Fanno Creek at 56th Ave - Portland

Highest listed crest 12.07 ftFlood stage 11.1 ft3 crests since 2015

The Fanno Creek at 56th Ave - Portland crested above flood stage 3 times among the 3 crests the National Weather Service lists from 2015 to 2016. The highest, 12.07 ft on December 7, 2015, was minor flooding, 0.97 feet above flood stage. 1 other gauge on the Fanno Creek crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest: 12.07 ft; December 7, 2015; 274 cubic feet per second
Flood stage: 11.1 ft; No major stage set
Crests at major: 0; 3 above flood stage
Most recent flood crest: November 24, 2016; 11.50 ft, minor flooding
Location: Multnomah County; Near Beaverton (4.0 mi), Tigard (5.1 mi), Portland (5.3 mi)
Identifiers: NWS FNNO3; USGS 14206900

Flood stages

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

Flood categories, Fanno Creek at 56th Ave - Portland

Action stage	10.5	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	11.1	3	Nov 24, 2016	Minimal or no property damage, but possibly some public threat

Every listed crest

3 crests from 2015 to 2016. Filled: at or above flood stage. Hover a crest for its date and stage.

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, Fanno Creek at 56th Ave - Portland

1	Dec 7, 2015	12.07	+0.97	Minor	274
2	Nov 24, 2016	11.50	+0.40	Minor	205
3	Oct 31, 2015	11.13	+0.03	Minor	160

The worst floods along the Fanno Creek

For this gauge's highest crests, the other gauges on the Fanno Creek that crested above flood stage within a week.

December 7, 2015: 12.07 ft here, minor flooding

DurhamOR · Dec 7, 2015 · 11.78 ft · Minor · its highest

November 24, 2016: 11.50 ft here, minor flooding

DurhamOR · Nov 25, 2016 · 10.69 ft · Minor

Gauges on the Fanno Creek

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Fanno Creek

56th Ave - Portland this gauge	OR	11.1	12.07 ft, Dec 7, 2015	0
Durham	OR	9.1	11.78 ft, Dec 7, 2015	0

Other gauges in Multnomah County

Flood gauges in Multnomah County

Troutdale	10.0	13.56 ft, Dec 7, 2015	0
Glisan St near Gresham	6.2	6.75 ft, Dec 7, 2015	0
Gresham	8.5	11.82 ft, Dec 7, 2015	0
Sycamore	11.0	15.33 ft, Dec 7, 2015	8
Portland	18.0	33.00 ft, Jun 7, 1894	7

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

NOAA National Water Prediction Service, gauge FNNO3, 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.