USGS · 14187500

SOUTH SANTIAM RIVER

USGS · 14187500LIVE

SOUTH SANTIAM RIVER AT WATERLOO, OR

LINN COUNTY, OR44.4985°N, -122.8234°W Updated 18 hr ago

FLOW RATE

1,026cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

1,026cfs 1.0% vs avg

Optimal band: 872–1,180 cfs

PERIOD HIGH

1,168cfs

PERIOD LOW

996cfs

RUNNABLE

100%

last 7 day in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

23.8in

-35% vs normal

23.83 in of precipitation so far this year, 35% below the 30-year normal of 36.81 in for this point in the season.

YTD Total

23.8in

This year so far

Normal to Date

36.8in

30-yr average

Typical Range

25.7–46.3in

10th–90th pct YTD

Departure

-35%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 4.56" · normal 8.98" (4.6–13.6)

Jan

Feb: 6.77" · normal 6.92" (3.5–12.0)

Feb

Mar: 4.30" · normal 7.84" (4.3–12.3)

Mar

Apr: 4.80" · normal 6.24" (3.8–9.0)

Apr

May: 1.32" · normal 4.12" (1.5–6.7)

May

Jun: 2.08" · normal 2.58" (1.1–4.2)

Jun

Jul: 0.01" (so far)· normal 0.57" (0.1–1.3)

Jul

Aug: normal 0.73" (0.0–1.5)

Aug

Sep: normal 2.25" (0.2–4.7)

Sep

Oct: normal 5.68" (2.4–9.1)

Oct

Nov: normal 9.38" (4.1–13.7)

Nov

Dec: normal 10.45" (6.0–14.4)

Dec

Baseline 1991–2020 · Source: Open-Meteo03:55 PM

Your History · SOUTH SANTIAM RIVER AT WATERLOO, OR

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Station Location

44.4985, -122.8234

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DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC

Site #14187500·USGS

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