USGS Streamgage 13215480
South Fork Malheur River near Riverside, OR
South Fork Malheur River near Riverside, OR is USGS streamgage 13215480 in Oregon, monitoring river discharge in hydrologic subbasin 17050116. It drains a watershed of about 697 square miles. Discharge records at this site go back to 2024. Typical flow runs near 4 cfs in July and 88.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 697 sq mi
- Subbasin (HUC-8)
- 17050116
- Coordinates
- 43.51908, -118.17506
- USGS site number
- 13215480
- Records begin
- 2024-02-14 (2 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 2 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 | — | 169.2 | — | |
| February | — | 345.9 | — | |
| March | — | 304.5 | — | |
| April | — | 88.5 | — | |
| May | — | 19.2 | — | |
| June | — | 8.3 | — | |
| July | — | 4 | — | |
| August | — | 4.5 | — | |
| September | — | 8.1 | — | |
| October | — | 15 | — | |
| November | — | 21.1 | — | |
| December | — | 113.4 | — |
All values in cubic feet per second (cfs).