Seneca Lake at Geneva
New York — Water Level & Flood Stage
Located in Seneca County, New York on the Seneca Lake. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: GNVN6). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
449 ft
Moderate Flood
448.5 ft
Minor Flood
448 ft
Action Stage
447.5 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
449.9 ft
This is the approximate level of the 1% annual chance flood, otherwise known as the 100-year flood. Widespread flooding would bring catastrophic damage to properties along most of the lake shore.
449 ft
Major flooding occurs. Water would inundate most properties along the shore, likely reaching residential and commercial structures in some areas. Travel near and around the lake would become nearly impossible. Severe erosion and damage to seawalls and docks is to be expected during days with strong winds. Boating is likely to be forbidden.
448.95 ft
This is the record high level set on April 26, 1993 after the much above normal winter snow season and Spring rainfall.
448.85 ft
This is the high water level from the June 25, 1972 Hurricane Agnes flood.
448.5 ft
Moderate flooding develops. Water would inundate at least 50 percent of the properties along the shore. Some residential and commercial structures would be affected. Travel near and around the lake would become extremely difficult. Damage to seawalls and docks would occur on days with moderate winds. Boating restrictions are likely.
448 ft
The lake at this level will flood normally dry areas along the shoreline which may include the flooding of paths or roads nearest the shore. Docks may be lifted and destroyed by moderate wind wave conditions. Seawalls may also be damaged by wave action. Boating restrictions are possible.
447.5 ft
The lake level is high enough to lift and damage docks and cause shoreline erosion, especially during times of light to moderate wind driven wave action. No-wake boater restrictions are possible.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Apr 25, 1993 | 448.95 ft | 9,999 cfs |
| Apr 25, 1993 | 448.95 ft | 9,999 cfs |
| Jun 24, 1972 | 448.85 ft | 9,999 cfs |
| Jun 24, 1972 | 448.85 ft | 9,999 cfs |
| Oct 30, 2021 | 447 ft | 9,999 cfs |
About This Gauge
NWS LID
GNVN6
River
Seneca Lake
County
Seneca, NY
Coordinates
42.8680°N, 76.9410°W
Get Flood Alerts for Seneca Lake
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Seneca Lake at Geneva?
The Seneca Lake at Geneva gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Seneca Lake at Geneva?
The NWS-defined flood stage for Seneca Lake at Geneva is 448 feet. Action stage begins at 447.5 feet. Moderate flooding starts at 448.5 feet, and major flooding at 449 feet.
How do I get alerts when Seneca Lake rises?
Download StormCast free on Google Play, go to River Gauges, and add Seneca Lake at Geneva to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Seneca Lake at Geneva gauge located?
The gauge is located in Seneca County, New York at coordinates 42.8680°N, 76.9410°W. Data is provided by the U.S. Geological Survey and the National Weather Service.