River stage
Lake Harney, St. Johns River
- River level
- 6.59 ft
- Status
- Above action stage
- 7-day change
- +1.62 ft
- Recent high
- 6.56 ft
- Recent low
- 1.03 ft
Last reported 2026-10-13 | NWS GENF1
- 30-day change
- +1.98 ft
- Average
- 2.91 ft
- Readings
- 120
- Data span
- 122 days
- Record crest
- 12.67 ft
In brief
The St. Johns River at Lake Harney, FL read 6.59 ft on Oct 13, 2026, 1.41 ft below minor flood stage. That is 1.98 ft higher than 30 days earlier.
Source: National Weather Service gauge GENF1
At this level: Minor flooding to a few low lying areas along the river.
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 12.67 ft | 2022-10-03 |
| 2 | 11.15 ft | 2008-08-28 |
| 3 | 10.62 ft | 1953-10-13 |
| 4 | 10.52 ft | 2017-09-19 |
| 5 | 10.15 ft | 2024-10-15 |
| 6 | 10.10 ft | 1924-10-01 |
| 7 | 10.08 ft | 2004-10-02 |
| 8 | 9.50 ft | 2004-09-12 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 6.00 ft
No Wake Zones in effect and county parks closed for areas east of Lake Monroe to Lake Harney.
- 6.50 ft
Minor flooding to a few low lying areas along the river.
- 7.00 ft
Water approaches boat ramps, docks in Lake Jesup Park and Mullet Lake Park.
- 7.50 ft
Some docks, islands and small trees along the river north of Lake Harney will be covered with water, making boating hazardous.
- 8.00 ft
Water moves into yards on Prevatt Road off State Road 46 near Lake Harney. Flooding of boat ramps and roads occurs in Mullet Lake Park.
- 8.30 ft
Docks are partially submerged along the river between Lake Harney and Lemon Bluff.
- 8.50 ft
Water surrounds homes on stilts on Prevatt road, entering garages on the first story. Water fills yards and ditches along Whitcomb Drive and Lake Harney Road. Roads flood in the Palm Shores and Mullet Lake areas.
- 8.80 ft
Water covers Whitcomb Road.
- 9.00 ft
Water enters the first story of homes on Whitcomb Drive between Crossover Lane and Lake Harney Road. Water covers Mullet Lake Park.
- 9.30 ft
Many secondary roads are flooded near Lake Harney. Flooding in the Hatbill Road area near Loughman Lake.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the St. Johns River flooding at Lake Harney?
No. The St. Johns River at Lake Harney is at 6.59 ft, 1.41 ft below minor flood stage.
What is the flood stage at Lake Harney?
The National Weather Service sets action stage 6 ft, minor flooding 8 ft, moderate flooding 9 ft and major flooding 10 ft.
What is the highest the St. Johns River has been at Lake Harney?
The highest crest on record is 12.67 ft, on 2022-10-03.
Is the St. Johns River high or low right now at Lake Harney?
At 6.59 ft it is higher than 100% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge GENF1); daily history from the U.S. Geological Survey (site 02234000). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.