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Station operated in cooperation with the city of Portland.
14206900 FANNO CREEK AT 56TH AVENUE, PORTLAND, OR
LOCATION.--Lat 45° 29'17", long 122° 44'01", in NE 1/4 NW 1/4 sec.18, T.1 S., R.1 E.,
Multnomah County, Hydrologic Unit 17090010, on bridge at SW 56th Ave., in
Portland, and at mile 11.9.
DRAINAGE AREA.--2.37 mi2.
PERIOD OF RECORD.--Annual maximums, 1975-77. October 1990 to current year.
GAGE.--Water-stage recorder. Elevation of gage is 250 ft above NGVD of 1929, from
topographic map.
REMARKS.--No regulation or diversion upstream from station.
EXTREMES FOR PERIOD OF RECORD--Maximum discharge, 733 ft3/s Feb. 8, 1996, gage height,
13.2 ft, from floodmark, from rating curve extended above 200 ft3/s; minimum
discharge, 0.01 ft3/s Sept. 4, 2001.
NOTE: The most current shifted rating for this site can be found at USGS Rating Depot website.
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