USGS Streamgage 06214500
Yellowstone River at Billings, MT
Yellowstone River at Billings, MT is USGS streamgage 06214500 in Montana, monitoring river discharge in hydrologic subbasin 10070004. It drains a watershed of about 11,807 square miles. Discharge records at this site go back to 1904. Typical flow runs near 12,419.7 cfs in July and 3,892.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 11,807 sq mi
- Gauge elevation
- 3,085 ft
- Subbasin (HUC-8)
- 10070004
- Coordinates
- 45.80012, -108.46803
- USGS site number
- 06214500
- Records begin
- 1904-06-01 (122 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 97 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 | 1,600.6 | 2,451 | 3,437.1 | |
| February | 1,709 | 2,505.9 | 3,611 | |
| March | 2,077.4 | 2,781.9 | 4,329.7 | |
| April | 2,452 | 3,892.3 | 6,657.3 | |
| May | 6,182.3 | 11,968.7 | 22,761.3 | |
| June | 12,720.3 | 23,846.7 | 41,176.7 | |
| July | 4,987.4 | 12,419.7 | 22,619.4 | |
| August | 2,328.4 | 4,621 | 8,221.6 | |
| September | 2,202.3 | 3,698.3 | 6,033.7 | |
| October | 2,727.1 | 3,913.2 | 5,639 | |
| November | 2,616.3 | 3,558.7 | 4,645.3 | |
| December | 1,846.8 | 2,790 | 3,739.4 |
All values in cubic feet per second (cfs).