USGS Streamgage 06289000
Little Bighorn River at State Line near Wyola, MT
Little Bighorn River at State Line near Wyola, MT is USGS streamgage 06289000 in Montana, monitoring river discharge in hydrologic subbasin 10080016. It sits on the Little Bighorn River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 182 square miles. Discharge records at this site go back to 1939. Typical flow runs near 201 cfs in July and 77 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
Gauge details
- State
- Montana
- Drainage area
- 182 sq mi
- Gauge elevation
- 4,333 ft
- Subbasin (HUC-8)
- 10080016
- Coordinates
- 45.00711, -107.61541
- USGS site number
- 06289000
- Records begin
- 1939-04-01 (87 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Little Bighorn River at State Line near Wyola, MT. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 72.9 | 74.5 | 76 | ||
| 72.3 | 74.2 | 75.7 | ||
| 71.9 | 74 | 75.8 | ||
| 72 | 74.2 | 76.4 | ||
| 71.5 | 73.9 | 76 | ||
| 70.7 | 73.5 | 75.8 | ||
| 71 | 73.8 | 76.6 | ||
| 69.8 | 73.3 | 76 | ||
| 69.2 | 73 | 75.8 | ||
| 68.5 | 72.6 | 75.6 | ||
| 67.9 | 72.4 | 75.4 | ||
| 67.6 | 72.2 | 75.3 | ||
| 66.8 | 71.9 | 75.2 | ||
| 66.5 | 71.8 | 75.2 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 87 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 | 46.5 | 64.3 | 77.8 | |
| February | 49.7 | 61.6 | 73.7 | |
| March | 51.5 | 61.6 | 73.7 | |
| April | 59.8 | 77 | 121.5 | |
| May | 156.7 | 294.8 | 562.8 | |
| June | 218.2 | 460.6 | 914.8 | |
| July | 120.3 | 201 | 325.6 | |
| August | 85.5 | 120.6 | 161.6 | |
| September | 73.1 | 96.2 | 126.2 | |
| October | 67.6 | 85.8 | 107.4 | |
| November | 58.2 | 75.6 | 94.4 | |
| December | 49.7 | 69.1 | 84.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Little Bighorn River at State Line near Wyola, MT normally run highest?
- June, on the long-term record. The median daily flow that month is about 460.6 cfs, against 61.6 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Little Bighorn River at State Line near Wyola, MT?
- It depends on the month. In January, half of days historically fall near 64.3 cfs, with the middle 80% of days between 46.5 and 77.8 cfs. The month-by-month table on this page gives the full range.
- How long has Little Bighorn River at State Line near Wyola, MT been measured?
- Discharge records at USGS site 06289000 begin in 1939, about 87 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Little Bighorn River at State Line near Wyola, MT?
- Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
- Where is Little Bighorn River at State Line near Wyola, MT?
- The gauge sits at 45.00711, -107.61541, in Montana, in hydrologic subbasin 10080016, at an elevation of about 4,333 feet, draining roughly 182 square miles.
- Can I use Little Bighorn River at State Line near Wyola, MT data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.
Upstream and downstream on the Little Bighorn River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Little Bighorn River in full.
- Little Bighorn River at State Line near Wyola, MT this page
- Little Bighorn River below Pass Creek near Wyola, MT 426 sq mi
- Little Bighorn River near Crow Agency, MT 1,186 sq mi
- Little Bighorn River near Hardin, MT 1,294 sq mi