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: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Boston / Norton, MA

Northeast River Forecast Center

Hydrograph

River at a Glance

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EDT) Datum: NAVD88 Metadata

NOTE: Forecasts for the Connecticut River at Northampton are issued as needed during times of high water, but are not routinely available.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 120 Moderate Flood Stage: 115 Flood Stage: 112 Action Stage: 110 Low Stage (in feet): 100 Historic Crests (1) 129.40 ft on 03/19/1936 (2) 125.00 ft on 09/22/1938 (3) 120.80 ft on 05/31/1984 (4) 119.90 ft on 04/06/1960 (5) 118.60 ft on 01/01/1949 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 112.28 ft on 04/23/2019 (2) 113.00 ft on 04/17/2019 (3) 112.88 ft on 02/27/2016 (4) 113.12 ft on 04/17/2014 (5) 112.70 ft on 09/08/2011 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:16 Legend FEMA Layer 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

If you notice any errors in the below information, please contact our Webmaster
130	This is near the flood of record, a very dangerous flood. Numerous road closures along the river are likely. Portions of Route 5 may be flooded in Northampton, Easthampton, and northern Holyoke. Know alternate routes. Follow detours to avoid these flooded areas. The Connecticut River may overtop the flood dike in some areas. Widespread inundation along the Mill River in Hatfield through the Valley and South Street neighborhood is expected.
126	The river elevation is approaching the flood of record. Significant impact to both residential and business interests is expected. Follow evacuation orders from local officials. Some roadways, including portions of Route 5 will be closed due to flooding. Know alternate routes and obey all road closures to avoid these areas.
123	Significant flooding will impact Northampton, Easthampton, Hadley and South Hadley. Avoid flooded areas. Follow the directions of local officials, and evacuate if asked to do so. This is a major flood, various low lying residential areas in the vicinity of the river will become inundated and various road closures will occur.
121	Extensive flooding is likely to impact Northampton, Easthampton, Hadley and South Hadley. Follow the directions of local officials and evacuate immediately if asked to do so.
119	Hatfield will continue to experience more extensive flooding as flood waters spread across King Street as well as parts of Main Street on the north side of town. Multiple street closures are likely. Significant flooding occurs in Northampton, Easthampton, Hadley and South Hadley. Follow the directions of local officials and evacuate immediately if asked to do so.
118	Flooding spreads across sections of Hatfield, Hadley, Northampton, Easthampton and South Hadley. Should evacuations be required, follow the directions of local officials and head to higher ground quickly. Farming interests will be significantly impacted in the Pioneer Valley as flood waters continue to rise.
117	Flooding impacts a large portion of the Oxbow in Northampton. Flooding associated with back water from the Connecticut will continue to impact Hatfield. Flooding will continue to worsen along the Mill River in Hatfield while flooding begins to affect parts of Cronin Hill. Some streets may be closed and some local evacuations may be required. Flooding will also become more widespread throughout Northampton.
115	Flooding affects a large portion of the Oxbow in Northampton. Flood waters also reach Route 5, a portion of which may be impassable. Flooding spreads across the lower lying sections of Hadley. In Hatfield, back water from the Connecticut River will push the Mill River over its banks, flooding parts of Valley Street and surrounding areas.
114	Flooding affects the Oxbow in Northampton, including Riverside Homes on Island Road. Flooding also spreads across parts of Hadley. In Hatfield, back water from the Connecticut River will push the Mill River over its banks flooding parts of Valley Street and surrounding areas.
113	Minor flooding will affect portions of Northampton in the vicinity of the Oxbow and Hadley along Aqua Vitae Road. Farming interests in Hatfield outside flood dike protection will experience flooding.
112	Lowland flooding is expected in and around Northampton including low lying sections of the Oxbow. Minor flooding affects Hadley along Aqua Vitae Road. In Hatfield, flooding is expected in the lowest lying sections, primarily farming interests outside flood dike protection.

About This Location

Latitude: 42.310833° N, Longitude: 72.621944° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 112 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 -0.671 111.33 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 0.0 112.0 Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other NULL NULL

Additional Information

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) 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. River stage data provided by the Northampton Department of Public Works.

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information Ensemble River Forecasts Hourly Precipitation

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