USGS Streamgage 06406500
Battle Creek below Hermosa, SD
Battle Creek below Hermosa, SD is USGS streamgage 06406500 in South Dakota, monitoring river discharge in hydrologic subbasin 10120109. It sits on the Battle Creek, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 284 square miles. Discharge records at this site go back to 1950. Typical flow runs near 12.7 cfs in July and 11 cfs in April, with the higher of the two arriving in July. 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
- 284 sq mi
- Gauge elevation
- 2,809 ft
- Subbasin (HUC-8)
- 10120109
- Coordinates
- 43.72544, -102.90566
- USGS site number
- 06406500
- Records begin
- 1950-10-01 (76 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Battle Creek below Hermosa, 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 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0.1 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 | ||
| 0 | 0 | 0 |
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 76 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 | 1.1 | 9.5 | 26.7 | |
| February | 1.5 | 9.1 | 28 | |
| March | 2.3 | 10.6 | 30.3 | |
| April | 1.3 | 11 | 32.6 | |
| May | 1 | 15.8 | 147.8 | |
| June | 1.4 | 18.8 | 166.8 | |
| July | 0.1 | 12.7 | 60.4 | |
| August | 0 | 7.8 | 42.6 | |
| September | 0 | 5.4 | 31.4 | |
| October | 0 | 8.1 | 33.6 | |
| November | 0.4 | 10.2 | 32.5 | |
| December | 0.9 | 9.2 | 28.5 |
All values in cubic feet per second (cfs).
Common questions
- When does Battle Creek below Hermosa, SD normally run highest?
- June, on the long-term record. The median daily flow that month is about 18.8 cfs, against 5.4 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 Battle Creek below Hermosa, SD?
- It depends on the month. In January, half of days historically fall near 9.5 cfs, with the middle 80% of days between 1.1 and 26.7 cfs. The month-by-month table on this page gives the full range.
- How long has Battle Creek below Hermosa, SD been measured?
- Discharge records at USGS site 06406500 begin in 1950, about 76 years, covering roughly 9,092 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Battle Creek below Hermosa, 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 Battle Creek below Hermosa, SD?
- The gauge sits at 43.72544, -102.90566, in South Dakota, in hydrologic subbasin 10120109, at an elevation of about 2,809 feet, draining roughly 284 square miles.
- Can I use Battle Creek below Hermosa, 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 Battle Creek
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Battle Creek in full.
- Battle Creek above Keystone, SD 7 sq mi
- Battle Creek near Keystone, SD 59 sq mi
- Battle Creek at Hermosa, SD 169 sq mi
- Battle Creek below Hermosa, SD this page