Ohio River at Olmsted, IL
USGS Site No: 03612600 • Ohio River • Pulaski County, IL
Ohio River at Olmsted, IL on the Ohio River is currently at 515,000 cfs (Very High — 95th percentile for this date) . Gage height: 31.03 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 | 61,400 | |
| 25th | Low threshold | 100,000 | |
| 50th (Median) | Normal (median) | 156,000 | |
| 75th | High threshold | 172,000 | |
| 95th | Very High threshold | 0 |
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 28, 2026 | 512,000 | — |
| May 27, 2026 | 469,000 | — |
| May 26, 2026 | 397,000 | — |
| May 25, 2026 | 342,000 | — |
| May 24, 2026 | 281,000 | — |
| May 23, 2026 | 238,000 | — |
| May 22, 2026 | 206,000 | — |
| May 21, 2026 | 157,000 | — |
| May 20, 2026 | 140,000 | — |
| May 19, 2026 | 144,000 | — |
| May 18, 2026 | 138,000 | — |
| May 17, 2026 | 133,000 | — |
| May 16, 2026 | 156,000 | — |
| May 15, 2026 | 184,000 | — |
| Apr 20, 2026 | 164,000 | — |
| Apr 19, 2026 | 168,000 | — |
| Apr 18, 2026 | 171,000 | — |
| Apr 17, 2026 | 180,000 | — |
| Apr 16, 2026 | 200,000 | — |
| Apr 15, 2026 | 220,000 | — |
| Apr 14, 2026 | 243,000 | — |
| Apr 13, 2026 | 262,000 | — |
| Apr 12, 2026 | 280,000 | — |
| Apr 11, 2026 | 288,000 | — |
| Apr 10, 2026 | 292,000 | — |
| Apr 7, 2026 | 272,000 | — |
| Apr 6, 2026 | 248,000 | — |
| Apr 5, 2026 | 251,000 | — |
| Apr 4, 2026 | 282,000 | — |
| Apr 3, 2026 | 310,000 | — |
Station Information
- USGS Site No
- 03612600
- State
- IL
- County
- Pulaski County
- Coordinates
- 37.1792, -89.0584
- Drainage Area
- 203,000 mi²
- Datum (ft)
- 278.1
- HUC Code
- 05140206
Flood Stage Thresholds
- Action Stage
- 34.0 ft
- Flood Stage
- 36.0 ft
- Moderate Flood
- 42.0 ft
- Major Flood
- 47.0 ft
Currently 4.97 ft below flood stage.
Recent Extremes
- Max discharge
-
817,000 cfsApr 22, 2025
- Min discharge
-
55,200 cfsSep 21, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
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Big Creek Near Wetaug, ILUnknown10.3 mi
-
Cache River at Forman, ILNormal13.0 mi · 3 cfs
-
Ohio River at Metropolis, ILHigh18.4 mi · 162,276 cfs
-
Mayfield Creek at Lovelaceville, KYHigh20.3 mi · 63 cfs
-
Massac Creek Near Paducah, KYNormal21.4 mi · 2 cfs