Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 988.30 ft | 2006-06-28 |
| 2 | 987.36 ft | 2011-09-09 |
Flood crests recorded at this gauge by the National Weather Service.
River stage
Sidney, Susquehanna River
- River level
- 969.60 ft
- Status
- Below flood stage
- Action stage
- 975.50 ft
- Flood stage
- 979.50 ft
- Record crest
- 988.30 ft
Last reported 2026-10-13 | NWS SIDN6
- Record crest
- 988.30 ft
- Flood stage
- 979.50 ft
- Moderate flood
- 981.50 ft
- Major flood
- 983.70 ft
- Crest date
- 2006-06-28
In brief
The Susquehanna River at Sidney, NY read 969.60 ft on Oct 13, 2026, 5.90 ft below action stage.
Source: National Weather Service gauge SIDN6
Stage threshold profile
What happens at each level
- 978.50 ft
Water reaches the bridge deck at Keith Clark Park.
- 979.50 ft
Minor flooding begins to impact the ball fields and trails at Keith Clark Park, and buildings on Willow Street Extension in Sidney.
- 980.80 ft
Street level to first floor flooding occurs on Railroad Avenue, Colgrove Street and the lower portions of River Street in Sidney.
- 981.50 ft
Moderate flood stage. Water is 2 to 3 feet deep on Willow Street Extension. The NYSEG substation and Frontier telephone buildings flood.
- 982.00 ft
Flooding increases to all of River, Walnut, Camp, and Winegard streets along with Maple and Oak avenues.
- 983.70 ft
Major flooding develops with flood waters reaching the American Legion Adams, Gilbert, Weir and Union Streets.
- 984.60 ft
Amphenol begins to flood at this stage.
- 985.00 ft
The Waste Water Treatment plant is impacted by flood waters. Sherman Avenue, Bridge Street, Willow Street and Cross Street flood.
- 985.30 ft
Liberty Street and Pleasant Street are flooded.
- 985.90 ft
Central Fire Station begins to take on water. Clinton Street, Grand Street and Avery Street flood.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Susquehanna River flooding at Sidney?
No. The Susquehanna River at Sidney is at 969.6 ft, 5.9 ft below action stage.
What is the flood stage at Sidney?
The National Weather Service sets action stage 975.5 ft, minor flooding 979.5 ft, moderate flooding 981.5 ft and major flooding 983.7 ft.
What is the highest the Susquehanna River has been at Sidney?
The highest crest on record is 988.3 ft, on 2006-06-28.
Stage and flood information from the NOAA National Weather Service (gauge SIDN6). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.