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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.



Hydrograph River at a Glance Download
Farmington River at Simsbury Stage (ft)Flow (kcfs)Highest Observation: 2.14 ft at 8:30AM May 29, 2023Highest Observation: 2.14 ft at 8:31AM May 29, 2023Highest Observation: 2.14 ft at 8:45AM May 29, 2023Highest Observation: 2.14 ft at 9:00AM May 29, 2023Highest Observation: 2.14 ft at 9:15AM May 29, 2023Observed: 2.13 ft at 9:30AM May 29, 2023Observed: 2.13 ft at 9:45AM May 29, 2023Observed: 2.13 ft at 10:00AM May 29, 2023Observed: 2.13 ft at 10:15AM May 29, 2023Observed: 2.13 ft at 10:30AM May 29, 2023Observed: 2.13 ft at 10:45AM May 29, 2023Observed: 2.13 ft at 11:00AM May 29, 2023Observed: 2.13 ft at 11:15AM May 29, 2023Observed: 2.13 ft at 11:30AM May 29, 2023Observed: 2.13 ft at 11:45AM May 29, 2023Observed: 2.13 ft at 12:00PM May 29, 2023Observed: 2.13 ft at 12:15PM May 29, 2023Observed: 2.13 ft at 12:30PM May 29, 2023Observed: 2.13 ft at 12:45PM May 29, 2023Observed: 2.13 ft at 1:00PM May 29, 2023Observed: 2.13 ft at 1:15PM May 29, 2023Observed: 2.13 ft at 1:30PM May 29, 2023Observed: 2.13 ft at 1:45PM May 29, 2023Observed: 2.13 ft at 2:00PM May 29, 2023Observed: 2.13 ft at 2:15PM May 29, 2023Observed: 2.13 ft at 2:30PM May 29, 2023Observed: 2.13 ft at 2:31PM May 29, 2023Observed: 2.13 ft at 2:45PM May 29, 2023Observed: 2.12 ft at 3:00PM May 29, 2023Observed: 2.12 ft at 3:15PM May 29, 2023Observed: 2.12 ft at 3:30PM May 29, 2023Observed: 2.12 ft at 3:45PM May 29, 2023Observed: 2.11 ft at 4:00PM May 29, 2023Observed: 2.11 ft at 4:15PM May 29, 2023Observed: 2.11 ft at 4:30PM May 29, 2023Observed: 2.11 ft at 4:45PM May 29, 2023Observed: 2.11 ft at 5:00PM May 29, 2023Observed: 2.11 ft at 5:15PM May 29, 2023Observed: 2.11 ft at 5:30PM May 29, 2023Observed: 2.11 ft at 5:45PM May 29, 2023Observed: 2.11 ft at 6:00PM May 29, 2023Observed: 2.11 ft at 6:15PM May 29, 2023Observed: 2.1 ft at 6:30PM May 29, 2023Observed: 2.1 ft at 6:45PM May 29, 2023Observed: 2.1 ft at 7:00PM May 29, 2023Observed: 2.1 ft at 7:15PM May 29, 2023Observed: 2.1 ft at 7:30PM May 29, 2023Observed: 2.09 ft at 7:45PM May 29, 2023Observed: 2.09 ft at 8:00PM May 29, 2023Observed: 2.09 ft at 8:15PM May 29, 2023Observed: 2.09 ft at 8:30PM May 29, 2023Observed: 2.09 ft at 8:31PM May 29, 2023Observed: 2.09 ft at 8:45PM May 29, 2023Observed: 2.09 ft at 9:00PM May 29, 2023Observed: 2.09 ft at 9:15PM May 29, 2023Observed: 2.08 ft at 9:30PM May 29, 2023Observed: 2.08 ft at 9:45PM May 29, 2023Observed: 2.08 ft at 10:00PM May 29, 2023Observed: 2.08 ft at 10:15PM May 29, 2023Observed: 2.08 ft at 10:30PM May 29, 2023Observed: 2.08 ft at 10:45PM May 29, 2023Observed: 2.08 ft at 11:00PM May 29, 2023Observed: 2.08 ft at 11:15PM May 29, 2023Observed: 2.08 ft at 11:30PM May 29, 2023Observed: 2.07 ft at 11:45PM May 29, 2023Observed: 2.07 ft at 12:00AM May 30, 2023Observed: 2.07 ft at 12:15AM May 30, 2023Observed: 2.07 ft at 12:30AM May 30, 2023Observed: 2.07 ft at 12:45AM May 30, 2023Observed: 2.07 ft at 1:00AM May 30, 2023Observed: 2.07 ft at 1:15AM May 30, 2023Observed: 2.07 ft at 1:30AM May 30, 2023Observed: 2.06 ft at 1:45AM May 30, 2023Observed: 2.06 ft at 2:00AM May 30, 2023Observed: 2.06 ft at 2:15AM May 30, 2023Observed: 2.06 ft at 2:30AM May 30, 2023Observed: 2.06 ft at 2:31AM May 30, 2023Observed: 2.06 ft at 2:45AM May 30, 2023Observed: 2.06 ft at 3:00AM May 30, 2023Observed: 2.05 ft at 3:15AM May 30, 2023Observed: 2.05 ft at 3:30AM May 30, 2023Observed: 2.05 ft at 3:45AM May 30, 2023Observed: 2.05 ft at 4:00AM May 30, 2023Observed: 2.05 ft at 4:15AM May 30, 2023Observed: 2.05 ft at 4:30AM May 30, 2023Observed: 2.04 ft at 4:45AM May 30, 2023Observed: 2.04 ft at 5:00AM May 30, 2023Observed: 2.04 ft at 5:15AM May 30, 2023Observed: 2.04 ft at 5:30AM May 30, 2023Observed: 2.03 ft at 5:45AM May 30, 2023Observed: 2.03 ft at 6:00AM May 30, 2023Observed: 2.03 ft at 6:15AM May 30, 2023Observed: 2.03 ft at 6:30AM May 30, 2023Observed: 2.03 ft at 6:45AM May 30, 2023Observed: 2.03 ft at 7:00AM May 30, 2023Observed: 2.02 ft at 7:15AM May 30, 2023Observed: 2.02 ft at 7:30AM May 30, 2023Observed: 2.01 ft at 7:45AM May 30, 2023Observed: 2.01 ft at 8:00AM May 30, 2023Observed: 2.01 ft at 8:15AM May 30, 2023Observed: 2.01 ft at 8:30AM May 30, 2023Observed: 2.01 ft at 8:31AM May 30, 2023Observed: 2.01 ft at 8:45AM May 30, 2023Observed: 2.01 ft at 9:00AM May 30, 2023Observed: 2.01 ft at 9:15AM May 30, 2023Observed: 2 ft at 9:30AM May 30, 2023Observed: 2 ft at 9:45AM May 30, 2023Observed: 2 ft at 10:00AM May 30, 2023Observed: 2 ft at 10:15AM May 30, 2023Observed: 2 ft at 10:30AM May 30, 2023Observed: 1.99 ft at 10:45AM May 30, 2023Observed: 1.99 ft at 11:00AM May 30, 2023Observed: 1.99 ft at 11:15AM May 30, 2023Observed: 1.99 ft at 11:30AM May 30, 2023Observed: 1.99 ft at 11:45AM May 30, 2023Observed: 1.99 ft at 12:00PM May 30, 2023Observed: 1.99 ft at 12:15PM May 30, 2023Observed: 1.99 ft at 12:30PM May 30, 2023Observed: 1.99 ft at 12:45PM May 30, 2023Observed: 1.99 ft at 1:00PM May 30, 2023Observed: 1.99 ft at 1:15PM May 30, 2023Observed: 1.98 ft at 1:30PM May 30, 2023Observed: 1.98 ft at 1:45PM May 30, 2023Observed: 1.98 ft at 2:00PM May 30, 2023Observed: 1.97 ft at 2:15PM May 30, 2023Observed: 1.97 ft at 2:30PM May 30, 2023Observed: 1.97 ft at 2:45PM May 30, 2023Observed: 1.97 ft at 3:00PM May 30, 2023Observed: 1.97 ft at 3:15PM May 30, 2023Observed: 1.97 ft at 3:30PM May 30, 2023Observed: 1.97 ft at 3:45PM May 30, 2023Observed: 1.97 ft at 4:00PM May 30, 2023Observed: 1.97 ft at 4:15PM May 30, 2023Observed: 1.95 ft at 4:30PM May 30, 2023Observed: 1.95 ft at 4:45PM May 30, 2023Observed: 1.95 ft at 5:00PM May 30, 2023Observed: 1.95 ft at 5:15PM May 30, 2023Observed: 1.95 ft at 5:30PM May 30, 2023Observed: 1.95 ft at 5:45PM May 30, 2023Observed: 1.95 ft at 6:00PM May 30, 2023Observed: 1.95 ft at 6:15PM May 30, 2023Observed: 1.95 ft at 6:30PM May 30, 2023Observed: 1.95 ft at 6:45PM May 30, 2023Observed: 1.95 ft at 7:00PM May 30, 2023Observed: 1.95 ft at 7:15PM May 30, 2023Observed: 1.95 ft at 7:30PM May 30, 2023Observed: 1.95 ft at 7:45PM May 30, 2023Observed: 1.95 ft at 8:00PM May 30, 2023Observed: 1.95 ft at 8:15PM May 30, 2023Observed: 1.95 ft at 8:30PM May 30, 2023Observed: 1.95 ft at 8:31PM May 30, 2023Observed: 1.95 ft at 8:45PM May 30, 2023Observed: 1.95 ft at 9:00PM May 30, 2023Observed: 1.95 ft at 9:15PM May 30, 2023Observed: 1.95 ft at 9:30PM May 30, 2023Observed: 1.95 ft at 9:45PM May 30, 2023Observed: 1.94 ft at 10:00PM May 30, 2023Observed: 1.94 ft at 10:15PM May 30, 2023Observed: 1.94 ft at 10:30PM May 30, 2023Observed: 1.94 ft at 10:45PM May 30, 2023Observed: 1.94 ft at 11:00PM May 30, 2023Observed: 1.94 ft at 11:15PM May 30, 2023Observed: 1.94 ft at 11:30PM May 30, 2023Observed: 1.94 ft at 11:45PM May 30, 2023Observed: 1.94 ft at 12:00AM May 31, 2023Observed: 1.94 ft at 12:15AM May 31, 2023Observed: 1.94 ft at 12:30AM May 31, 2023Observed: 1.94 ft at 12:45AM May 31, 2023Observed: 1.93 ft at 1:00AM May 31, 2023Observed: 1.93 ft at 1:15AM May 31, 2023Observed: 1.93 ft at 1:30AM May 31, 2023Observed: 1.93 ft at 1:45AM May 31, 2023Observed: 1.93 ft at 2:00AM May 31, 2023Observed: 1.93 ft at 2:15AM May 31, 2023Observed: 1.93 ft at 2:30AM May 31, 2023Observed: 1.93 ft at 2:31AM May 31, 2023Observed: 1.93 ft at 2:45AM May 31, 2023Observed: 1.93 ft at 3:00AM May 31, 2023Observed: 1.93 ft at 3:15AM May 31, 2023Observed: 1.93 ft at 3:30AM May 31, 2023Observed: 1.93 ft at 3:45AM May 31, 2023Observed: 1.93 ft at 4:00AM May 31, 2023Observed: 1.93 ft at 4:15AM May 31, 2023Observed: 1.93 ft at 4:30AM May 31, 2023Observed: 1.93 ft at 4:45AM May 31, 2023Observed: 1.93 ft at 5:00AM May 31, 2023Observed: 1.93 ft at 5:15AM May 31, 2023Observed: 1.93 ft at 5:30AM May 31, 2023Observed: 1.93 ft at 5:45AM May 31, 2023Observed: 1.93 ft at 6:00AM May 31, 2023Observed: 1.93 ft at 6:15AM May 31, 2023Observed: 1.93 ft at 6:30AM May 31, 2023Observed: 1.93 ft at 6:45AM May 31, 2023Observed: 1.93 ft at 7:00AM May 31, 2023Observed: 1.93 ft at 7:15AM May 31, 2023Observed: 1.93 ft at 7:30AM May 31, 2023Observed: 1.93 ft at 7:45AM May 31, 2023Observed: 1.93 ft at 8:00AM May 31, 2023Observed: 1.93 ft at 8:15AM May 31, 2023Observed: 1.93 ft at 8:30AM May 31, 2023Observed: 1.93 ft at 8:45AM May 31, 2023Observed: 1.91 ft at 9:00AM May 31, 2023Observed: 1.92 ft at 9:15AM May 31, 2023Observed: 1.92 ft at 9:30AM May 31, 2023Observed: 1.92 ft at 9:45AM May 31, 2023Observed: 1.92 ft at 10:00AM May 31, 2023Observed: 1.92 ft at 10:15AM May 31, 2023Observed: 1.92 ft at 10:30AM May 31, 2023Observed: 1.92 ft at 10:45AM May 31, 2023Observed: 1.92 ft at 11:00AM May 31, 2023Observed: 1.92 ft at 11:15AM May 31, 2023Observed: 1.92 ft at 11:30AM May 31, 2023Observed: 1.91 ft at 11:45AM May 31, 2023Observed: 1.92 ft at 12:00PM May 31, 2023Observed: 1.91 ft at 12:15PM May 31, 2023Observed: 1.91 ft at 12:30PM May 31, 2023Observed: 1.91 ft at 12:45PM May 31, 2023Observed: 1.91 ft at 1:00PM May 31, 2023Observed: 1.91 ft at 1:15PM May 31, 2023Observed: 1.91 ft at 1:30PM May 31, 2023Observed: 1.91 ft at 1:45PM May 31, 2023Observed: 1.91 ft at 2:00PM May 31, 2023Observed: 1.91 ft at 2:15PM May 31, 2023Observed: 1.91 ft at 2:30PM May 31, 2023Observed: 1.91 ft at 2:45PM May 31, 2023Observed: 1.91 ft at 3:45PM May 31, 2023Observed: 1.91 ft at 4:00PM May 31, 2023Observed: 1.91 ft at 4:15PM May 31, 2023Observed: 1.91 ft at 4:30PM May 31, 2023Observed: 1.91 ft at 4:45PM May 31, 2023Observed: 1.91 ft at 5:00PM May 31, 2023Observed: 1.91 ft at 5:15PM May 31, 2023Observed: 1.91 ft at 5:30PM May 31, 2023Observed: 1.91 ft at 5:45PM May 31, 2023Observed: 1.9 ft at 6:00PM May 31, 2023Observed: 1.9 ft at 6:15PM May 31, 2023Observed: 1.9 ft at 6:30PM May 31, 2023Observed: 1.9 ft at 6:45PM May 31, 2023Observed: 1.9 ft at 7:00PM May 31, 2023Observed: 1.9 ft at 7:15PM May 31, 2023Observed: 1.89 ft at 7:30PM May 31, 2023Observed: 1.89 ft at 7:45PM May 31, 2023Observed: 1.89 ft at 8:00PM May 31, 2023Observed: 1.89 ft at 8:15PM May 31, 2023Observed: 1.89 ft at 8:30PM May 31, 2023Observed: 1.89 ft at 8:31PM May 31, 2023Observed: 1.89 ft at 8:45PM May 31, 2023Observed: 1.89 ft at 9:00PM May 31, 2023Observed: 1.89 ft at 9:15PM May 31, 2023Observed: 1.89 ft at 9:30PM May 31, 2023Observed: 1.89 ft at 9:45PM May 31, 2023Observed: 1.89 ft at 10:00PM May 31, 2023Observed: 1.89 ft at 10:15PM May 31, 2023Observed: 1.89 ft at 10:30PM May 31, 2023Observed: 1.88 ft at 10:45PM May 31, 2023Observed: 1.88 ft at 11:00PM May 31, 2023Observed: 1.88 ft at 11:15PM May 31, 2023Observed: 1.88 ft at 11:30PM May 31, 2023Observed: 1.88 ft at 11:45PM May 31, 2023Observed: 1.88 ft at 12:00AM Jun 01, 2023Observed: 1.88 ft at 12:15AM Jun 01, 2023Observed: 1.88 ft at 12:30AM Jun 01, 2023Observed: 1.87 ft at 12:45AM Jun 01, 2023Observed: 1.87 ft at 1:00AM Jun 01, 2023Observed: 1.87 ft at 1:15AM Jun 01, 2023Observed: 1.87 ft at 1:30AM Jun 01, 2023Observed: 1.87 ft at 1:45AM Jun 01, 2023Observed: 1.87 ft at 2:00AM Jun 01, 2023Observed: 1.87 ft at 2:15AM Jun 01, 2023Observed: 1.87 ft at 2:30AM Jun 01, 2023Observed: 1.87 ft at 2:31AM Jun 01, 2023Observed: 1.87 ft at 2:45AM Jun 01, 2023Observed: 1.87 ft at 3:00AM Jun 01, 2023Observed: 1.87 ft at 3:15AM Jun 01, 2023Observed: 1.87 ft at 3:30AM Jun 01, 2023Observed: 1.86 ft at 3:45AM Jun 01, 2023Observed: 1.86 ft at 4:00AM Jun 01, 2023Observed: 1.86 ft at 4:15AM Jun 01, 2023Observed: 1.86 ft at 4:30AM Jun 01, 2023Observed: 1.86 ft at 4:45AM Jun 01, 2023Observed: 1.86 ft at 5:00AM Jun 01, 2023Observed: 1.86 ft at 5:15AM Jun 01, 2023Observed: 1.86 ft at 5:30AM Jun 01, 2023Observed: 1.86 ft at 5:45AM Jun 01, 2023Observed: 1.86 ft at 6:00AM Jun 01, 2023Observed: 1.86 ft at 6:15AM Jun 01, 2023Observed: 1.86 ft at 6:30AM Jun 01, 2023Observed: 1.86 ft at 6:45AM Jun 01, 2023Observed: 1.86 ft at 7:00AM Jun 01, 2023Observed: 1.86 ft at 7:15AM Jun 01, 2023Observed: 1.86 ft at 7:30AM Jun 01, 2023Highest Forecast: 1.8 ft 2:00PM Jun 01, 2023Highest Forecast: 1.8 ft 8:00PM Jun 01, 2023Highest Forecast: 1.8 ft 2:00AM Jun 02, 2023Highest Forecast: 1.8 ft 8:00AM Jun 02, 2023Highest Forecast: 1.8 ft 2:00PM Jun 02, 2023Highest Forecast: 1.8 ft 8:00PM Jun 02, 2023Highest Forecast: 1.8 ft 2:00AM Jun 03, 2023Highest Forecast: 1.8 ft 8:00AM Jun 03, 2023USGS--Water Resources of the United StatesSIMC3(plotting HGIRG) Graph Created (8:15AM Jun 1, 2023)ObservedForecast (issued 10:48AM May 31)Latest observed value: 1.86 ft at 7:30 AM EDT 1-Jun-2023. Flood Stage is 12 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts for the Farmington River at Simsbury are issued routinely year-round.
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Upstream Gauge - at Unionville Upstream Gauge Downstream Gauge Downstream Gauge - at Tariffville
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 15
Flood Stage: 12
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
(1) 30.10 ft on 08/20/1955
(2) 22.10 ft on 10/17/1955
(3) 18.20 ft on 01/02/1949
(4) 17.80 ft on 11/05/1927
(5) 16.98 ft on 08/29/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 14.38 ft on 09/03/2021
(2) 13.81 ft on 06/15/2013
(3) 14.23 ft on 09/09/2011
(4) 16.98 ft on 08/29/2011
(5) 13.71 ft on 03/12/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.50 ft on 08/01/1995

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:14
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
30 Widespread catastrophic flooding occurs throughout the Valley. Follow the advice of local officials, and evacuate if asked to do so.
22 Widespread flooding will affect portions of Farmington, Avon, Simsbury, Bloomfield and East Granby. Follow the advice of local officials, and evacuate if asked to do so.
18 This is a serious flood event and will affect numerous areas along the river. Act now to protect life and property. Follow the directions of your local emergency management officials. If you are asked to evacuate do so immediately.
16 Moderate flooding occurs with numerous roads and residences affected. Evacuations may be needed along various roads in Avon and Simsbury, including Riverside Road in Simsbury. Flooding also begins to affect low lying sections of Bloomfield and East Granby. Follow the directions of emergency management officials and obey all road closures.
15 Moderate flooding begins with numerous roads and residences affected. Evacuations may be needed along various roads in Avon and Simsbury, including Riverside Road in Simsbury. Flooding also begins to affect low lying sections of Bloomfield and East Granby. Follow the directions of emergency management officials and obey all road closures.
13 Flooding affects Old Farms and Tolliston Roads in Avon, Meadow Road in Farmington, and Nod, Riverside, and Terrys Plain Roads in Simsbury. Route 315 in Simsbury is also impacted. Flooding spreads into Plantation Country Club and adjoining Town Farm Road in Simsbury. Also, flooding will approach the Paine Boathouse.
12 Flooding begins on Riverside Road in Simsbury. Flooding also begins along Old Bridge and Drake Hill Roads.
About This Location Collapse

Latitude: 41.869706° N, Longitude: 72.797244° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 12 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 150 162 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
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