Flatrock River at St. Paul, IN
USGS Site No: 03363500 • Flatrock River • Shelby County, IN
Flatrock River at St. Paul, IN on the Flatrock River is currently at 975 cfs (High — 91th percentile for this date) . Gage height: 2.37 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 53 | |
| 25th | Low threshold | 91 | |
| 50th (Median) | Normal (median) | 171 | |
| 75th | High threshold | 308 | |
| 95th | Very High threshold | 1,140 | Today: 975 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 29, 2026 | — | 3.30 |
| May 28, 2026 | 2,730 | 4.31 |
| May 27, 2026 | 1,610 | 2.98 |
| May 26, 2026 | 718 | 1.99 |
| May 25, 2026 | 896 | 2.25 |
| May 24, 2026 | 1,230 | 2.71 |
| May 23, 2026 | 1,320 | 2.84 |
| May 22, 2026 | 1,820 | 3.39 |
| May 21, 2026 | 3,070 | 4.64 |
| May 20, 2026 | 3,640 | 5.09 |
| May 19, 2026 | 2,100 | 3.71 |
| May 18, 2026 | 393 | 1.47 |
| May 17, 2026 | 301 | 1.34 |
| May 16, 2026 | 319 | 1.37 |
| May 15, 2026 | 337 | 1.41 |
| Apr 22, 2026 | — | 0.98 |
| Apr 21, 2026 | 134 | 0.99 |
| Apr 20, 2026 | 143 | 1.01 |
| Apr 19, 2026 | 166 | 1.07 |
| Apr 18, 2026 | 167 | 1.07 |
| Apr 17, 2026 | 165 | 1.06 |
| Apr 16, 2026 | 169 | 1.07 |
| Apr 15, 2026 | 170 | 1.08 |
| Apr 14, 2026 | 175 | 1.09 |
| Apr 13, 2026 | 175 | 1.09 |
| Apr 12, 2026 | 171 | 1.08 |
| Apr 11, 2026 | 179 | 1.10 |
| Apr 10, 2026 | 187 | 1.11 |
| Apr 9, 2026 | 194 | 1.13 |
| Apr 8, 2026 | 201 | 1.14 |
Station Information
- USGS Site No
- 03363500
- State
- IN
- County
- Shelby County
- Coordinates
- 39.4175, -85.6341
- Drainage Area
- 303 mi²
- Datum (ft)
- 764.3
- HUC Code
- 05120205
Flood Stage Thresholds
- Action Stage
- 3.0 ft
- Flood Stage
- 6.0 ft
- Moderate Flood
- 10.0 ft
- Major Flood
- 13.0 ft
Currently 3.63 ft below flood stage.
Recent Extremes
- Max discharge
-
8,930 cfsMar 5, 2026
- Min discharge
-
15 cfsSep 10, 2025
- Days at flood stage
- 3
Computed from the local daily-values archive.
Nearby Gauges
-
Big Blue River at Shelbyville, INHigh10.9 mi · 1,460 cfs
-
Brandywine Creek Near Fairland, INVery High14.6 mi · 254 cfs
-
Sugar Creek Near Boggstown, INVery High19.1 mi · 512 cfs
-
Youngs Creek Near Edinburgh, INHigh19.8 mi · 283 cfs
-
Sugar Creek Near Edinburgh, INHigh19.8 mi · 1,300 cfs