USGS Streamgage 06331000
Little Muddy River below Cow Creek near Williston, ND
Little Muddy River below Cow Creek near Williston, ND is USGS streamgage 06331000 in North Dakota, monitoring river discharge in hydrologic subbasin 10110102. It drains a watershed of about 707 square miles. Discharge records at this site go back to 1954. Typical flow runs near 9.4 cfs in July and 33 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
- North Dakota
- Drainage area
- 707 sq mi
- Gauge elevation
- 1,880 ft
- Subbasin (HUC-8)
- 10110102
- Coordinates
- 48.28444, -103.5725
- USGS site number
- 06331000
- Records begin
- 1954-06-01 (72 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Little Muddy River below Cow Creek near Williston, ND. 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 |
|---|---|---|---|---|
| 4.6 | 5.1 | 5.7 | ||
| 4.3 | 5 | 5.9 | ||
| 4.1 | 4.8 | 5.8 | ||
| 4.1 | 5 | 6.5 | ||
| 4.1 | 5.1 | 6.9 | ||
| 4.1 | 5.1 | 6.9 | ||
| 3.9 | 5 | 6.7 | ||
| 3.8 | 4.8 | 6.5 | ||
| 3.6 | 4.7 | 6.4 | ||
| 3.5 | 4.6 | 6.2 | ||
| 3.4 | 4.5 | 6.2 | ||
| 3.4 | 4.5 | 6.3 | ||
| 3.3 | 4.5 | 6.2 | ||
| 3.3 | 4.5 | 6.3 |
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 72 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 | 3.3 | 7.2 | 13.2 | |
| February | 3.7 | 7.3 | 28.5 | |
| March | 7.5 | 24.5 | 485.4 | |
| April | 13 | 33 | 244.5 | |
| May | 9.4 | 18.8 | 62.2 | |
| June | 6.2 | 13.7 | 52.5 | |
| July | 3.9 | 9.4 | 42.4 | |
| August | 3.1 | 6.3 | 12.5 | |
| September | 3.5 | 6.4 | 14 | |
| October | 6 | 9.2 | 16.4 | |
| November | 7.6 | 11 | 17.6 | |
| December | 4.9 | 9.4 | 13.5 |
All values in cubic feet per second (cfs).
Common questions
- When does Little Muddy River below Cow Creek near Williston, ND normally run highest?
- April, on the long-term record. The median daily flow that month is about 33 cfs, against 6.3 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 Little Muddy River below Cow Creek near Williston, ND?
- It depends on the month. In January, half of days historically fall near 7.2 cfs, with the middle 80% of days between 3.3 and 13.2 cfs. The month-by-month table on this page gives the full range.
- How long has Little Muddy River below Cow Creek near Williston, ND been measured?
- Discharge records at USGS site 06331000 begin in 1954, about 72 years, covering roughly 9,191 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 Muddy River below Cow Creek near Williston, ND?
- 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 Muddy River below Cow Creek near Williston, ND?
- The gauge sits at 48.28444, -103.5725, in North Dakota, in hydrologic subbasin 10110102, at an elevation of about 1,880 feet, draining roughly 707 square miles.
- Can I use Little Muddy River below Cow Creek near Williston, ND 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.