TidalMapSt Marks River near Newport, Fla 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 02326900 sits on the St Marks River and reads everything draining 535 square miles of the Apalachee Bay-St. Marks basin. Its datum sits 4 feet above sea level NGVD29. Daily flow has been on record here since 1957, 67 years of it.
Normal flows here
The St Marks River runs a median of 596 cfs at this gauge across 67 years of record. March is the fullest month at a median 666 cfs, and December the leanest at 472 cfs. The highest daily mean on record is 5,820 cfs in 2008, and the lowest is 177 cfs in 2022.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 563 cfs | 95% |
| Feb | 635 cfs | 107% |
| Mar | 666 cfs | 112% |
| Apr | 632 cfs | 106% |
| May | 561 cfs | 94% |
| Jun | 582 cfs | 98% |
| Jul | 605 cfs | 102% |
| Aug | 658 cfs | 110% |
| Sep | 644 cfs | 108% |
| Oct | 549 cfs | 92% |
| Nov | 486 cfs | 82% |
| Dec | 472 cfs | 79% |
Medians from the USGS daily-statistics record, 1957 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
The St Marks River reaches flood stage at this gauge at 8 feet. NWS starts watching it at 7 feet. The highest crest on record is 13.9 feet, in August 2008.
| Category | Gage height |
|---|---|
| Action | 7 ft |
| Minor flooding | 8 ft |
| Moderate flooding | 9 ft |
| Major flooding | 11 ft |
| When | Crest |
|---|---|
| August 2008 | 13.9 ft |
| April 1973 | 11.8 ft |
| March 1991 | 11.2 ft |
| April 1984 | 10.3 ft |
| September 1957 | 10 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge NEPF1. Stages are gage height, not depth. Not for navigation.
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Live streamflow and gage height: USGS gauge 02326900. Percentile context computed against the gauge's period of record. Not for navigation.
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