USGS Streamgage 14038530
John Day River near John Day, OR
John Day River near John Day, OR is USGS streamgage 14038530 in Oregon, monitoring river discharge in hydrologic subbasin 17070201. It drains a watershed of about 386 square miles. Discharge records at this site go back to 1968. Typical flow runs near 71.6 cfs in July and 324.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 386 sq mi
- Subbasin (HUC-8)
- 17070201
- Coordinates
- 44.41849, -118.90634
- USGS site number
- 14038530
- Records begin
- 1968-10-01 (58 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 58 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 | 93.4 | 136.1 | 358.1 | |
| February | 105.7 | 171.1 | 383.9 | |
| March | 128.4 | 248.3 | 547.9 | |
| April | 172.2 | 324.5 | 591.5 | |
| May | 166.5 | 405.2 | 818.1 | |
| June | 96.6 | 253.5 | 593 | |
| July | 35.1 | 71.6 | 196.3 | |
| August | 13.9 | 31.3 | 72.4 | |
| September | 24.6 | 44.3 | 85.7 | |
| October | 70.1 | 91.1 | 123.6 | |
| November | 86.5 | 109.9 | 164.2 | |
| December | 89.2 | 120.2 | 246.8 |
All values in cubic feet per second (cfs).