USGS Streamgage 06447500
Little White River near Martin, SD
Little White River near Martin, SD is USGS streamgage 06447500 in South Dakota, monitoring river discharge in hydrologic subbasin 10140203. It sits on the Little White River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 313 square miles. Discharge records at this site go back to 1932. Typical flow runs near 11.3 cfs in July and 32.3 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
- South Dakota
- Drainage area
- 313 sq mi
- Gauge elevation
- 3,072 ft
- Subbasin (HUC-8)
- 10140203
- Coordinates
- 43.16692, -101.63231
- USGS site number
- 06447500
- Records begin
- 1932-05-05 (94 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Little White River near Martin, SD. 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 |
|---|---|---|---|---|
| 6.1 | 6.5 | 6.9 | ||
| 5.8 | 6.3 | 6.9 | ||
| 5.6 | 6.3 | 7.1 | ||
| 5.6 | 6.6 | 8.7 | ||
| 5.6 | 6.7 | 8.5 | ||
| 5.5 | 6.6 | 8.5 | ||
| 6.3 | 9.1 | 21.2 | ||
| 7.1 | 14.3 | 61.7 | ||
| 7 | 14.1 | 38.2 | ||
| 6.7 | 11.1 | 23.6 | ||
| 6.4 | 9.9 | 18.7 | ||
| 6.1 | 9 | 15.4 | ||
| 6 | 8.4 | 13.1 | ||
| 5.8 | 8.1 | 12.1 |
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 88 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 | 5.6 | 11.4 | 25 | |
| February | 8.6 | 17.8 | 50.5 | |
| March | 16.8 | 33.1 | 89.5 | |
| April | 18.7 | 32.3 | 69.6 | |
| May | 14.5 | 26 | 67.4 | |
| June | 8.8 | 17.7 | 56.5 | |
| July | 5.2 | 11.3 | 35.2 | |
| August | 4.5 | 9.3 | 21.4 | |
| September | 6 | 9.3 | 15.9 | |
| October | 9.5 | 13 | 21.5 | |
| November | 11 | 15.9 | 24.5 | |
| December | 7.5 | 12.8 | 22.4 |
All values in cubic feet per second (cfs).
Common questions
- When does Little White River near Martin, SD normally run highest?
- March, on the long-term record. The median daily flow that month is about 33.1 cfs, against 9.3 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 White River near Martin, SD?
- It depends on the month. In January, half of days historically fall near 11.4 cfs, with the middle 80% of days between 5.6 and 25 cfs. The month-by-month table on this page gives the full range.
- How long has Little White River near Martin, SD been measured?
- Discharge records at USGS site 06447500 begin in 1932, about 94 years, covering roughly 9,090 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 White River near Martin, SD?
- 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 White River near Martin, SD?
- The gauge sits at 43.16692, -101.63231, in South Dakota, in hydrologic subbasin 10140203, at an elevation of about 3,072 feet, draining roughly 313 square miles.
- Can I use Little White River near Martin, SD 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 White River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Little White River in full.
- Little White River near Martin, SD this page
- Little White River near Vetal, SD 607 sq mi
- Little White River near Rosebud, SD 1,033 sq mi
- Little White River below White River, SD 1,549 sq mi