USGS Streamgage 06602400
Monona-Harrison Ditch near Turin, IA
Monona-Harrison Ditch near Turin, IA is USGS streamgage 06602400, monitoring river discharge in hydrologic subbasin 10230004. It drains a watershed of about 900 square miles. Discharge records at this site go back to 1940. Typical flow runs near 219 cfs in July and 251.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 900 sq mi
- Gauge elevation
- 1,048 ft
- Subbasin (HUC-8)
- 10230004
- Coordinates
- 41.96492, -95.99175
- USGS site number
- 06602400
- Records begin
- 1940-06-04 (86 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 68 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 | 31.2 | 95.4 | 263.1 | |
| February | 32.7 | 127.1 | 555.8 | |
| March | 64.4 | 214.8 | 1,108.6 | |
| April | 67.9 | 251.7 | 865.1 | |
| May | 79.4 | 280.2 | 982.7 | |
| June | 101.7 | 327.3 | 1,391.8 | |
| July | 67.7 | 219 | 726.4 | |
| August | 46.3 | 147.2 | 451 | |
| September | 41.3 | 129.8 | 397.5 | |
| October | 45 | 117.7 | 436 | |
| November | 44.4 | 125.6 | 359.1 | |
| December | 32.8 | 103.8 | 327.6 |
All values in cubic feet per second (cfs).