USGS Streamgage 13236500
Deadwood River below Deadwood Reservoir near Lowman, ID
Deadwood River below Deadwood Reservoir near Lowman, ID is USGS streamgage 13236500 in Idaho, monitoring river discharge in hydrologic subbasin 17050120. It drains a watershed of about 109 square miles. Discharge records at this site go back to 1926. Typical flow runs near 557.4 cfs in July and 4.6 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Idaho
- Drainage area
- 109 sq mi
- Subbasin (HUC-8)
- 17050120
- Coordinates
- 44.29194, -115.64194
- USGS site number
- 13236500
- Records begin
- 1926-10-01 (100 years)
14-day flow forecast
Based on observations through for Deadwood River below Deadwood Reservoir near Lowman, ID. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 2.1 | 3.1 | 4.3 | ||
| 2 | 3.1 | 4.8 | ||
| 1.9 | 3.1 | 7.2 | ||
| 2 | 3.3 | 9 | ||
| 1.9 | 3.3 | 10.9 | ||
| 1.9 | 3.4 | 9.3 | ||
| 1.9 | 3.4 | 11.1 | ||
| 1.8 | 3.4 | 16.3 | ||
| 1.7 | 3.4 | 25 | ||
| 1.6 | 3.5 | 41 | ||
| 1.6 | 3.8 | 82.3 | ||
| 1.7 | 4 | 131 | ||
| 1.7 | 4.1 | 163 | ||
| 1.7 | 4.3 | 224 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 96 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 | 1.3 | 3 | 54.6 | |
| February | 1.3 | 3 | 56.3 | |
| March | 1 | 3 | 58.1 | |
| April | 1.2 | 4.6 | 271.2 | |
| May | 1.7 | 31.7 | 785.4 | |
| June | 9.3 | 380.7 | 1,151.7 | |
| July | 185.1 | 557.4 | 989.6 | |
| August | 171.2 | 818 | 1,122.3 | |
| September | 12 | 214.8 | 996.5 | |
| October | 1.1 | 16.1 | 246 | |
| November | 1 | 3 | 55.1 | |
| December | 1.2 | 3 | 55 |
All values in cubic feet per second (cfs).
Common questions
- When does Deadwood River below Deadwood Reservoir near Lowman, ID normally run highest?
- August, on the long-term record. The median daily flow that month is about 818 cfs, against 3 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Deadwood River below Deadwood Reservoir near Lowman, ID?
- It depends on the month. In January, half of days historically fall near 3 cfs, with the middle 80% of days between 1.3 and 54.6 cfs. The month-by-month table on this page gives the full range.
- How long has Deadwood River below Deadwood Reservoir near Lowman, ID been measured?
- Discharge records at USGS site 13236500 begin in 1926, about 100 years, covering roughly 9,153 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Deadwood River below Deadwood Reservoir near Lowman, ID?
- The gauge sits at 44.29194, -115.64194, in Idaho, in hydrologic subbasin 17050120, draining roughly 109 square miles.
- Can I use Deadwood River below Deadwood Reservoir near Lowman, 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.