed: 7.67 ft at 5:45AM Oct 01, 2023Observed: 7.67 ft at 6:00AM Oct 01, 2023Observed: 7.67 ft at 6:15AM Oct 01, 2023Observed: 7.67 ft at 6:30AM Oct 01, 2023Observed: 7.67 ft at 6:45AM Oct 01, 2023Observed: 7.67 ft at 7:00AM Oct 01, 2023Observed: 7.67 ft at 7:15AM Oct 01, 2023Observed: 7.67 ft at 7:30AM Oct 01, 2023Observed: 7.67 ft at 7:45AM Oct 01, 2023Observed: 7.67 ft at 8:00AM Oct 01, 2023Observed: 7.67 ft at 8:15AM Oct 01, 2023Observed: 7.67 ft at 8:30AM Oct 01, 2023Observed: 7.68 ft at 8:45AM Oct 01, 2023Observed: 7.68 ft at 9:00AM Oct 01, 2023Observed: 7.68 ft at 9:15AM Oct 01, 2023Observed: 7.68 ft at 9:30AM Oct 01, 2023Observed: 7.67 ft at 9:45AM Oct 01, 2023Observed: 7.68 ft at 10:00AM Oct 01, 2023Observed: 7.67 ft at 10:15AM Oct 01, 2023Observed: 7.67 ft at 10:30AM Oct 01, 2023Observed: 7.68 ft at 10:45AM Oct 01, 2023Observed: 7.67 ft at 11:00AM Oct 01, 2023Observed: 7.68 ft at 11:15AM Oct 01, 2023Observed: 7.68 ft at 11:16AM Oct 01, 2023Observed: 7.68 ft at 11:30AM Oct 01, 2023Observed: 7.68 ft at 11:45AM Oct 01, 2023Observed: 7.68 ft at 12:00PM Oct 01, 2023Observed: 7.69 ft at 12:15PM Oct 01, 2023Observed: 7.68 ft at 12:30PM Oct 01, 2023Observed: 7.67 ft at 12:45PM Oct 01, 2023Observed: 7.67 ft at 1:00PM Oct 01, 2023Observed: 7.67 ft at 1:15PM Oct 01, 2023Observed: 7.67 ft at 2:30PM Oct 01, 2023Observed: 7.68 ft at 2:45PM Oct 01, 2023Observed: 7.67 ft at 3:00PM Oct 01, 2023Observed: 7.67 ft at 3:15PM Oct 01, 2023Observed: 7.66 ft at 3:30PM Oct 01, 2023Observed: 7.66 ft at 3:45PM Oct 01, 2023Observed: 7.67 ft at 4:00PM Oct 01, 2023Observed: 7.67 ft at 4:15PM Oct 01, 2023Observed: 7.7 ft at 4:30PM Oct 01, 2023Observed: 7.72 ft at 4:45PM Oct 01, 2023Observed: 7.73 ft at 5:00PM Oct 01, 2023Observed: 7.74 ft at 5:15PM Oct 01, 2023Observed: 7.76 ft at 5:30PM Oct 01, 2023Observed: 7.77 ft at 5:45PM Oct 01, 2023Observed: 7.78 ft at 6:00PM Oct 01, 2023Observed: 7.79 ft at 6:15PM Oct 01, 2023Observed: 7.8 ft at 6:30PM Oct 01, 2023Observed: 7.81 ft at 6:45PM Oct 01, 2023Observed: 7.82 ft at 7:00PM Oct 01, 2023Observed: 7.83 ft at 7:15PM Oct 01, 2023Observed: 7.83 ft at 7:16PM Oct 01, 2023Observed: 7.82 ft at 7:30PM Oct 01, 2023Observed: 7.83 ft at 7:45PM Oct 01, 2023Observed: 7.84 ft at 8:00PM Oct 01, 2023Observed: 7.84 ft at 8:15PM Oct 01, 2023Observed: 7.84 ft at 8:30PM Oct 01, 2023Highest Observation: 7.85 ft at 8:45PM Oct 01, 2023Highest Observation: 7.85 ft at 9:00PM Oct 01, 2023Highest Observation: 7.85 ft at 9:15PM Oct 01, 2023Highest Observation: 7.85 ft at 9:30PM Oct 01, 2023Highest Observation: 7.85 ft at 9:45PM Oct 01, 2023Observed: 7.84 ft at 10:00PM Oct 01, 2023Highest Observation: 7.85 ft at 10:15PM Oct 01, 2023Highest Observation: 7.85 ft at 10:30PM Oct 01, 2023Observed: 7.84 ft at 10:45PM Oct 01, 2023Observed: 7.84 ft at 11:00PM Oct 01, 2023Highest Observation: 7.85 ft at 11:15PM Oct 01, 2023Observed: 7.84 ft at 11:30PM Oct 01, 2023Highest Observation: 7.85 ft at 11:45PM Oct 01, 2023Observed: 7.84 ft at 12:00AM Oct 02, 2023Observed: 7.84 ft at 12:15AM Oct 02, 2023Observed: 7.84 ft at 12:30AM Oct 02, 2023Observed: 7.83 ft at 12:45AM Oct 02, 2023Observed: 7.84 ft at 1:00AM Oct 02, 2023Observed: 7.83 ft at 1:15AM Oct 02, 2023Observed: 7.83 ft at 1:30AM Oct 02, 2023Observed: 7.83 ft at 1:45AM Oct 02, 2023Observed: 7.82 ft at 2:00AM Oct 02, 2023Observed: 7.82 ft at 2:15AM Oct 02, 2023Observed: 7.82 ft at 2:30AM Oct 02, 2023Observed: 7.82 ft at 2:45AM Oct 02, 2023Observed: 7.82 ft at 3:00AM Oct 02, 2023Observed: 7.82 ft at 3:15AM Oct 02, 2023Observed: 7.82 ft at 3:16AM Oct 02, 2023Observed: 7.81 ft at 3:30AM Oct 02, 2023Observed: 7.81 ft at 3:45AM Oct 02, 2023Observed: 7.81 ft at 4:00AM Oct 02, 2023Observed: 7.81 ft at 4:15AM Oct 02, 2023Observed: 7.8 ft at 4:30AM Oct 02, 2023Observed: 7.8 ft at 4:45AM Oct 02, 2023Observed: 7.8 ft at 5:00AM Oct 02, 2023Observed: 7.8 ft at 5:15AM Oct 02, 2023Observed: 7.79 ft at 5:30AM Oct 02, 2023Observed: 7.79 ft at 5:45AM Oct 02, 2023Observed: 7.79 ft at 6:00AM Oct 02, 2023Observed: 7.79 ft at 6:15AM Oct 02, 2023Observed: 7.78 ft at 6:30AM Oct 02, 2023Observed: 7.78 ft at 6:45AM Oct 02, 2023Observed: 7.78 ft at 7:00AM Oct 02, 2023Observed: 7.77 ft at 7:15AM Oct 02, 2023Observed: 7.77 ft at 7:30AM Oct 02, 2023Observed: 7.77 ft at 7:45AM Oct 02, 2023Observed: 7.77 ft at 8:00AM Oct 02, 2023Observed: 7.76 ft at 8:15AM Oct 02, 2023Observed: 7.76 ft at 8:30AM Oct 02, 2023Observed: 7.76 ft at 8:45AM Oct 02, 2023Observed: 7.77 ft at 9:00AM Oct 02, 2023Observed: 7.75 ft at 9:15AM Oct 02, 2023Highest Forecast: 7.6 ft 2:00PM Oct 02, 2023Highest Forecast: 7.6 ft 8:00PM Oct 02, 2023Forecast: 7.5 ft 2:00AM Oct 03, 2023Forecast: 7.5 ft 8:00AM Oct 03, 2023Forecast: 7.4 ft 2:00PM Oct 03, 2023Forecast: 7.3 ft 8:00PM Oct 03, 2023Forecast: 7.3 ft 2:00AM Oct 04, 2023Forecast: 7.2 ft 8:00AM Oct 04, 2023USGS--Water Resources of the United StatesSAXM3(plotting HGIRG) Graph Created (10:30AM Oct 2, 2023)ObservedForecast (issued 11:01AM Oct 1)Latest observed value: 7.75 ft at 9:15 AM EDT 2-Oct-2023. Flood Stage is 10 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts for the Sudbury River at Saxonville are issued routinely year-round.

Vertical datum height surveyed by the USGS

Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 10
Action Stage: 8.5
Low Stage (in feet): -9999

Historic Crests
(1) 13.99 ft on 03/31/2010
(2) 13.47 ft on 04/08/1987
(3) 13.30 ft on 06/07/1982
(4) 12.92 ft on 03/16/2010
(5) 12.61 ft on 03/23/2001
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.51 ft on 09/02/2021 (P)
(2) 10.61 ft on 07/10/2021 (P)
(3) 10.28 ft on 04/27/2019
(4) 10.69 ft on 04/23/2019
(5) 10.59 ft on 01/25/2019
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
15 Significant flooding occurs along the river, especially in Wayland and Concord. In Wayland portions of Route 20 both west and east bound as well as Route 27, Old Sudbury Road, will be impacted. In Concord Nashawtuc Road, Sudbury Road and Route 117 will be heavily impacted. This is a serious, potentially life threatening situation. Follow the directions of local officials if you are asked to evacuate. Do not go sightseeing and stay away from river banks which can give way due to erosion.
13.5 Significant flooding occurs along the river, espeically in Wayland and Concord. In Wayland portions of Route 20 both west and east bound as well as Route 27, Old Sudbury Road, will be impacted from Glezen Lane to the Sudbury town line. In Concord Nashawtuc Road, Sudbury Road and Route 117 will be heavily impacted. Should evacuation be required, do so immediately. Follow the directions of emergency management officials. Know alternate routes for travel, and stay away from flooded areas.
12.5 Flooding impacts portions of Route 27, Old Sudbury Road, in Wayland as well as Route 20 both west and east bound at Route 27. Portions of Route 27 will have up to 12 inches of water. Other low lying areas in Wayland will experience flooding including Pelham Island Road and Shore Drive near Stonebridge Road. Flood waters will be impacting portions of Nashawtuc Road, Sudbury Road and Route 117 in Concord.
12 Flooding affects low lying areas of Wayland, including Pelham Island Road near Heards Pond. Shore Drive near Stonebridge Road will experience some flooding as well as Route 20 eastbound at Route 27. Flood waters will begin to impact portions of Nashawtuc Road, Sudbury Road and Route 117 in Concord.
11 Flooding will affect portions of Shore and Pelham Island Roads as well as River Road in wayland. Flooding will also begin to impact Route 20 at Route 27. Other low lying areas along the river will experience flooding.
10 Flooding will affect low lying areas along the river in Wayland, including a portion of Shore Road and Pelham Island Road near Heards Pond.
About This Location Collapse

Latitude: 42.325373° N, Longitude: 71.397560° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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 109.78 119.78 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
Boston / Norton Weather Forecast Office
46 Commerce Way
Norton, MA 02766
(508) 622-3250
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:30 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities