Mill Creek (Marion Co., OR) at North Salem High School at Salem

Highest listed crest 12.61 ftFlood stage 10.3 ft2 crests since 2012

The Mill Creek (Marion Co., OR) at North Salem High School at Salem crested at major flood stage 1 time among the 2 crests the National Weather Service lists from 2012 to 2025. The highest, 12.61 ft on January 19, 2012, was major flooding, 2.31 feet above flood stage. 1 other gauge on the Mill Creek (Marion Co., OR) crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest: 12.61 ft; January 19, 2012
Flood stage: 10.3 ft; Major flooding from 11.6 ft
Crests at major: 1; 45th of 100 gauges in Oregon
Most recent flood crest: December 19, 2025; 11.00 ft, minor flooding
Location: Marion County; Near Salem (1.3 mi), Keizer (4.2 mi), Independence (10.3 mi)
Identifiers: NWS MNSO3; No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Mill Creek (Marion Co., OR) at North Salem High School at Salem

Action stage	9.3	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	10.3	1	Dec 19, 2025	Minimal or no property damage, but possibly some public threat
Major flood stage	11.6	1	Jan 19, 2012	Extensive inundation of structures and roads

Every listed crest

2 crests from 2012 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Mill Creek (Marion Co., OR) at North Salem High School at Salem

1	Jan 19, 2012	12.61	+2.31	Major	—
2	Dec 19, 2025	11.00	+0.70	Minor	1,564

The worst floods along the Mill Creek (Marion Co., OR)

For this gauge's highest crests, the other gauges on the Mill Creek (Marion Co., OR) that crested above flood stage within a week.

January 19, 2012: 12.61 ft here, major flooding

Turner Road near SalemOR · Jan 19, 2012 · 14.10 ft · Major · its highest

December 19, 2025: 11.00 ft here, minor flooding

TurnerOR · Dec 19, 2025 · 12.13 ft · Major · its highest
Turner Road near SalemOR · Dec 19, 2025 · 12.70 ft · Minor
Spenner Road near SublimityOR · Dec 19, 2025 · 7.14 ft · Minor · its highest

Gauges on the Mill Creek (Marion Co., OR)

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Mill Creek (Marion Co., OR)

North Salem High School at Salem this gauge	OR	10.3	12.61 ft, Jan 19, 2012	1
Spenner Road near Sublimity	OR	5.5	7.14 ft, Dec 19, 2025	0
Turner	OR	10.8	12.13 ft, Dec 19, 2025	1
Turner Road near Salem	OR	12.3	14.10 ft, Jan 19, 2012	1

Other gauges in Marion County

Flood gauges in Marion County

Commercial Street in Salem	9.5	13.60 ft, Jan 19, 2012	1
Aumsville	10.8	13.00 ft, Dec 19, 2025	0
Monitor	14.0	16.34 ft, Dec 19, 2025	0
Spenner Road near Sublimity	5.5	7.14 ft, Dec 19, 2025	0
Turner	10.8	12.13 ft, Dec 19, 2025	1
Turner Road near Salem	12.3	14.10 ft, Jan 19, 2012	1
Mehama	11.0	17.50 ft, Nov 20, 1921	6
Salem Hospital	11.2	13.10 ft, Jan 19, 2012	1
Aurora	22.0	30.72 ft, Feb 8, 1996	5
Salem	28.0	47.00 ft, Dec 4, 1861	7

Marion County: every hazard · River floods across the country · Oregon

NOAA National Water Prediction Service, gauge MNSO3, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.