Big Sioux River Near Dell Rapids, SD
USGS Site No: 06481000 • Big Sioux River • Minnehaha County, SD
Big Sioux River Near Dell Rapids, SD on the Big Sioux River is currently at 288 cfs (Normal — 71th percentile for this date) . Gage height: 3.98 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 | 17 | |
| 25th | Low threshold | 43 | |
| 50th (Median) | Normal (median) | 93 | |
| 75th | High threshold | 325 | Today: 288 cfs |
| 95th | Very High threshold | 1,260 |
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 | 320 | — |
| May 27, 2026 | 338 | — |
| May 26, 2026 | 346 | — |
| May 25, 2026 | 351 | — |
| May 24, 2026 | 324 | — |
| May 23, 2026 | 324 | — |
| May 22, 2026 | 315 | — |
| May 21, 2026 | 295 | — |
| May 20, 2026 | 299 | — |
| May 19, 2026 | 308 | — |
| May 18, 2026 | 319 | — |
| May 17, 2026 | 336 | — |
| May 16, 2026 | 356 | — |
| May 15, 2026 | 367 | — |
| Apr 20, 2026 | 533 | — |
| Apr 19, 2026 | 556 | — |
| Apr 18, 2026 | 570 | — |
| Apr 17, 2026 | 559 | — |
| Apr 16, 2026 | 553 | — |
| Apr 15, 2026 | 542 | — |
| Apr 14, 2026 | 531 | — |
| Apr 13, 2026 | 550 | — |
| Apr 12, 2026 | 553 | — |
| Apr 11, 2026 | 566 | — |
| Apr 10, 2026 | 566 | — |
| Apr 9, 2026 | 574 | — |
| Apr 8, 2026 | 568 | — |
| Apr 7, 2026 | 572 | — |
| Apr 6, 2026 | 569 | — |
| Apr 5, 2026 | 565 | — |
Station Information
- USGS Site No
- 06481000
- State
- SD
- County
- Minnehaha County
- Coordinates
- 43.7905, -96.7453
- Drainage Area
- 3,927 mi²
- Datum (ft)
- 1,456.9
- HUC Code
- 101702030605
Flood Stage Thresholds
- Action Stage
- 11.0 ft
- Flood Stage
- 12.0 ft
- Moderate Flood
- 14.0 ft
- Major Flood
- 15.0 ft
Currently 8.02 ft below flood stage.
Recent Extremes
- Max discharge
-
3,180 cfsJul 5, 2025
- Min discharge
-
183 cfsJun 16, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Skunk Creek Near Chester,sdVery Low6.1 mi · 0 cfs
-
Split Rock Creek at Corson, SDNormal15.0 mi · 17 cfs
-
Big Sioux River at North Cliff Ave at Sioux Falls,sdNormal15.5 mi · 302 cfs
-
Skunk Creek at Sioux Falls,sdNormal17.9 mi · 12 cfs
-
Big Sioux River at Sioux Falls SDLow20.0 mi · 34 cfs