USGS Streamgage 12323233
Blacktail Creek above Grove Gulch, at Butte, MT
Blacktail Creek above Grove Gulch, at Butte, MT is USGS streamgage 12323233 in Montana, monitoring river discharge in hydrologic subbasin 17010201. It drains a watershed of about 90 square miles. Discharge records at this site go back to 2020. Typical flow runs near 6.6 cfs in July and 15.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 90 sq mi
- Gauge elevation
- 5,446 ft
- Subbasin (HUC-8)
- 17010201
- Coordinates
- 45.99127, -112.52736
- USGS site number
- 12323233
- Records begin
- 2020-04-30 (6 years)
14-day flow forecast
Based on observations through for Blacktail Creek above Grove Gulch, at Butte, MT. 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 |
|---|---|---|---|---|
| 3.8 | 4 | 4.3 | ||
| 3.8 | 4 | 4.6 | ||
| 3.7 | 4 | 4.6 | ||
| 3.7 | 4 | 4.9 | ||
| 3.6 | 4 | 5 | ||
| 3.6 | 4.1 | 6.4 | ||
| 3.6 | 4.1 | 5.9 | ||
| 3.6 | 4.1 | 5.6 | ||
| 3.5 | 4.1 | 5.7 | ||
| 3.5 | 4.1 | 5.8 | ||
| 3.5 | 4.2 | 6.6 | ||
| 3.5 | 4.2 | 6.7 | ||
| 3.4 | 4.2 | 6.3 | ||
| 3.4 | 4.2 | 6.2 |
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 6 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 | — | 6.7 | — | |
| February | — | 6.9 | — | |
| March | — | 10.2 | — | |
| April | — | 15.7 | — | |
| May | — | 18.1 | — | |
| June | — | 12.7 | — | |
| July | — | 6.6 | — | |
| August | — | 6.5 | — | |
| September | — | 6.6 | — | |
| October | — | 9.8 | — | |
| November | — | 9.6 | — | |
| December | — | 7.1 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Blacktail Creek above Grove Gulch, at Butte, MT normally run highest?
- May, on the long-term record. The median daily flow that month is about 18.1 cfs, against 6.5 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- How long has Blacktail Creek above Grove Gulch, at Butte, MT been measured?
- Discharge records at USGS site 12323233 begin in 2020, about 6 years, covering roughly 2,288 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Blacktail Creek above Grove Gulch, at Butte, MT?
- The gauge sits at 45.99127, -112.52736, in Montana, in hydrologic subbasin 17010201, at an elevation of about 5,446 feet, draining roughly 90 square miles.
- Can I use Blacktail Creek above Grove Gulch, at Butte, MT 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.