Rivermatics

USGS Streamgage 14189000

Santiam River at Jefferson, OR

Santiam River at Jefferson, OR is USGS streamgage 14189000 in Oregon, monitoring river discharge in hydrologic subbasin 17090005. It sits on the Santiam River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 1,790 square miles. Discharge records at this site go back to 1907. Typical flow runs near 1,789.7 cfs in July and 7,783 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.

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Gauge details

State
Oregon
Drainage area
1,790 sq mi
Subbasin (HUC-8)
17090005
Coordinates
44.71472, -123.01425
USGS site number
14189000
Records begin
1907-10-01 (119 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Santiam River at Jefferson, 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.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
2,782 2,902 3,036
2,728 2,915 3,118
2,745 3,076 3,613
2,701 3,072 3,562
2,638 3,085 3,670
2,544 3,090 3,778
2,462 3,082 3,811
2,408 3,095 3,915
2,364 3,118 4,006
2,332 3,142 4,096
2,306 3,145 4,155
2,260 3,129 4,187
2,226 3,120 4,238
2,190 3,118 4,283

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

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 4,394.2 11,571.6 28,567.7
February 3,731.4 8,184.1 23,737.9
March 3,871.9 7,493.9 19,341.9
April 4,087.3 7,783 14,666.7
May 3,191.9 6,490.3 13,032.3
June 2,001.3 3,671.7 8,511.7
July 1,079.6 1,789.7 2,813.2
August 642.2 1,341 2,053.5
September 633.9 2,334.3 3,781.3
October 986.8 3,802.9 7,836.1
November 3,037.3 8,745 21,726.7
December 4,210 11,845.2 29,377.4

All values in cubic feet per second (cfs).

Common questions

When does Santiam River at Jefferson, OR normally run highest?
December, on the long-term record. The median daily flow that month is about 11,845.2 cfs, against 1,341 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 Santiam River at Jefferson, OR?
It depends on the month. In January, half of days historically fall near 11,571.6 cfs, with the middle 80% of days between 4,394.2 and 28,567.7 cfs. The month-by-month table on this page gives the full range.
How long has Santiam River at Jefferson, OR been measured?
Discharge records at USGS site 14189000 begin in 1907, about 119 years, covering roughly 9,198 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Santiam River at Jefferson, 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. 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 Santiam River at Jefferson, OR?
The gauge sits at 44.71472, -123.01425, in Oregon, in hydrologic subbasin 17090005, draining roughly 1,790 square miles.
Can I use Santiam River at Jefferson, 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 Santiam River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Santiam River in full.

Other gauges in this subbasin