USGS Streamgage 12392300
Pack River near Colburn, ID
Pack River near Colburn, ID is USGS streamgage 12392300 in Idaho, monitoring river discharge in hydrologic subbasin 17010214. It drains a watershed of about 124 square miles. Discharge records at this site go back to 1958. Typical flow runs near 154.7 cfs in July and 483.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 124 sq mi
- Gauge elevation
- 2,104 ft
- Subbasin (HUC-8)
- 17010214
- Coordinates
- 48.42, -116.50194
- USGS site number
- 12392300
- Records begin
- 1958-09-01 (68 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 67 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 | 46.7 | 113 | 269.7 | |
| February | 56.2 | 133.3 | 419.3 | |
| March | 79.1 | 190.2 | 572 | |
| April | 273.8 | 483.5 | 1,014.5 | |
| May | 551.9 | 1,061.1 | 1,952.6 | |
| June | 227.1 | 676.7 | 1,350.6 | |
| July | 44.5 | 154.7 | 278.6 | |
| August | 21 | 39 | 81.1 | |
| September | 17.7 | 35 | 102.9 | |
| October | 21.7 | 55.9 | 190 | |
| November | 40.4 | 104.7 | 344.2 | |
| December | 46 | 126.7 | 346.7 |
All values in cubic feet per second (cfs).
Common questions
- When does Pack River near Colburn, ID normally run highest?
- May, on the long-term record. The median daily flow that month is about 1,061.1 cfs, against 35 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Pack River near Colburn, ID?
- It depends on the month. In January, half of days historically fall near 113 cfs, with the middle 80% of days between 46.7 and 269.7 cfs. The month-by-month table on this page gives the full range.
- How long has Pack River near Colburn, ID been measured?
- Discharge records at USGS site 12392300 begin in 1958, about 68 years, covering roughly 3,917 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Pack River near Colburn, ID?
- The gauge sits at 48.42, -116.50194, in Idaho, in hydrologic subbasin 17010214, at an elevation of about 2,104 feet, draining roughly 124 square miles.
- Can I use Pack River near Colburn, ID data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.