USGS Streamgage 06463900
Antelope Creek near Mission, SD
Antelope Creek near Mission, SD is USGS streamgage 06463900 in South Dakota, monitoring river discharge in hydrologic subbasin 10150006. It drains a watershed of about 75 square miles. Discharge records at this site go back to 1990. 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
- 75 sq mi
- Gauge elevation
- 2,590 ft
- Subbasin (HUC-8)
- 10150006
- Coordinates
- 43.27378, -100.68422
- USGS site number
- 06463900
- Records begin
- 1990-07-11 (36 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Antelope Creek near Mission, 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 |
|---|---|---|---|---|
| 0.8 | 1 | 1.1 | ||
| 0.7 | 0.9 | 1.2 | ||
| 0.6 | 0.9 | 1.6 | ||
| 0.6 | 1.1 | 5.6 | ||
| 0.6 | 1.4 | 12.4 | ||
| 0.7 | 1.7 | 13.4 | ||
| 0.9 | 2.7 | 21.2 | ||
| 1.2 | 3.3 | 19.1 | ||
| 1.1 | 4.5 | 30.6 | ||
| 1.1 | 4.1 | 24.8 | ||
| 1 | 3.3 | 16.7 | ||
| 0.8 | 2.6 | 11.4 | ||
| 0.7 | 2.1 | 7.8 | ||
| 0.6 | 1.8 | 6.1 |
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 1 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 3 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| September | — | 3.8 | — | |
| October | — | 2.5 | — | |
| November | — | 3.2 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Antelope Creek near Mission, SD normally run highest?
- September, on the long-term record. The median daily flow that month is about 3.8 cfs, against 2.5 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- How long has Antelope Creek near Mission, SD been measured?
- Discharge records at USGS site 06463900 begin in 1990, about 36 years, covering roughly 214 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Antelope Creek near Mission, 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 Antelope Creek near Mission, SD?
- The gauge sits at 43.27378, -100.68422, in South Dakota, in hydrologic subbasin 10150006, at an elevation of about 2,590 feet, draining roughly 75 square miles.
- Can I use Antelope Creek near Mission, 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.