USGS Streamgage 13074400
Portneuf River. at Inkom, ID
Portneuf River. at Inkom, ID is USGS streamgage 13074400 in Idaho, monitoring river discharge in hydrologic subbasin 17040208. It drains a watershed of about 1,065 square miles. Discharge records at this site go back to 2024. Typical flow runs near 76.2 cfs in July and 753.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 1,065 sq mi
- Subbasin (HUC-8)
- 17040208
- Coordinates
- 42.79183, -112.25207
- USGS site number
- 13074400
- Records begin
- 2024-04-02 (2 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 1 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 7 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| April | — | 753.8 | — | |
| May | — | 583.5 | — | |
| June | — | 167.7 | — | |
| July | — | 76.2 | — | |
| August | — | 101.3 | — | |
| September | — | 140.4 | — | |
| October | — | 224 | — |
All values in cubic feet per second (cfs).