USGS Streamgage 06483290
Rock River below Tom Creek at Rock Rapids, IA
Rock River below Tom Creek at Rock Rapids, IA is USGS streamgage 06483290, monitoring river discharge in hydrologic subbasin 10170204. It drains a watershed of about 853 square miles. Discharge records at this site go back to 1962. Typical flow runs near 295.3 cfs in July and 409.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 853 sq mi
- Gauge elevation
- 1,337 ft
- Subbasin (HUC-8)
- 10170204
- Coordinates
- 43.42314, -96.16492
- USGS site number
- 06483290
- Records begin
- 1962-03-29 (64 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 25 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 20.8 | 77.1 | 393 | |
| February | 28 | 95.9 | 514.6 | |
| March | 64.7 | 307.7 | 2,697.1 | |
| April | 129.6 | 409.7 | 1,952.3 | |
| May | 140.3 | 544.8 | 1,684.8 | |
| June | 141 | 600 | 2,470.7 | |
| July | 64.6 | 295.3 | 1,434.4 | |
| August | 33.2 | 130.2 | 613.7 | |
| September | 26.1 | 82.2 | 928.1 | |
| October | 30.3 | 108.5 | 1,211.5 | |
| November | 35.6 | 110.5 | 685.9 | |
| December | 26.2 | 100 | 568 |
All values in cubic feet per second (cfs).