River stage
Unadilla, Susquehanna River
- River level
- 3.48 ft
- Status
- Below flood stage
- 7-day change
- +0.69 ft
- Recent high
- 7.15 ft
- Recent low
- 2.59 ft
Last reported 2026-10-13 | NWS UNDN6
- 30-day change
- -0.09 ft
- Average
- 3.30 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 17.72 ft
In brief
The Susquehanna River at Unadilla, NY read 3.48 ft on Oct 13, 2026, 5.52 ft below action stage. That is 0.09 ft lower than 30 days earlier.
Source: National Weather Service gauge UNDN6
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 17.72 ft | 2006-06-29 |
| 2 | 16.60 ft | 1936-03-18 |
| 3 | 16.34 ft | 2011-09-09 |
| 4 | 16.00 ft | 1935-07-08 |
| 5 | 14.64 ft | 1977-03-14 |
| 6 | 14.25 ft | 1960-04-04 |
| 7 | 14.24 ft | 1996-01-19 |
| 8 | 14.13 ft | 1977-10-18 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 11.00 ft
Minor flooding begins to impact fields and some properties in Unadilla between Main Street and River Road.
- 13.00 ft
Moderate flood stage. Basement flooding and some first floor dwellings between Main Street and River Road are affected by flooding. This includes properties on Hopkins, Church, Dart and Mill Street.
- 14.50 ft
Major flood stage. Several locations in Unadilla on the south side of Main Street are flooded. Water crosses Route 7 near Hopkins Street and floods homes to the north. Adams, Gilbert, Weir, Union Streets and the American Legion in Sidney are flooded.
- 15.00 ft
Sherman Ave., Bridge St., Willow St., and Cross Street in Sidney are flooded. Amphenol and the Waste Water Treatment Plant in Sidney are flooded.
- 16.00 ft
Severe flooding occurs throughout most of the Village of Unadilla as water spreads toward Railroad Street. Route 7 flooded in many areas. Clinton St., Grand St., and Avery St., along with the fire station in Sidney are flooded.
- 16.30 ft
Widespread severe flooding occurred during the September 2011 flood.
- 17.00 ft
The water treatment building and the Press building in Sidney are inundated.
- 17.50 ft
Main Street in Sidney is flooded up to Smith Street.
- 17.70 ft
This was the record flood of June 2006. Deep flooding was widespread and severe throughout Unadilla.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Susquehanna River flooding at Unadilla?
No. The Susquehanna River at Unadilla is at 3.48 ft, 5.52 ft below action stage.
What is the flood stage at Unadilla?
The National Weather Service sets action stage 9 ft, minor flooding 11 ft, moderate flooding 13 ft and major flooding 14.5 ft.
What is the highest the Susquehanna River has been at Unadilla?
The highest crest on record is 17.72 ft, on 2006-06-29.
Is the Susquehanna River high or low right now at Unadilla?
At 3.48 ft it is higher than 70% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge UNDN6); daily history from the U.S. Geological Survey (site 01500500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.