USGS Streamgage 06138580
Big Sandy Creek ab Spring Coulee, near Laredo, MT
Big Sandy Creek ab Spring Coulee, near Laredo, MT is USGS streamgage 06138580 in Montana, monitoring river discharge in hydrologic subbasin 10050005. Discharge records at this site go back to 2020. Typical flow runs near 10.2 cfs in July and 9.6 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Gauge elevation
- 2,562 ft
- Subbasin (HUC-8)
- 10050005
- Coordinates
- 48.45269, -109.92083
- USGS site number
- 06138580
- Records begin
- 2020-09-24 (6 years)
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 | — | 3.7 | — | |
| February | — | 6.9 | — | |
| March | — | 13.5 | — | |
| April | — | 9.6 | — | |
| May | — | 15.7 | — | |
| June | — | 16 | — | |
| July | — | 10.2 | — | |
| August | — | 4.7 | — | |
| September | — | 2.5 | — | |
| October | — | 1.5 | — | |
| November | — | 2.8 | — | |
| December | — | 2 | — |
All values in cubic feet per second (cfs).