USGS Streamgage 06471200
Maple River at Nd-Sd State Line
Maple River at Nd-Sd State Line is USGS streamgage 06471200 in North Dakota, monitoring river discharge in hydrologic subbasin 10160004. It drains a watershed of about 766 square miles. Discharge records at this site go back to 1956. Typical flow runs near 5 cfs in July and 21.6 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
- 766 sq mi
- Gauge elevation
- 1,380 ft
- Subbasin (HUC-8)
- 10160004
- Coordinates
- 45.93889, -98.45222
- USGS site number
- 06471200
- Records begin
- 1956-06-01 (70 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Maple River at Nd-Sd State Line. 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 |
|---|---|---|---|---|
| 8.3 | 9.1 | 9.8 | ||
| 7.7 | 8.9 | 9.8 | ||
| 7.3 | 9 | 10.6 | ||
| 5.9 | 8.5 | 10.3 | ||
| 5.4 | 8.3 | 10.5 | ||
| 4.4 | 7.9 | 10.5 | ||
| 3.7 | 7.7 | 10.9 | ||
| 3.2 | 7.4 | 11.1 | ||
| 2.5 | 6.9 | 11.1 | ||
| 2 | 6.4 | 11 | ||
| 1.6 | 6 | 10.8 | ||
| 1.5 | 5.8 | 10.8 | ||
| 1.2 | 5.5 | 10.9 | ||
| 1.1 | 5.2 | 10.9 |
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 70 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 | 0 | 3.2 | |
| February | 0 | 0 | 6.7 | |
| March | 0 | 8.3 | 296.6 | |
| April | 0 | 21.6 | 462 | |
| May | 0 | 18.6 | 154.5 | |
| June | 0 | 9.7 | 101.3 | |
| July | 0 | 5 | 88.7 | |
| August | 0 | 0.6 | 33.8 | |
| September | 0 | 0 | 12 | |
| October | 0 | 0 | 12.7 | |
| November | 0 | 0 | 8.2 | |
| December | 0 | 0 | 4.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Maple River at Nd-Sd State Line normally run highest?
- April, on the long-term record. The median daily flow that month is about 21.6 cfs, against 0 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Maple River at Nd-Sd State Line?
- It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 3.2 cfs. The month-by-month table on this page gives the full range.
- How long has Maple River at Nd-Sd State Line been measured?
- Discharge records at USGS site 06471200 begin in 1956, about 70 years, covering roughly 9,181 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Maple River at Nd-Sd State Line?
- 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 Maple River at Nd-Sd State Line?
- The gauge sits at 45.93889, -98.45222, in North Dakota, in hydrologic subbasin 10160004, at an elevation of about 1,380 feet, draining roughly 766 square miles.
- Can I use Maple River at Nd-Sd State Line 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.