USGS Streamgage 13302500
Salmon River at Salmon, ID
Salmon River at Salmon, ID is USGS streamgage 13302500 in Idaho, monitoring river discharge in hydrologic subbasin 17060203. It sits on the Salmon River, alongside 4 other gauges Rivermatics tracks on the same river. It drains a watershed of about 3,737 square miles. Discharge records at this site go back to 1912. Typical flow runs near 2,331.3 cfs in July and 1,525.3 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
- Idaho
- Drainage area
- 3,737 sq mi
- Subbasin (HUC-8)
- 17060203
- Coordinates
- 45.18361, -113.89528
- USGS site number
- 13302500
- Records begin
- 1912-06-10 (114 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Salmon River at Salmon, 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 |
|---|---|---|---|---|
| 863 | 896 | 921 | ||
| 837 | 879 | 912 | ||
| 818 | 865 | 903 | ||
| 803 | 855 | 898 | ||
| 786 | 843 | 891 | ||
| 774 | 836 | 892 | ||
| 763 | 831 | 889 | ||
| 753 | 826 | 892 | ||
| 743 | 819 | 891 | ||
| 734 | 814 | 894 | ||
| 728 | 811 | 896 | ||
| 720 | 806 | 896 | ||
| 712 | 801 | 894 | ||
| 707 | 798 | 896 |
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 113 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 | 813.5 | 1,050.3 | 1,328.7 | |
| February | 837.1 | 1,067.2 | 1,305.5 | |
| March | 893.5 | 1,106.1 | 1,413.2 | |
| April | 1,022.8 | 1,525.3 | 2,617 | |
| May | 1,892.6 | 3,482.3 | 6,763.5 | |
| June | 2,190.3 | 5,061.7 | 9,840.7 | |
| July | 1,008.5 | 2,331.3 | 4,525.2 | |
| August | 628.4 | 1,115.3 | 1,864.2 | |
| September | 660.7 | 1,013.1 | 1,485 | |
| October | 885.9 | 1,245.2 | 1,656.8 | |
| November | 983.1 | 1,281 | 1,592.3 | |
| December | 830.5 | 1,123.9 | 1,428.4 |
All values in cubic feet per second (cfs).
Common questions
- When does Salmon River at Salmon, ID normally run highest?
- June, on the long-term record. The median daily flow that month is about 5,061.7 cfs, against 1,013.1 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 Salmon River at Salmon, ID?
- It depends on the month. In January, half of days historically fall near 1,050.3 cfs, with the middle 80% of days between 813.5 and 1,328.7 cfs. The month-by-month table on this page gives the full range.
- How long has Salmon River at Salmon, ID been measured?
- Discharge records at USGS site 13302500 begin in 1912, about 114 years, covering roughly 9,197 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Salmon River at Salmon, 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 Salmon River at Salmon, ID?
- The gauge sits at 45.18361, -113.89528, in Idaho, in hydrologic subbasin 17060203, draining roughly 3,737 square miles.
- Can I use Salmon River at Salmon, 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.
Upstream and downstream on the Salmon River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Salmon River in full.
- Salmon River below Yankee Fork near Clayton, ID 807 sq mi
- Salmon River Ab East Fork near Clayton, ID 1,200 sq mi
- Salmon River at Salmon, ID this page
- Salmon River near Shoup, ID 6,239 sq mi
- Salmon River at White Bird, ID 13,421 sq mi