USGS Streamgage 06426500
Belle Fourche River below Moorcroft, WY
Belle Fourche River below Moorcroft, WY is USGS streamgage 06426500 in Wyoming, monitoring river discharge in hydrologic subbasin 10120201. It sits on the Belle Fourche River, alongside 5 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,690 square miles. Discharge records at this site go back to 1943. Typical flow runs near 4.8 cfs in July and 12.1 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
Gauge details
- State
- Wyoming
- Drainage area
- 1,690 sq mi
- Gauge elevation
- 4,118 ft
- Subbasin (HUC-8)
- 10120201
- Coordinates
- 44.32188, -104.94061
- USGS site number
- 06426500
- Records begin
- 1943-10-01 (83 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Belle Fourche River below Moorcroft, WY. 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 |
|---|---|---|---|---|
| 0.6 | 0.7 | 0.9 | ||
| 0.5 | 0.7 | 0.9 | ||
| 0.4 | 0.7 | 1 | ||
| 0.4 | 0.7 | 1.2 | ||
| 0.3 | 0.7 | 1.2 | ||
| 0.2 | 0.7 | 1.3 | ||
| 0.4 | 0.9 | 2.7 | ||
| 0.4 | 1.1 | 3.4 | ||
| 0.3 | 1 | 4 | ||
| 0.2 | 1 | 4.1 | ||
| 0.2 | 0.9 | 3.8 | ||
| 0.1 | 0.8 | 3.2 | ||
| 0.1 | 0.7 | 2.7 | ||
| 0 | 0.7 | 2.6 |
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 83 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 | 0 | 1.8 | 8 | |
| February | 0 | 4.2 | 37 | |
| March | 0.6 | 13.8 | 150.3 | |
| April | 0.1 | 12.1 | 61.7 | |
| May | 0.1 | 10.5 | 112.6 | |
| June | 0.4 | 10.8 | 117.7 | |
| July | 0.1 | 4.8 | 37.3 | |
| August | 0 | 2.4 | 19.4 | |
| September | 0 | 1.5 | 9 | |
| October | 0 | 2.2 | 12.3 | |
| November | 0 | 2.4 | 9 | |
| December | 0 | 2.1 | 7.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Belle Fourche River below Moorcroft, WY normally run highest?
- March, on the long-term record. The median daily flow that month is about 13.8 cfs, against 1.5 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Belle Fourche River below Moorcroft, WY?
- It depends on the month. In January, half of days historically fall near 1.8 cfs, with the middle 80% of days between 0 and 8 cfs. The month-by-month table on this page gives the full range.
- How long has Belle Fourche River below Moorcroft, WY been measured?
- Discharge records at USGS site 06426500 begin in 1943, about 83 years, covering roughly 9,197 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Belle Fourche River below Moorcroft, WY?
- 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 Belle Fourche River below Moorcroft, WY?
- The gauge sits at 44.32188, -104.94061, in Wyoming, in hydrologic subbasin 10120201, at an elevation of about 4,118 feet, draining roughly 1,690 square miles.
- Can I use Belle Fourche River below Moorcroft, WY 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 Belle Fourche River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Belle Fourche River in full.
- Belle Fourche River below Moorcroft, WY this page
- Belle Fourche River at Wy-Sd State Line 3,233 sq mi
- Belle Fourche River near Fruitdale, SD 4,500 sq mi
- Belle Fourche River near Sturgis, SD 5,798 sq mi
- Belle Fourche River near Elm Springs, SD 7,004 sq mi
- Belle Fourche River at Devils Tower, WY