USGS Streamgage 06287800
Bighorn River at bridge, at St. Xavier, MT
Bighorn River at bridge, at St. Xavier, MT is USGS streamgage 06287800 in Montana, monitoring river discharge in hydrologic subbasin 10080015. It sits on the Bighorn River, alongside 5 other gauges Rivermatics tracks on the same river. It drains a watershed of about 19,906 square miles. Discharge records at this site go back to 2011. Typical flow runs near 3,446.1 cfs in July and 3,234.3 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, alongside daily high and low water-temperature forecasts.
View live conditions & forecast →
Gauge details
- State
- Montana
- Drainage area
- 19,906 sq mi
- Gauge elevation
- 3,041 ft
- Subbasin (HUC-8)
- 10080015
- Coordinates
- 45.46075, -107.74933
- USGS site number
- 06287800
- Records begin
- 2011-06-11 (15 years)
- Rivermatics forecast
- 14-day flow outlook + water temperature
14-day flow forecast
Based on observations through for Bighorn River at bridge, at St. Xavier, 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 |
|---|---|---|---|---|
| 1,589 | 1,610 | 1,630 | ||
| 1,566 | 1,605 | 1,647 | ||
| 1,550 | 1,604 | 1,674 | ||
| 1,537 | 1,604 | 1,696 | ||
| 1,525 | 1,606 | 1,719 | ||
| 1,514 | 1,607 | 1,734 | ||
| 1,508 | 1,617 | 1,741 | ||
| 1,511 | 1,622 | 1,780 | ||
| 1,507 | 1,626 | 1,795 | ||
| 1,499 | 1,628 | 1,810 | ||
| 1,492 | 1,628 | 1,818 | ||
| 1,480 | 1,625 | 1,820 | ||
| 1,468 | 1,622 | 1,823 | ||
| 1,463 | 1,621 | 1,830 |
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 14 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 | 2,014.5 | 2,585.2 | 3,559.4 | |
| February | 1,970.4 | 2,676.6 | 3,935 | |
| March | 1,892.6 | 2,954.2 | 6,588.1 | |
| April | 1,874.7 | 3,234.3 | 9,328 | |
| May | 1,894.5 | 3,667.1 | 10,945.2 | |
| June | 1,827.3 | 4,146.7 | 13,823.3 | |
| July | 1,891.9 | 3,446.1 | 10,398.7 | |
| August | 1,775.8 | 2,351.9 | 3,757.4 | |
| September | 1,681.3 | 2,370 | 3,756 | |
| October | 1,778.7 | 2,624.2 | 4,507.1 | |
| November | 1,909.7 | 2,543.3 | 4,046.7 | |
| December | 2,000 | 2,581.3 | 3,566.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Bighorn River at bridge, at St. Xavier, MT normally run highest?
- June, on the long-term record. The median daily flow that month is about 4,146.7 cfs, against 2,351.9 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Bighorn River at bridge, at St. Xavier, MT?
- It depends on the month. In January, half of days historically fall near 2,585.2 cfs, with the middle 80% of days between 2,014.5 and 3,559.4 cfs. The month-by-month table on this page gives the full range.
- How long has Bighorn River at bridge, at St. Xavier, MT been measured?
- Discharge records at USGS site 06287800 begin in 2011, about 15 years, covering roughly 5,179 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Bighorn River at bridge, at St. Xavier, 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. A companion model forecasts each day's water-temperature high and low. 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 Bighorn River at bridge, at St. Xavier, MT?
- The gauge sits at 45.46075, -107.74933, in Montana, in hydrologic subbasin 10080015, at an elevation of about 3,041 feet, draining roughly 19,906 square miles.
- Can I use Bighorn River at bridge, at St. Xavier, 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 Bighorn River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Bighorn River in full.
- Bighorn River at Basin, WY 13,226 sq mi
- Bighorn River at Kane, WY 15,750 sq mi
- Bighorn River below Yellowtail Afterbay Dam near St. Xavier 19,670 sq mi
- Bighorn River at bridge, at St. Xavier, MT this page
- Bighorn River at Two Leggins Bridge, near Hardin 20,614 sq mi
- Bighorn River ab Tullock Creek near Bighorn, MT 22,417 sq mi