River stage
Ralston, Arkansas River
- River level
- 3.27 ft
- Status
- Below flood stage
- 7-day change
- -0.69 ft
- Recent high
- 15.44 ft
- Recent low
- 3.30 ft
Last reported 2026-10-13 | NWS RLSO2
- 30-day change
- -0.54 ft
- Average
- 5.93 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 23.00 ft
In brief
The Arkansas River at Ralston, OK read 3.27 ft on Oct 13, 2026, 12.73 ft below action stage. That is 0.54 ft lower than 30 days earlier.
Source: National Weather Service gauge RLSO2
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 23.00 ft | 1923-06-11 |
| 2 | 22.98 ft | 1973-10-13 |
| 3 | 22.82 ft | 1944-04-25 |
| 4 | 22.60 ft | 1964-11-18 |
| 5 | 22.60 ft | 1964-11-15 |
| 6 | 22.20 ft | 1986-10-04 |
| 7 | 22.14 ft | 2019-05-23 |
| 8 | 22.03 ft | 2019-05-26 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 16.00 ft
minor agricultural flooding occurs on the north bank.
- 18.00 ft
moderate inundation of farmlands occurs mainly along the north bank.
- 20.00 ft
severe agricultural flooding occurs. The levee around the Ralston sewage treatment plant may need to be patrolled.
- 21.00 ft
severe agricultural flooding occurs. Water levels need to be patrolled as the levees around the Ralston sewage treatment plant are topped when the stage reaches 24 feet. This is a dangerous situation.
- 22.00 ft
severe agricultural flooding occurs. Water levels are within 2 feet of topping the Ralston sewage treatment levees when the stage reaches 22 feet. This is a dangerous situation.
- 24.00 ft
very severe flooding occurs. The Ralston sewage treatment plant levees may be overtopped when the stage reaches 24 feet. This is an extremely dangerous and life threatening situation.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Arkansas River flooding at Ralston?
No. The Arkansas River at Ralston is at 3.27 ft, 12.73 ft below action stage.
What is the flood stage at Ralston?
The National Weather Service sets action stage 16 ft, minor flooding 16 ft, moderate flooding 18 ft and major flooding 21 ft.
What is the highest the Arkansas River has been at Ralston?
The highest crest on record is 23.0 ft, on 1923-06-11.
Is the Arkansas River high or low right now at Ralston?
At 3.27 ft it is higher than 0% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge RLSO2); daily history from the U.S. Geological Survey (site 07152500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.