Arkansas River at Ralston, OK
USGS Site No: 07152500 • Arkansas River • Pawnee County, OK
Arkansas River at Ralston, OK on the Arkansas River is currently at 1,890 cfs (Normal — 60th percentile for this date) . Gage height: 4.55 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 231 | |
| 25th | Low threshold | 398 | |
| 50th (Median) | Normal (median) | 1,030 | |
| 75th | High threshold | 3,260 | Today: 1,890 cfs |
| 95th | Very High threshold | 12,600 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 29, 2026 | 1,950 | — |
| May 28, 2026 | 2,090 | — |
| May 27, 2026 | 1,580 | — |
| May 26, 2026 | 1,590 | — |
| May 25, 2026 | 1,810 | — |
| May 24, 2026 | 2,050 | — |
| May 23, 2026 | 1,830 | — |
| May 22, 2026 | 1,650 | — |
| May 21, 2026 | 1,530 | — |
| May 20, 2026 | 1,390 | — |
| May 19, 2026 | 1,340 | — |
| May 18, 2026 | 1,300 | — |
| May 17, 2026 | 1,310 | — |
| May 16, 2026 | 1,340 | — |
| May 15, 2026 | 1,330 | — |
| Apr 21, 2026 | 5,300 | — |
| Apr 20, 2026 | 5,530 | — |
| Apr 19, 2026 | 5,790 | — |
| Apr 18, 2026 | 5,110 | — |
| Apr 17, 2026 | 1,420 | — |
| Apr 16, 2026 | 1,400 | — |
| Apr 15, 2026 | 1,680 | — |
| Apr 14, 2026 | 2,720 | — |
| Apr 13, 2026 | 1,260 | — |
| Apr 12, 2026 | 1,180 | — |
| Apr 11, 2026 | 1,580 | — |
| Apr 10, 2026 | 2,960 | — |
| Apr 9, 2026 | 4,890 | — |
| Apr 8, 2026 | 5,260 | — |
| Apr 7, 2026 | 5,400 | — |
Station Information
- USGS Site No
- 07152500
- State
- OK
- County
- Pawnee County
- Coordinates
- 36.5042, -96.7284
- Drainage Area
- 54,208 mi²
- Datum (ft)
- 777.3
- HUC Code
- 11060006
Flood Stage Thresholds
- Action Stage
- 16.0 ft
- Flood Stage
- 16.0 ft
- Moderate Flood
- 18.0 ft
- Major Flood
- 21.0 ft
Currently 11.45 ft below flood stage.
Recent Extremes
- Max discharge
-
72,100 cfsJun 18, 2025
- Min discharge
-
292 cfsNov 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Black Bear Creek at Pawnee, OKHigh11.8 mi · 104 cfs
-
Hominy Creek Near Hominy, OKNormal19.5 mi · 3 cfs
-
Bird Creek at Sh 99 at Pawhuska, OKVery High25.6 mi · 66 cfs
-
Salt Fork Arkansas River at Tonkawa, OKHigh34.3 mi · 779 cfs
-
Chikaskia River Near Blackwell, OKHigh37.1 mi · 491 cfs