USGS Streamgage 06483500
Rock River near Rock Valley, IA
Rock River near Rock Valley, IA is USGS streamgage 06483500, monitoring river discharge in hydrologic subbasin 10170204. It drains a watershed of about 1,592 square miles. Discharge records at this site go back to 1897. Typical flow runs near 301.9 cfs in July and 577.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 1,592 sq mi
- Gauge elevation
- 1,229 ft
- Subbasin (HUC-8)
- 10170204
- Coordinates
- 43.21508, -96.29503
- USGS site number
- 06483500
- Records begin
- 1897-01-01 (129 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 78 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 | 7.3 | 52.3 | 420.6 | |
| February | 8 | 92.3 | 705.4 | |
| March | 50.4 | 406.5 | 2,897.1 | |
| April | 127.9 | 577.5 | 3,570 | |
| May | 98.5 | 495.5 | 2,213.5 | |
| June | 78.2 | 542.1 | 2,981 | |
| July | 42.3 | 301.9 | 1,560.8 | |
| August | 28.4 | 145.9 | 789.2 | |
| September | 21.5 | 103.1 | 815.2 | |
| October | 23.3 | 109.3 | 1,124.4 | |
| November | 28.5 | 123.3 | 878.5 | |
| December | 16.1 | 86.5 | 647.5 |
All values in cubic feet per second (cfs).