USGS Streamgage 13055340
SF Teton River near Rexburg, ID
SF Teton River near Rexburg, ID is USGS streamgage 13055340 in Idaho, monitoring river discharge in hydrologic subbasin 17040204. It drains a watershed of about 1,070 square miles. Discharge records at this site go back to 1981. Typical flow runs near 123.6 cfs in July and 282.8 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
- Idaho
- Drainage area
- 1,070 sq mi
- Subbasin (HUC-8)
- 17040204
- Coordinates
- 43.835, -111.77778
- USGS site number
- 13055340
- Records begin
- 1981-11-02 (45 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for SF Teton River near Rexburg, ID. 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 |
|---|---|---|---|---|
| 44 | 58.5 | 73.6 | ||
| 33.6 | 59.2 | 84.4 | ||
| 24.7 | 54.1 | 86 | ||
| 18.3 | 50.4 | 87.2 | ||
| 16.2 | 48.2 | 87.6 | ||
| 15.6 | 46.6 | 85.9 | ||
| 18.9 | 49.6 | 88.8 | ||
| 22.1 | 51.9 | 90.9 | ||
| 17.8 | 47.4 | 86.2 | ||
| 8.4 | 39.7 | 88.6 | ||
| 9.8 | 38.4 | 84.1 | ||
| 14.2 | 41.6 | 84.1 | ||
| 15.9 | 41.9 | 84.1 | ||
| 22.8 | 50.3 | 96.2 |
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 44 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 | 72.6 | 158.3 | 234.7 | |
| February | 80 | 167.4 | 246 | |
| March | 120.8 | 208.4 | 395.8 | |
| April | 93.2 | 282.8 | 623.8 | |
| May | 144 | 639.8 | 1,500.7 | |
| June | 111.6 | 809.1 | 1,868 | |
| July | 3.5 | 123.6 | 791.1 | |
| August | 6 | 65.6 | 234.5 | |
| September | 13.9 | 77.6 | 198.9 | |
| October | 43.2 | 118.9 | 256.1 | |
| November | 85.4 | 175.6 | 267.3 | |
| December | 87 | 170.5 | 254.4 |
All values in cubic feet per second (cfs).
Common questions
- When does SF Teton River near Rexburg, ID normally run highest?
- June, on the long-term record. The median daily flow that month is about 809.1 cfs, against 65.6 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 SF Teton River near Rexburg, ID?
- It depends on the month. In January, half of days historically fall near 158.3 cfs, with the middle 80% of days between 72.6 and 234.7 cfs. The month-by-month table on this page gives the full range.
- How long has SF Teton River near Rexburg, ID been measured?
- Discharge records at USGS site 13055340 begin in 1981, about 45 years, covering roughly 9,198 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for SF Teton River near Rexburg, ID?
- 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 SF Teton River near Rexburg, ID?
- The gauge sits at 43.835, -111.77778, in Idaho, in hydrologic subbasin 17040204, draining roughly 1,070 square miles.
- Can I use SF Teton River near Rexburg, ID 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.