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This probabilistic forecast is issued by the Northeast River Forecast Center.
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About this graph
Forecasts for the Mohawk River at Delta Dam are issued routinely year-round.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 554
Moderate Flood Stage: 553
Flood Stage: 551.5
Action Stage: 549
Low Stage (in feet): -9999

Historic Crests
(1) 553.76 ft on 08/19/2021 (P)
(2) 553.25 ft on 05/24/2004
(3) 553.00 ft on 11/01/2019
(4) 552.90 ft on 04/28/2011
(5) 552.80 ft on 06/22/1972
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(P): Preliminary values subject to further review.

Recent Crests
(1) 553.76 ft on 08/19/2021 (P)
(2) 553.00 ft on 11/01/2019
(3) 551.80 ft on 05/07/2017
(4) 552.60 ft on 04/07/2017
(5) 552.45 ft on 04/05/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 492.00 ft on 03/02/1959
(2) 520.60 ft on 04/02/1971
(3) 522.20 ft on 03/15/1978
(4) 523.00 ft on 11/27/1980
(5) 523.30 ft on 02/24/1980
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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
554 Major flood stage.
553 Moderate flood stage. There is flooding downstream between the dam and Rome.
552.5 Two and a half feet of water are spilling over and the river begins to overflow its banks downstream.
552 Two feet of water are spilling over and there is minor flooding of lowlands below Lake Delta.
551.5 Minor flood stage. During the navigation season the Erie Canal may close due to high water.
551 A foot of water is spilling over the Delta Dam spillway.
550.5 Six inches of water are spilling over the Delta Dam spillway.
550 Water is level with the spillway. When the lake rises above this level the gates are usually closed.
549 Action stage.
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
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Albany, NY 12222
(518) 626-7570
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Page last modified: 2-Nov-2020 7:30 PM
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