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Hydrograph River at a Glance Download
Farmington River at Simsbury Stage (ft)Flow (kcfs)Observed: 3.16 ft at 2:00AM May 15, 2024Observed: 3.16 ft at 2:15AM May 15, 2024Observed: 3.16 ft at 2:30AM May 15, 2024Observed: 3.16 ft at 2:45AM May 15, 2024Observed: 3.16 ft at 3:00AM May 15, 2024Observed: 3.15 ft at 3:15AM May 15, 2024Observed: 3.15 ft at 3:30AM May 15, 2024Observed: 3.15 ft at 3:45AM May 15, 2024Observed: 3.15 ft at 4:00AM May 15, 2024Observed: 3.14 ft at 4:15AM May 15, 2024Observed: 3.14 ft at 4:30AM May 15, 2024Observed: 3.14 ft at 4:45AM May 15, 2024Observed: 3.14 ft at 5:00AM May 15, 2024Observed: 3.14 ft at 5:15AM May 15, 2024Observed: 3.13 ft at 5:30AM May 15, 2024Observed: 3.13 ft at 5:45AM May 15, 2024Observed: 3.13 ft at 6:00AM May 15, 2024Observed: 3.13 ft at 6:15AM May 15, 2024Observed: 3.13 ft at 6:30AM May 15, 2024Observed: 3.12 ft at 6:45AM May 15, 2024Observed: 3.12 ft at 7:00AM May 15, 2024Observed: 3.12 ft at 7:15AM May 15, 2024Observed: 3.12 ft at 7:30AM May 15, 2024Observed: 3.11 ft at 7:45AM May 15, 2024Observed: 3.11 ft at 8:00AM May 15, 2024Observed: 3.11 ft at 8:15AM May 15, 2024Observed: 3.11 ft at 8:30AM May 15, 2024Observed: 3.11 ft at 8:45AM May 15, 2024Observed: 3.11 ft at 9:00AM May 15, 2024Observed: 3.11 ft at 9:15AM May 15, 2024Observed: 3.1 ft at 9:30AM May 15, 2024Observed: 3.1 ft at 9:45AM May 15, 2024Observed: 3.1 ft at 10:00AM May 15, 2024Observed: 3.1 ft at 10:15AM May 15, 2024Observed: 3.09 ft at 10:30AM May 15, 2024Observed: 3.09 ft at 10:45AM May 15, 2024Observed: 3.09 ft at 11:00AM May 15, 2024Observed: 3.09 ft at 11:15AM May 15, 2024Observed: 3.09 ft at 11:30AM May 15, 2024Observed: 3.09 ft at 11:45AM May 15, 2024Observed: 3.09 ft at 12:00PM May 15, 2024Observed: 3.09 ft at 12:15PM May 15, 2024Observed: 3.08 ft at 12:30PM May 15, 2024Observed: 3.08 ft at 12:45PM May 15, 2024Observed: 3.08 ft at 1:00PM May 15, 2024Observed: 3.08 ft at 1:15PM May 15, 2024Observed: 3.08 ft at 1:30PM May 15, 2024Observed: 3.08 ft at 1:45PM May 15, 2024Observed: 3.07 ft at 2:00PM May 15, 2024Observed: 3.07 ft at 2:15PM May 15, 2024Observed: 3.07 ft at 2:30PM May 15, 2024Observed: 3.07 ft at 2:45PM May 15, 2024Observed: 3.07 ft at 3:00PM May 15, 2024Observed: 3.07 ft at 3:01PM May 15, 2024Observed: 3.07 ft at 3:15PM May 15, 2024Observed: 3.07 ft at 3:30PM May 15, 2024Observed: 3.06 ft at 3:45PM May 15, 2024Observed: 3.06 ft at 4:00PM May 15, 2024Observed: 3.06 ft at 4:15PM May 15, 2024Observed: 3.06 ft at 4:30PM May 15, 2024Observed: 3.06 ft at 4:45PM May 15, 2024Observed: 3.06 ft at 5:00PM May 15, 2024Observed: 3.06 ft at 5:15PM May 15, 2024Observed: 3.06 ft at 5:30PM May 15, 2024Observed: 3.06 ft at 5:45PM May 15, 2024Observed: 3.06 ft at 6:00PM May 15, 2024Observed: 3.06 ft at 6:15PM May 15, 2024Observed: 3.06 ft at 6:30PM May 15, 2024Observed: 3.06 ft at 6:45PM May 15, 2024Observed: 3.06 ft at 7:00PM May 15, 2024Observed: 3.06 ft at 7:15PM May 15, 2024Observed: 3.06 ft at 7:30PM May 15, 2024Observed: 3.06 ft at 7:45PM May 15, 2024Observed: 3.06 ft at 8:00PM May 15, 2024Observed: 3.06 ft at 8:15PM May 15, 2024Observed: 3.06 ft at 8:30PM May 15, 2024Observed: 3.06 ft at 8:45PM May 15, 2024Observed: 3.06 ft at 9:00PM May 15, 2024Observed: 3.06 ft at 9:01PM May 15, 2024Observed: 3.06 ft at 9:15PM May 15, 2024Observed: 3.06 ft at 9:30PM May 15, 2024Observed: 3.06 ft at 9:45PM May 15, 2024Observed: 3.06 ft at 10:00PM May 15, 2024Observed: 3.06 ft at 10:15PM May 15, 2024Observed: 3.06 ft at 10:30PM May 15, 2024Observed: 3.07 ft at 10:45PM May 15, 2024Observed: 3.07 ft at 11:00PM May 15, 2024Observed: 3.07 ft at 11:15PM May 15, 2024Observed: 3.07 ft at 11:30PM May 15, 2024Observed: 3.07 ft at 11:45PM May 15, 2024Observed: 3.07 ft at 12:00AM May 16, 2024Observed: 3.07 ft at 12:15AM May 16, 2024Observed: 3.07 ft at 12:30AM May 16, 2024Observed: 3.07 ft at 12:45AM May 16, 2024Observed: 3.07 ft at 1:00AM May 16, 2024Observed: 3.07 ft at 1:15AM May 16, 2024Observed: 3.07 ft at 1:30AM May 16, 2024Observed: 3.08 ft at 1:45AM May 16, 2024Observed: 3.08 ft at 2:00AM May 16, 2024Observed: 3.09 ft at 2:15AM May 16, 2024Observed: 3.09 ft at 2:30AM May 16, 2024Observed: 3.1 ft at 2:45AM May 16, 2024Observed: 3.12 ft at 3:00AM May 16, 2024Observed: 3.12 ft at 3:01AM May 16, 2024Observed: 3.13 ft at 3:15AM May 16, 2024Observed: 3.14 ft at 3:30AM May 16, 2024Observed: 3.15 ft at 3:45AM May 16, 2024Observed: 3.16 ft at 4:00AM May 16, 2024Observed: 3.18 ft at 4:15AM May 16, 2024Observed: 3.19 ft at 4:30AM May 16, 2024Observed: 3.21 ft at 4:45AM May 16, 2024Observed: 3.22 ft at 5:00AM May 16, 2024Observed: 3.24 ft at 5:15AM May 16, 2024Observed: 3.25 ft at 5:30AM May 16, 2024Observed: 3.27 ft at 5:45AM May 16, 2024Observed: 3.29 ft at 6:00AM May 16, 2024Observed: 3.3 ft at 6:15AM May 16, 2024Observed: 3.32 ft at 6:30AM May 16, 2024Observed: 3.34 ft at 6:45AM May 16, 2024Observed: 3.36 ft at 7:00AM May 16, 2024Observed: 3.38 ft at 7:15AM May 16, 2024Observed: 3.4 ft at 7:30AM May 16, 2024Observed: 3.42 ft at 7:45AM May 16, 2024Observed: 3.44 ft at 8:00AM May 16, 2024Observed: 3.45 ft at 8:15AM May 16, 2024Observed: 3.47 ft at 8:30AM May 16, 2024Observed: 3.49 ft at 8:45AM May 16, 2024Observed: 3.51 ft at 9:00AM May 16, 2024Observed: 3.51 ft at 9:01AM May 16, 2024Observed: 3.53 ft at 9:15AM May 16, 2024Observed: 3.55 ft at 9:30AM May 16, 2024Observed: 3.57 ft at 9:45AM May 16, 2024Observed: 3.6 ft at 10:00AM May 16, 2024Observed: 3.62 ft at 10:15AM May 16, 2024Observed: 3.65 ft at 10:30AM May 16, 2024Observed: 3.67 ft at 10:45AM May 16, 2024Observed: 3.7 ft at 11:00AM May 16, 2024Observed: 3.72 ft at 11:15AM May 16, 2024Observed: 3.75 ft at 11:30AM May 16, 2024Observed: 3.78 ft at 11:45AM May 16, 2024Observed: 3.81 ft at 12:00PM May 16, 2024Observed: 3.84 ft at 12:15PM May 16, 2024Observed: 3.87 ft at 12:30PM May 16, 2024Observed: 3.91 ft at 12:45PM May 16, 2024Observed: 3.93 ft at 1:00PM May 16, 2024Observed: 3.97 ft at 1:15PM May 16, 2024Observed: 4 ft at 1:30PM May 16, 2024Observed: 4.03 ft at 1:45PM May 16, 2024Observed: 4.05 ft at 2:00PM May 16, 2024Observed: 4.08 ft at 2:15PM May 16, 2024Observed: 4.11 ft at 2:30PM May 16, 2024Observed: 4.14 ft at 2:45PM May 16, 2024Observed: 4.16 ft at 3:00PM May 16, 2024Observed: 4.16 ft at 3:01PM May 16, 2024Observed: 4.19 ft at 3:15PM May 16, 2024Observed: 4.21 ft at 3:30PM May 16, 2024Observed: 4.23 ft at 3:45PM May 16, 2024Observed: 4.25 ft at 4:00PM May 16, 2024Observed: 4.27 ft at 4:15PM May 16, 2024Observed: 4.29 ft at 4:30PM May 16, 2024Observed: 4.31 ft at 4:45PM May 16, 2024Observed: 4.33 ft at 5:00PM May 16, 2024Observed: 4.35 ft at 5:15PM May 16, 2024Observed: 4.36 ft at 5:30PM May 16, 2024Observed: 4.38 ft at 5:45PM May 16, 2024Observed: 4.4 ft at 6:00PM May 16, 2024Observed: 4.42 ft at 6:15PM May 16, 2024Observed: 4.44 ft at 6:30PM May 16, 2024Observed: 4.45 ft at 6:45PM May 16, 2024Observed: 4.47 ft at 7:00PM May 16, 2024Observed: 4.48 ft at 7:15PM May 16, 2024Observed: 4.5 ft at 7:30PM May 16, 2024Observed: 4.51 ft at 7:45PM May 16, 2024Observed: 4.53 ft at 8:00PM May 16, 2024Observed: 4.54 ft at 8:15PM May 16, 2024Observed: 4.56 ft at 8:30PM May 16, 2024Observed: 4.57 ft at 8:45PM May 16, 2024Observed: 4.59 ft at 9:00PM May 16, 2024Observed: 4.59 ft at 9:01PM May 16, 2024Observed: 4.6 ft at 9:15PM May 16, 2024Observed: 4.61 ft at 9:30PM May 16, 2024Observed: 4.63 ft at 9:45PM May 16, 2024Observed: 4.64 ft at 10:00PM May 16, 2024Observed: 4.65 ft at 10:15PM May 16, 2024Observed: 4.66 ft at 10:30PM May 16, 2024Observed: 4.67 ft at 10:45PM May 16, 2024Observed: 4.68 ft at 11:00PM May 16, 2024Observed: 4.69 ft at 11:15PM May 16, 2024Observed: 4.7 ft at 11:30PM May 16, 2024Observed: 4.71 ft at 11:45PM May 16, 2024Observed: 4.72 ft at 12:00AM May 17, 2024Observed: 4.73 ft at 12:15AM May 17, 2024Observed: 4.74 ft at 12:30AM May 17, 2024Observed: 4.75 ft at 12:45AM May 17, 2024Observed: 4.76 ft at 1:00AM May 17, 2024Observed: 4.77 ft at 1:15AM May 17, 2024Observed: 4.77 ft at 1:30AM May 17, 2024Observed: 4.78 ft at 1:45AM May 17, 2024Observed: 4.79 ft at 2:00AM May 17, 2024Observed: 4.79 ft at 2:15AM May 17, 2024Observed: 4.8 ft at 2:30AM May 17, 2024Observed: 4.81 ft at 2:45AM May 17, 2024Observed: 4.81 ft at 3:00AM May 17, 2024Observed: 4.82 ft at 3:15AM May 17, 2024Observed: 4.82 ft at 3:30AM May 17, 2024Observed: 4.83 ft at 3:45AM May 17, 2024Observed: 4.83 ft at 4:00AM May 17, 2024Observed: 4.84 ft at 4:15AM May 17, 2024Observed: 4.84 ft at 4:30AM May 17, 2024Observed: 4.85 ft at 4:45AM May 17, 2024Observed: 4.85 ft at 5:00AM May 17, 2024Observed: 4.85 ft at 5:15AM May 17, 2024Observed: 4.86 ft at 5:30AM May 17, 2024Observed: 4.86 ft at 5:45AM May 17, 2024Observed: 4.86 ft at 6:00AM May 17, 2024Observed: 4.87 ft at 6:15AM May 17, 2024Observed: 4.87 ft at 6:30AM May 17, 2024Observed: 4.87 ft at 6:45AM May 17, 2024Observed: 4.87 ft at 7:00AM May 17, 2024Observed: 4.88 ft at 7:15AM May 17, 2024Observed: 4.88 ft at 7:30AM May 17, 2024Observed: 4.88 ft at 7:45AM May 17, 2024Observed: 4.88 ft at 8:00AM May 17, 2024Observed: 4.88 ft at 8:15AM May 17, 2024Observed: 4.88 ft at 8:30AM May 17, 2024Highest Observation: 4.89 ft at 8:45AM May 17, 2024Highest Observation: 4.89 ft at 9:00AM May 17, 2024Highest Observation: 4.89 ft at 9:15AM May 17, 2024Highest Observation: 4.89 ft at 9:30AM May 17, 2024Highest Observation: 4.89 ft at 9:45AM May 17, 2024Highest Observation: 4.89 ft at 10:00AM May 17, 2024Highest Observation: 4.89 ft at 10:15AM May 17, 2024Highest Observation: 4.89 ft at 10:30AM May 17, 2024Observed: 4.88 ft at 10:45AM May 17, 2024Observed: 4.88 ft at 11:00AM May 17, 2024Observed: 4.88 ft at 11:15AM May 17, 2024Observed: 4.88 ft at 11:30AM May 17, 2024Observed: 4.88 ft at 11:45AM May 17, 2024Observed: 4.88 ft at 12:00PM May 17, 2024Observed: 4.88 ft at 12:15PM May 17, 2024Observed: 4.88 ft at 12:30PM May 17, 2024Observed: 4.88 ft at 12:45PM May 17, 2024Observed: 4.88 ft at 1:00PM May 17, 2024Observed: 4.87 ft at 1:15PM May 17, 2024Observed: 4.87 ft at 1:30PM May 17, 2024Observed: 4.87 ft at 1:45PM May 17, 2024Observed: 4.86 ft at 2:00PM May 17, 2024Observed: 4.86 ft at 2:15PM May 17, 2024Observed: 4.85 ft at 2:30PM May 17, 2024Observed: 4.84 ft at 2:45PM May 17, 2024Observed: 4.84 ft at 3:00PM May 17, 2024Observed: 4.84 ft at 3:01PM May 17, 2024Observed: 4.83 ft at 3:15PM May 17, 2024Observed: 4.82 ft at 3:30PM May 17, 2024Observed: 4.82 ft at 3:45PM May 17, 2024Observed: 4.81 ft at 4:00PM May 17, 2024Observed: 4.8 ft at 4:15PM May 17, 2024Observed: 4.8 ft at 4:30PM May 17, 2024Observed: 4.79 ft at 4:45PM May 17, 2024Observed: 4.77 ft at 5:00PM May 17, 2024Observed: 4.77 ft at 5:15PM May 17, 2024Observed: 4.75 ft at 5:30PM May 17, 2024Observed: 4.75 ft at 5:45PM May 17, 2024Observed: 4.74 ft at 6:00PM May 17, 2024Observed: 4.73 ft at 6:15PM May 17, 2024Observed: 4.72 ft at 6:30PM May 17, 2024Observed: 4.71 ft at 6:45PM May 17, 2024Observed: 4.7 ft at 7:00PM May 17, 2024Observed: 4.69 ft at 7:15PM May 17, 2024Observed: 4.68 ft at 7:30PM May 17, 2024Observed: 4.67 ft at 7:45PM May 17, 2024Observed: 4.66 ft at 8:00PM May 17, 2024Observed: 4.65 ft at 8:15PM May 17, 2024Observed: 4.64 ft at 8:30PM May 17, 2024Observed: 4.62 ft at 8:45PM May 17, 2024Observed: 4.61 ft at 9:00PM May 17, 2024Observed: 4.6 ft at 9:15PM May 17, 2024Observed: 4.59 ft at 9:30PM May 17, 2024Observed: 4.58 ft at 9:45PM May 17, 2024Observed: 4.57 ft at 10:00PM May 17, 2024Observed: 4.56 ft at 10:15PM May 17, 2024Observed: 4.55 ft at 10:30PM May 17, 2024Observed: 4.54 ft at 10:45PM May 17, 2024Observed: 4.52 ft at 11:00PM May 17, 2024Observed: 4.51 ft at 11:15PM May 17, 2024Observed: 4.5 ft at 11:30PM May 17, 2024Observed: 4.49 ft at 11:45PM May 17, 2024Observed: 4.48 ft at 12:00AM May 18, 2024Observed: 4.47 ft at 12:15AM May 18, 2024Observed: 4.46 ft at 12:30AM May 18, 2024Highest Forecast: 4.5 ft 2:00AM May 18, 2024Forecast: 4.3 ft 8:00AM May 18, 2024Forecast: 4.2 ft 2:00PM May 18, 2024Forecast: 4 ft 8:00PM May 18, 2024Forecast: 3.9 ft 2:00AM May 19, 2024Forecast: 3.8 ft 8:00AM May 19, 2024Forecast: 3.7 ft 2:00PM May 19, 2024Forecast: 3.6 ft 8:00PM May 19, 2024Forecast: 3.6 ft 2:00AM May 20, 2024Forecast: 3.5 ft 8:00AM May 20, 2024USGS--Water Resources of the United StatesSIMC3(plotting HGIRG) Graph Created (1:45AM May 18, 2024)ObservedForecast (issued 11:25AM May 17)Latest observed value: 4.46 ft at 12:30 AM EDT 18-May-2024. Flood Stage is 12 ft
Printable Image
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) 13.67 ft on 01/11/2024
(2) 13.92 ft on 12/20/2023
(3) 13.97 ft on 10/01/2023
(4) 14.38 ft on 09/03/2021
(5) 13.81 ft on 06/15/2013
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 Tillotson 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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