USGS Streamgage 06464500
Keya Paha River at Wewela, SD
Keya Paha River at Wewela, SD is USGS streamgage 06464500 in South Dakota, monitoring river discharge in hydrologic subbasin 10150006. It sits on the Keya Paha River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 1,129 square miles. Discharge records at this site go back to 1937. Typical flow runs near 44.1 cfs in July and 122.9 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
- 1,129 sq mi
- Gauge elevation
- 2,063 ft
- Subbasin (HUC-8)
- 10150006
- Coordinates
- 43.02708, -99.78053
- USGS site number
- 06464500
- Records begin
- 1937-12-01 (89 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Keya Paha River at Wewela, 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 |
|---|---|---|---|---|
| 28.7 | 30.4 | 32 | ||
| 27.5 | 29.7 | 31.6 | ||
| 26.9 | 29.3 | 32 | ||
| 27.1 | 30.8 | 38.4 | ||
| 26.6 | 31.6 | 42.9 | ||
| 27.3 | 32.9 | 46.3 | ||
| 28.8 | 36.4 | 57.7 | ||
| 32 | 52 | 168 | ||
| 32.4 | 67.9 | 216 | ||
| 33.3 | 69.6 | 200 | ||
| 32.5 | 61.2 | 150 | ||
| 31 | 55 | 121 | ||
| 29.9 | 50.6 | 102 | ||
| 28.9 | 47.7 | 92.6 |
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 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 | 9.2 | 33 | 86.4 | |
| February | 17.9 | 52 | 179.6 | |
| March | 42.7 | 106.7 | 355.3 | |
| April | 54.1 | 122.9 | 343.6 | |
| May | 39.7 | 101.9 | 334.4 | |
| June | 29.9 | 80.7 | 279.3 | |
| July | 16.2 | 44.1 | 146.9 | |
| August | 10.3 | 30.8 | 85.6 | |
| September | 11.9 | 28.5 | 62.6 | |
| October | 21.5 | 36.8 | 86.1 | |
| November | 22 | 44.3 | 90.1 | |
| December | 15 | 36.3 | 91 |
All values in cubic feet per second (cfs).
Common questions
- When does Keya Paha River at Wewela, SD normally run highest?
- April, on the long-term record. The median daily flow that month is about 122.9 cfs, against 28.5 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 Keya Paha River at Wewela, SD?
- It depends on the month. In January, half of days historically fall near 33 cfs, with the middle 80% of days between 9.2 and 86.4 cfs. The month-by-month table on this page gives the full range.
- How long has Keya Paha River at Wewela, SD been measured?
- Discharge records at USGS site 06464500 begin in 1937, about 89 years, covering roughly 9,087 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Keya Paha River at Wewela, 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 Keya Paha River at Wewela, SD?
- The gauge sits at 43.02708, -99.78053, in South Dakota, in hydrologic subbasin 10150006, at an elevation of about 2,063 feet, draining roughly 1,129 square miles.
- Can I use Keya Paha River at Wewela, 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 Keya Paha River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Keya Paha River in full.
- Keya Paha River near Keyapaha, SD 535 sq mi
- Keya Paha River at Wewela, SD this page