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SwedenNorth Prong St. Marys River at Moniac water level
River gauge, North Prong St. Marys River, Florida, United States
Right now
Normal for mid-October
Water level
- Flow
- 75.6 cfs
History
What this means
Water levels are unremarkable at North Prong St. Marys River at Moniac, where the gauge shows 6.69 ft.
The median for mid-October is 5.40 ft, based on 78 years of readings, so the river stage is 1.29 ft above typical. It is 5.31 ft below the flood stage of 12.00 ft. On the same day last year the reading was 3.74 ft, a difference of +2.95 ft.
It is still going down, by 0.28 ft over the past 24 hours. The 30-day range is 4.26 ft – 9.30 ft.
Fall is often low-water season on rivers, until steadier rain returns.
Compared with 78 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 5.40 ft1.29 ft above the median for this date
- Normal for this date
- 4.33 ft – 8.26 ft8 years in 10 fall in this range (78 years of records)
- Same day last year
- 3.74 ft+2.95 ft
- Lowest and highest in 30 days
- 4.26 ft – 9.30 ft
- Lowest and highest in 12 months
- 3.68 ft – 9.30 ft
- Highest on record
- 22.98 ftApril 5, 1973
Paddling and fishing conditions
Most paddlers and anglers will find the river in good shape at this stage.
For reference, flood stage is 12.00 ft.
What happens at each level
- 17.00 ft
- Trailers and houses on both sides of the river become endangered.
- 15.00 ft
- Flooding begins to impact Mocassin Creek Circle on Florida side with some portions of the road becoming cut-off. Access roads on both sides of the river in Florida and Georgia begin to flood.
- 14.00 ft
- Bethea State Forest campground sites completely flooded on Florida side and water begins to enter campground parking lot.
- 12.00 ft
- Bethea State Forest campground sites begin to flood on the Florida side just north of the gage.
- 6.69 ft
- Right now
Impact statements from the U.S. National Weather Service.
Highest crests on record
| Rank | Level | Date |
|---|---|---|
| 1 | 22.98 ft | April 5, 1973 |
| 2 | 19.90 ft | September 19, 1928 |
| 3 | 19.15 ft | August 24, 2008 |
| 4 | 18.69 ft | June 28, 2012 |
| 5 | 18.41 ft | September 13, 1964 |
| 6 | 17.78 ft | September 9, 2004 |
| 7 | 17.57 ft | March 30, 1970 |
| 8 | 17.51 ft | September 13, 2017 |
| 9 | 17.03 ft | February 18, 1998 |
| 10 | 16.38 ft | September 29, 2004 |
Weather at the gauge
No rain in the last 3 days.
Forecast: Open-Meteo
Map
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| St. Marys River near MacclennyRiver gauge, St. Marys River | 6.03 ft | High | −0.60 ft | 14 mi |
| St Marys River at Ferry Landing near FolkstonRiver gauge, St Marys River | 4.77 ft | Below flood stage | −0.74 ft | 22 mi |
| Suwannee River above FargoRiver gauge, Suwannee River | 9.58 ft | High | −0.29 ft | 23 mi |
| Suwannee River at US 441, at FargoRiver gauge, Suwannee River | 7.56 ft | High | −0.29 ft | 23 mi |
| Thomas Creek at Sh 115 near CallahanRiver gauge, Thomas Creek | 12.28 ft | Very high | −0.30 ft | 28 mi |
| Trout River near Jacksonville FlaTidal gauge, Trout River | 0.78 ft | Below flood stage | −0.86 ft | 33 mi |
| Suwannee River at White SpringsRiver gauge, Suwannee River | 56.17 ft | Very high | −0.16 ft | 33 mi |
| Cedar River at San Juan Avenue at JacksonvilleTidal gauge, Cedar River | 12.87 ft | High | +0.14 ft | 33 mi |
Questions and answers
Is the North Prong St. Marys River at Moniac higher than last year?
Yes, it is 2.95 ft higher than on the same day last year, when the reading was 3.74 ft.
What is flood stage for the North Prong St. Marys River at Moniac?
The official flood stage is 12.00 ft. The level is currently 5.31 ft below it.
What is a normal level for the North Prong St. Marys River at Moniac in mid-October?
The median for mid-October is 5.40 ft. In 8 years out of 10 the reading falls between 4.33 ft and 8.26 ft, based on 78 years of records.
Is gage height the same as water depth?
No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.
What is the water level of North Prong St. Marys River at Moniac today?
On Oct 19, 2026, 12:45 PM EDT, the water level was 6.69 ft. Down 0.28 ft over the last 24 hours.
Is North Prong St. Marys River at Moniac rising or falling?
Down 0.28 ft over the last 24 hours. Down 2.33 ft over the last 7 days.
Is the level of North Prong St. Marys River at Moniac normal?
Normal for mid-October. Compared with 78 years of daily readings for this time of year.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:02228500(Agency page)- Coordinates
30.51773, -82.23040(WGS84)- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 6.69 ft | 2026-10-19 16:45 | Provisional |
| Flow | 75.6 cfs | 2026-10-19 16:45 | Provisional |
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How to cite
U.S. Geological Survey: North Prong St. Marys River at Moniac (usgs:02228500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/florida/north-prong-st-marys-river-at-moniac
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer