USGS Streamgage 06115200
Missouri River near Landusky, MT
Missouri River near Landusky, MT is USGS streamgage 06115200 in Montana, monitoring river discharge in hydrologic subbasin 10040104. It drains a watershed of about 40,649 square miles. Discharge records at this site go back to 1934. Typical flow runs near 8,810.6 cfs in July and 8,567.7 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 40,649 sq mi
- Gauge elevation
- 2,261 ft
- Subbasin (HUC-8)
- 10040104
- Coordinates
- 47.63143, -108.68774
- USGS site number
- 06115200
- Records begin
- 1934-03-01 (92 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 92 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 | 4,146.8 | 6,379.7 | 8,996.5 | |
| February | 4,438.3 | 6,718.3 | 9,809.7 | |
| March | 5,064.2 | 7,425.2 | 12,343.2 | |
| April | 5,270.3 | 8,567.7 | 14,736.7 | |
| May | 6,338.1 | 12,750 | 23,554.8 | |
| June | 6,889.3 | 15,380 | 33,250 | |
| July | 4,654.8 | 8,810.6 | 18,349 | |
| August | 3,983.2 | 6,057.4 | 9,625.2 | |
| September | 3,991 | 5,803 | 8,709.3 | |
| October | 4,343.9 | 6,051 | 8,569 | |
| November | 4,540.3 | 6,330.7 | 8,597 | |
| December | 4,109.7 | 6,386.5 | 8,643.5 |
All values in cubic feet per second (cfs).