Imperial River near Bonita Springs

Highest listed crest 15.32 ftFlood stage 11.0 ft2 crests since 2017

The Imperial River near Bonita Springs crested at major flood stage 1 time among the 2 crests the National Weather Service lists from 2017 to 2022. The highest, 15.32 ft on September 12, 2017, was major flooding, 4.32 feet above flood stage.

The gauge

Highest listed crest: 15.32 ft; September 12, 2017; 4,260 cubic feet per second
Flood stage: 11.0 ft; Major flooding from 14.0 ft
Crests at major: 1; 107th of 237 gauges in Florida
Most recent flood crest: October 2, 2022; 12.32 ft, moderate flooding
Location: Lee County; Near Bonita Springs (2.5 mi), Estero (7.0 mi), Naples (13.1 mi)
Identifiers: NWS BSIF1; USGS 02291500

Flood stages

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

Flood categories, Imperial River near Bonita Springs

Action stage	10.0	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	11.0	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	12.0	1	Oct 2, 2022	Some inundation of structures and roads near the stream
Major flood stage	14.0	1	Sep 12, 2017	Extensive inundation of structures and roads

Every listed crest

2 crests from 2017 to 2022. 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, Imperial River near Bonita Springs

1	Sep 12, 2017	15.32	+4.32	Major	4,260
2	Oct 2, 2022	12.32	+1.32	Moderate	821

Other gauges in Lee County

Flood gauges in Lee County

Tide Gauge at Fort Myers (in MHHW)	2.0	7.26 ft, Sep 28, 2022	2

Lee County: every hazard · River floods across the country · Florida

NOAA National Water Prediction Service, gauge BSIF1, 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.