Mississippi River at Thebes, IL
USGS Site No: 07022000 • Mississippi River • Alexander County, IL
Mississippi River at Thebes, IL on the Mississippi River is currently at 275,000 cfs (High — 83th percentile for this date) . Gage height: 21.98 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 | 72,000 | |
| 25th | Low threshold | 93,300 | |
| 50th (Median) | Normal (median) | 123,000 | |
| 75th | High threshold | 185,000 | |
| 95th | Very High threshold | 402,000 | Today: 275,000 cfs |
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 | 303,000 | — |
| May 27, 2026 | 330,000 | — |
| May 26, 2026 | 363,000 | — |
| May 25, 2026 | 397,000 | — |
| May 24, 2026 | 417,000 | — |
| May 23, 2026 | 413,000 | — |
| May 22, 2026 | 382,000 | — |
| May 21, 2026 | 322,000 | — |
| May 20, 2026 | 255,000 | — |
| May 19, 2026 | 232,000 | — |
| May 18, 2026 | 240,000 | — |
| May 17, 2026 | 257,000 | — |
| May 16, 2026 | 269,000 | — |
| May 15, 2026 | 279,000 | — |
| Apr 20, 2026 | 442,000 | — |
| Apr 19, 2026 | 416,000 | — |
| Apr 18, 2026 | 402,000 | — |
| Apr 17, 2026 | 382,000 | — |
| Apr 16, 2026 | 350,000 | — |
| Apr 15, 2026 | 334,000 | — |
| Apr 14, 2026 | 329,000 | — |
| Apr 13, 2026 | 330,000 | — |
| Apr 12, 2026 | 334,000 | — |
| Apr 10, 2026 | 348,000 | — |
| Apr 9, 2026 | 354,000 | — |
| Apr 8, 2026 | 371,000 | — |
| Apr 7, 2026 | 390,000 | — |
| Apr 6, 2026 | 369,000 | — |
| Apr 5, 2026 | 295,000 | — |
| Apr 4, 2026 | 226,000 | — |
Station Information
- USGS Site No
- 07022000
- State
- IL
- County
- Alexander County
- Coordinates
- 37.2203, -89.4632
- Drainage Area
- 713,200 mi²
- Datum (ft)
- 299.7
- HUC Code
- 07140105
Flood Stage Thresholds
- Action Stage
- 30.0 ft
- Flood Stage
- 33.0 ft
- Moderate Flood
- 37.0 ft
- Major Flood
- 42.0 ft
Currently 11.02 ft below flood stage.
Recent Extremes
- Max discharge
-
447,000 cfsApr 24, 2025
- Min discharge
-
77,000 cfsDec 19, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
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Big Creek Near Wetaug, ILUnknown19.4 mi
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Ohio River at Olmsted, ILVery High22.5 mi · 515,000 cfs
-
Little River Ditch north. 1 Near Morehouse, MONormal30.4 mi · 144 cfs
-
Cache River at Forman, ILNormal30.6 mi · 3 cfs
-
Castor River at Zalma, MONormal34.1 mi · 147 cfs