Willamette River at Harrisburg, OR

Gauge details

State

Oregon

Drainage area

3,420 sq mi

Subbasin (HUC-8)

17090003

Coordinates

44.2704, -123.1737

USGS site number

14166000

Records begin

1861-12-01 (165 years)

Rivermatics forecast

14-day flow outlook + water temperature

14-day flow forecast

Based on observations through September 10 for Willamette River at Harrisburg, 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.

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 82 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

All values in cubic feet per second (cfs).

Common questions

When does Willamette River at Harrisburg, OR normally run highest?

January, on the long-term record. The median daily flow that month is about 16,725.8 cfs, against 4,653.9 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 Harrisburg, OR?

It depends on the month. In January, half of days historically fall near 16,725.8 cfs, with the middle 80% of days between 6,587.1 and 40,858.1 cfs. The month-by-month table on this page gives the full range.

How long has Willamette River at Harrisburg, OR been measured?

Discharge records at USGS site 14166000 begin in 1861, about 165 years, covering roughly 9,201 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 Harrisburg, 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 Harrisburg, OR?

The gauge sits at 44.2704, -123.1737, in Oregon, in hydrologic subbasin 17090003, draining roughly 3,420 square miles.

Can I use Willamette River at Harrisburg, 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 this page
• Willamette River at Corvallis, OR 4,420 sq mi
• 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

Other gauges in this subbasin

• Long Tom River near Noti, OR
• Long Tom River near Alvadore, OR
• Long Tom River at Monroe, OR
• Marys River near Philomath, OR
• Willamette River at Corvallis, OR
• Calapooia River at Albany, OR
• Willamette River at Albany, OR
• Luckiamute River near Suver, OR