USGS Streamgage 12414500
St Joe River at Calder, ID
St Joe River at Calder, ID is USGS streamgage 12414500 in Idaho, monitoring river discharge in hydrologic subbasin 17010304. It sits on the St Joe River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,025 square miles. Discharge records at this site go back to 1911. Typical flow runs near 1,171.1 cfs in July and 4,546 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
- 1,025 sq mi
- Gauge elevation
- 2,181 ft
- Subbasin (HUC-8)
- 17010304
- Coordinates
- 47.27444, -116.18889
- USGS site number
- 12414500
- Records begin
- 1911-05-01 (115 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for St Joe River at Calder, 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 |
|---|---|---|---|---|
| 366 | 382 | 404 | ||
| 355 | 375 | 401 | ||
| 361 | 391 | 444 | ||
| 379 | 430 | 525 | ||
| 368 | 405 | 473 | ||
| 352 | 383 | 429 | ||
| 339 | 366 | 403 | ||
| 329 | 355 | 386 | ||
| 322 | 347 | 376 | ||
| 315 | 340 | 369 | ||
| 310 | 335 | 362 | ||
| 305 | 329 | 356 | ||
| 300 | 325 | 351 | ||
| 296 | 321 | 347 |
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 115 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 | 344.7 | 784.5 | 2,489 | |
| February | 414.4 | 1,031.2 | 2,976.9 | |
| March | 740.1 | 1,711.6 | 4,271.9 | |
| April | 2,207 | 4,546 | 8,916 | |
| May | 3,668.4 | 7,198.7 | 13,032.3 | |
| June | 1,786.6 | 3,931 | 8,313.7 | |
| July | 713.4 | 1,171.1 | 2,304.5 | |
| August | 413.2 | 572.9 | 821.6 | |
| September | 331.6 | 428.8 | 599.7 | |
| October | 311.8 | 423.5 | 893.8 | |
| November | 309.5 | 601.8 | 1,929 | |
| December | 317.8 | 718.7 | 2,652.9 |
All values in cubic feet per second (cfs).
Common questions
- When does St Joe River at Calder, ID normally run highest?
- May, on the long-term record. The median daily flow that month is about 7,198.7 cfs, against 423.5 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for St Joe River at Calder, ID?
- It depends on the month. In January, half of days historically fall near 784.5 cfs, with the middle 80% of days between 344.7 and 2,489 cfs. The month-by-month table on this page gives the full range.
- How long has St Joe River at Calder, ID been measured?
- Discharge records at USGS site 12414500 begin in 1911, about 115 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for St Joe River at Calder, 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 St Joe River at Calder, ID?
- The gauge sits at 47.27444, -116.18889, in Idaho, in hydrologic subbasin 17010304, at an elevation of about 2,181 feet, draining roughly 1,025 square miles.
- Can I use St Joe River at Calder, 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 St Joe River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the St Joe River in full.
- St Joe River at Red Ives Ranger Station, ID 108 sq mi
- St Joe River at Calder, ID this page
- St Joe River at Ramsdell near St Maries, ID 1,721 sq mi