USGS Streamgage 06109500
Missouri River at Virgelle, MT
Missouri River at Virgelle, MT is USGS streamgage 06109500 in Montana, monitoring river discharge in hydrologic subbasin 10040101. It drains a watershed of about 34,000 square miles. Discharge records at this site go back to 1935. Typical flow runs near 7,931.9 cfs in July and 7,752 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 34,000 sq mi
- Gauge elevation
- 2,512 ft
- Subbasin (HUC-8)
- 10040101
- Coordinates
- 48.00378, -110.25882
- USGS site number
- 06109500
- Records begin
- 1935-03-01 (91 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 91 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 | 4,051.6 | 6,012.9 | 8,378.7 | |
| February | 4,311.4 | 6,217.2 | 8,699.3 | |
| March | 4,625.2 | 6,527.7 | 10,374.2 | |
| April | 4,944 | 7,752 | 13,073.3 | |
| May | 6,023.2 | 11,855.8 | 22,067.7 | |
| June | 6,419.7 | 14,130 | 30,073.3 | |
| July | 4,463.2 | 7,931.9 | 16,624.8 | |
| August | 3,828.4 | 5,652.3 | 8,912.6 | |
| September | 3,867.7 | 5,425.7 | 8,341.3 | |
| October | 4,123.2 | 5,679.4 | 8,181.9 | |
| November | 4,314 | 5,945.3 | 8,246.7 | |
| December | 4,048.1 | 6,044.5 | 8,130.3 |
All values in cubic feet per second (cfs).