USGS Streamgage 06090300
Missouri River near Great Falls, MT
Missouri River near Great Falls, MT is USGS streamgage 06090300 in Montana, monitoring river discharge in hydrologic subbasin 10030102. It drains a watershed of about 22,881 square miles. Discharge records at this site go back to 1952. Typical flow runs near 6,907.4 cfs in July and 6,910.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Montana
- Drainage area
- 22,881 sq mi
- Gauge elevation
- 2,818 ft
- Subbasin (HUC-8)
- 10030102
- Coordinates
- 47.58444, -111.06058
- USGS site number
- 06090300
- Records begin
- 1952-05-04 (74 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 70 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 | 4,155.5 | 5,852.3 | 7,784.2 | |
| February | 4,284.5 | 6,000.7 | 8,094.5 | |
| March | 4,282.9 | 6,054.8 | 9,034.2 | |
| April | 4,361 | 6,910.7 | 10,563 | |
| May | 5,179 | 9,757.1 | 17,396.8 | |
| June | 5,245.3 | 11,061.3 | 23,490 | |
| July | 4,275.5 | 6,907.4 | 14,194.8 | |
| August | 4,041.3 | 5,376.8 | 7,812.9 | |
| September | 3,807 | 5,124.3 | 7,393.3 | |
| October | 3,956.5 | 5,253.2 | 7,721 | |
| November | 4,109 | 5,470 | 7,880 | |
| December | 3,959.7 | 5,730 | 7,450.3 |
All values in cubic feet per second (cfs).