USGS Streamgage 13055250
NF Teton River near Sugar City, ID
NF Teton River near Sugar City, ID is USGS streamgage 13055250 in Idaho, monitoring river discharge in hydrologic subbasin 17040204. Discharge records at this site go back to 1977. Typical flow runs near 66.5 cfs in July and 153.2 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
- Subbasin (HUC-8)
- 17040204
- Coordinates
- 43.8875, -111.75778
- USGS site number
- 13055250
- Records begin
- 1977-04-01 (49 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for NF Teton River near Sugar City, 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 |
|---|---|---|---|---|
| 0 | 0 | 0.2 | ||
| 0 | 0 | 0.2 | ||
| 0 | 0.1 | 0.2 | ||
| 0 | 0.1 | 0.2 | ||
| 0 | 0.1 | 0.2 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.3 | ||
| 0 | 0.1 | 0.4 | ||
| 0 | 0.1 | 0.4 |
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 49 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 | 52.4 | 91.8 | 143.8 | |
| February | 50.8 | 94.2 | 153 | |
| March | 80.7 | 125.7 | 210.3 | |
| April | 49.4 | 153.2 | 309.5 | |
| May | 92.2 | 298.4 | 599.2 | |
| June | 92.4 | 354.7 | 875.4 | |
| July | 3.8 | 66.5 | 277.3 | |
| August | 0 | 12.5 | 122.1 | |
| September | 0.1 | 26.7 | 119.8 | |
| October | 5.2 | 60.3 | 162.9 | |
| November | 40.5 | 92.1 | 164.4 | |
| December | 48.3 | 93.9 | 156.6 |
All values in cubic feet per second (cfs).
Common questions
- When does NF Teton River near Sugar City, ID normally run highest?
- June, on the long-term record. The median daily flow that month is about 354.7 cfs, against 12.5 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 NF Teton River near Sugar City, ID?
- It depends on the month. In January, half of days historically fall near 91.8 cfs, with the middle 80% of days between 52.4 and 143.8 cfs. The month-by-month table on this page gives the full range.
- How long has NF Teton River near Sugar City, ID been measured?
- Discharge records at USGS site 13055250 begin in 1977, about 49 years, covering roughly 8,463 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for NF Teton River near Sugar City, 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 NF Teton River near Sugar City, ID?
- The gauge sits at 43.8875, -111.75778, in Idaho, in hydrologic subbasin 17040204.
- Can I use NF Teton River near Sugar City, 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.