Seneca Lake at Geneva

Highest listed crest 448.95 ftFlood stage 448.0 ft3 crests since 1972

The Seneca Lake at Geneva crested above flood stage 2 times among the 3 crests the National Weather Service lists from 1972 to 2021. The highest, 448.95 ft on April 26, 1993, was moderate flooding, 0.95 feet above flood stage.

The gauge

Highest listed crest: 448.95 ft; April 26, 1993; 9,999 cubic feet per second
Flood stage: 448.0 ft; Major flooding from 449.0 ft
Crests at major: 0; 2 above flood stage
Most recent flood crest: April 26, 1993; 448.95 ft, moderate flooding
Location: Seneca County; Near Geneva (2.1 mi)
Identifiers: NWS GNVN6; No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Seneca Lake at Geneva

Action stage	447.5	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	448.0	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	448.5	2	Apr 26, 1993	Some inundation of structures and roads near the stream
Major flood stage	449.0	0	—	Extensive inundation of structures and roads

Every listed crest

3 crests from 1972 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Seneca Lake at Geneva

1	Apr 26, 1993	448.95	+0.95	Moderate	9,999
2	Jun 25, 1972	448.85	+0.85	Moderate	9,999
3	Oct 31, 2021	447.00	−1.00	Below flood stage	9,999

Seneca County: every hazard · River floods across the country · New York

NOAA National Water Prediction Service, gauge GNVN6, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.