TidalMapImperial River near Bonita Springs, FL Water Level Today
NWS river forecast
| When | Stage | Flow |
|---|
Forecast from the NOAA National Water Prediction Service. Issued a few times a day and only while a forecast is active. Not for navigation.
Last 30 days
About this gauge
USGS gauge 02291500 sits on the Imperial River in the Big Cypress Swamp basin. Daily flow has been on record here since 1940, 53 years of it.
Normal flows here
The Imperial River runs a median of 17 cfs at this gauge across 53 years of record. September is the fullest month at a median 236 cfs, and May the leanest at 7.7 cfs. The highest daily mean on record is 2,890 cfs in 1940, and the lowest is 0.0 cfs in 1940.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 16 cfs | 94% |
| Feb | 14 cfs | 82% |
| Mar | 12 cfs | 71% |
| Apr | 9.6 cfs | 57% |
| May | 7.7 cfs | 45% |
| Jun | 10 cfs | 59% |
| Jul | 62 cfs | 365% |
| Aug | 176 cfs | 1035% |
| Sep | 236 cfs | 1391% |
| Oct | 179 cfs | 1053% |
| Nov | 37 cfs | 218% |
| Dec | 18 cfs | 106% |
Medians from the USGS daily-statistics record, 1940 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
The Imperial River reaches flood stage at this gauge at 11 feet. NWS starts watching it at 10 feet. The highest crest on record is 15.3 feet, in September 2017.
| Category | Gage height |
|---|---|
| Action | 10 ft |
| Minor flooding | 11 ft |
| Moderate flooding | 12 ft |
| Major flooding | 14 ft |
| When | Crest |
|---|---|
| September 2017 | 15.3 ft |
| October 2022 | 12.3 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge BSIF1. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Spring Creek Headwater near Bonita Springs, FL
- South Branch Estero River at Estero, FL
- North Branch Estero River at Estero, FL
- Sixmile Cypress Creek near Fort Myers, FL
- Whiskey Creek at Ft Myers, FL
- Caloosahatchee River at S-79, Nr.olga, Fla
- Jacks Branch at Creek 78 near Ft Denaud FL
- Shell Creek at Circle K Groves near Ft Ogden FL
- Turner River near Chokoloskee Island, FL
- Shell Creek on Creek 764 near Punta Gorda FL
- Prairie Creek on Creek 764 near Punta Gorda FL
- Shell Creek near Punta Gorda FL
Live streamflow and gage height: USGS gauge 02291500. Percentile context computed against the gauge's period of record. Not for navigation.
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