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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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About this graph
Forecasts for the Unadilla River at Rockdale are issued routinely year-round.

Vertical datum height surveyed by the USGS

Return to Area Map

Zoom Level:15
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 11
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 14.22 ft on 09/08/2011
(2) 13.96 ft on 06/29/2006
(3) 12.98 ft on 12/31/1942
(4) 12.64 ft on 03/14/1977
(5) 12.62 ft on 03/26/1979
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 14.22 ft on 09/08/2011
(2) 13.96 ft on 06/29/2006
(3) 11.83 ft on 04/04/2005
(4) 11.04 ft on 04/10/2001
(5) 11.81 ft on 02/28/2000
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
KML Image
Gauge LocationGauge Map Marker
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
14.22 Record flood event of september 2011. Widespread and severe flood inundation occurred to residences and businesses along the river. Millions of dollars in damage were reported.
13.96 Flood level of June 2006. Flooding was widespread and severe with water several feet deep in many locations near the river along Route 8 from Mount Upton to Sidney.
13 Major flood stage. Much of Route 8 is flooded north and south of Rockdale including several residences and businesses. Flooding threatens residences in Mount Upton along Bridge Street. Damages at this stage are typically severe.
12.6 Numerous cellars along the river are flooded.
12 Moderate flood stage. Several homes and businesses are flooded in various spots along Route 8 between Rockwells Mills and Sidney. Flooding reaches properties and residences on County Route 1 at Rockdale. Hitching Post Lane floods. Residences on County Road 1B and the lower parts of Tall Pines Campground are flooded.
11 Flood stage. Widespread flooding of farmland occurs along the river. County Route 8 at the intersection of High Bridge Road is flooded.
(1) looking upstream
(2) view of gagehouse
(3) looking downstream

Other Real-time and/or Archive Data Sources:

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.

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
Binghamton Weather Forecast Office
32 Dawes Drive
Johnson City, NY 13790
(607) 729-1597
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Page last modified: 2-Nov-2020 7:30 PM
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