USGS Streamgage 14171600
Willamette River at Corvallis, OR
Willamette River at Corvallis, OR is USGS streamgage 14171600 in Oregon, monitoring river discharge in hydrologic subbasin 17090003. It sits on the Willamette River, alongside 10 other gauges Rivermatics tracks on the same river. It drains a watershed of about 4,420 square miles. Discharge records at this site go back to 2009. Typical flow runs near 5,010.3 cfs in July and 13,133.3 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, alongside daily high and low water-temperature forecasts.
View live conditions & forecast →
Gauge details
- State
- Oregon
- Drainage area
- 4,420 sq mi
- Subbasin (HUC-8)
- 17090003
- Coordinates
- 44.56636, -123.25681
- USGS site number
- 14171600
- Records begin
- 2009-10-01 (17 years)
- Rivermatics forecast
- 14-day flow outlook + water temperature
14-day flow forecast
Based on observations through for Willamette River at Corvallis, OR. 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 |
|---|---|---|---|---|
| 4,266 | 4,311 | 4,356 | ||
| 4,356 | 4,532 | 5,051 | ||
| 4,367 | 4,600 | 5,367 | ||
| 4,336 | 4,571 | 5,352 | ||
| 4,279 | 4,497 | 5,225 | ||
| 4,228 | 4,447 | 5,180 | ||
| 4,185 | 4,411 | 5,147 | ||
| 4,151 | 4,390 | 5,154 | ||
| 4,133 | 4,382 | 5,157 | ||
| 4,107 | 4,360 | 5,103 | ||
| 4,083 | 4,344 | 5,102 | ||
| 4,066 | 4,333 | 5,064 | ||
| 4,064 | 4,332 | 5,012 | ||
| 4,040 | 4,322 | 5,035 |
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 17 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 | 8,741.9 | 18,193.5 | 44,061.3 | |
| February | 7,053.6 | 12,258.6 | 36,071.4 | |
| March | 6,638.1 | 13,119.4 | 36,941.9 | |
| April | 6,725 | 13,133.3 | 33,116.7 | |
| May | 5,598.1 | 10,016.5 | 21,054.8 | |
| June | 4,828 | 7,352.7 | 18,517.3 | |
| July | 3,974.8 | 5,010.3 | 7,431.6 | |
| August | 3,827.1 | 5,193.5 | 6,386.8 | |
| September | 3,950.7 | 5,454.7 | 7,008 | |
| October | 4,539.7 | 7,092.6 | 11,723.2 | |
| November | 4,561.3 | 10,902 | 22,390 | |
| December | 5,697.4 | 14,335.8 | 43,751.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Willamette River at Corvallis, OR normally run highest?
- January, on the long-term record. The median daily flow that month is about 18,193.5 cfs, against 5,010.3 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Willamette River at Corvallis, OR?
- It depends on the month. In January, half of days historically fall near 18,193.5 cfs, with the middle 80% of days between 8,741.9 and 44,061.3 cfs. The month-by-month table on this page gives the full range.
- How long has Willamette River at Corvallis, OR been measured?
- Discharge records at USGS site 14171600 begin in 2009, about 17 years, covering roughly 6,153 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Willamette River at Corvallis, OR?
- 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. A companion model forecasts each day's water-temperature high and low. 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 Willamette River at Corvallis, OR?
- The gauge sits at 44.56636, -123.25681, in Oregon, in hydrologic subbasin 17090003, draining roughly 4,420 square miles.
- Can I use Willamette River at Corvallis, OR 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 Willamette River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Willamette River in full.
- Willamette River at Eugene, OR 2,040 sq mi
- Willamette River at Owosso Bridge at Eugene, OR 2,050 sq mi
- Willamette River at Harrisburg, OR 3,420 sq mi
- Willamette River at Corvallis, OR this page
- Willamette River at Albany, OR 4,840 sq mi
- Willamette River at Salem, OR 7,280 sq mi
- Willamette River at Newberg, OR 8,350 sq mi
- Willamette River above Falls, at Oregon City, OR 10,000 sq mi
- Willamette River below Falls, at Oregon City, OR 10,000 sq mi
- Willamette River at Portland, OR 11,200 sq mi
- Willamette River at Keizer, OR