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Hydrograph River at a Glance Download
Willamette River at Portland Stage (ft)Observed: 5 ft at 4:28PM Dec 15, 2014Observed: 4.5 ft at 6:43PM Dec 15, 2014Observed: 4.4 ft at 6:58PM Dec 15, 2014Observed: 4.4 ft at 7:13PM Dec 15, 2014Observed: 4.2 ft at 7:58PM Dec 15, 2014Observed: 4.2 ft at 8:43PM Dec 15, 2014Observed: 4.3 ft at 9:43PM Dec 15, 2014Observed: 4.5 ft at 10:13PM Dec 15, 2014Observed: 4.6 ft at 10:28PM Dec 15, 2014Observed: 4.8 ft at 10:58PM Dec 15, 2014Observed: 4.9 ft at 11:13PM Dec 15, 2014Observed: 5 ft at 11:28PM Dec 15, 2014Observed: 5.2 ft at 12:13AM Dec 16, 2014Observed: 5.2 ft at 12:28AM Dec 16, 2014Observed: 5.3 ft at 12:58AM Dec 16, 2014Observed: 5.3 ft at 1:28AM Dec 16, 2014Observed: 5.3 ft at 1:58AM Dec 16, 2014Observed: 5.3 ft at 2:13AM Dec 16, 2014Observed: 5.3 ft at 2:28AM Dec 16, 2014Observed: 5.3 ft at 2:43AM Dec 16, 2014Observed: 5.3 ft at 2:58AM Dec 16, 2014Observed: 5.2 ft at 3:13AM Dec 16, 2014Observed: 5.2 ft at 3:28AM Dec 16, 2014Observed: 5.2 ft at 3:43AM Dec 16, 2014Observed: 5.1 ft at 3:58AM Dec 16, 2014Observed: 5 ft at 4:13AM Dec 16, 2014Observed: 5 ft at 4:28AM Dec 16, 2014Observed: 4.8 ft at 5:13AM Dec 16, 2014Observed: 4.8 ft at 5:28AM Dec 16, 2014Observed: 4.6 ft at 5:58AM Dec 16, 2014Observed: 4.6 ft at 6:13AM Dec 16, 2014Observed: 4.5 ft at 6:58AM Dec 16, 2014Observed: 4.4 ft at 7:13AM Dec 16, 2014Observed: 4.4 ft at 7:28AM Dec 16, 2014Observed: 4.3 ft at 7:43AM Dec 16, 2014Observed: 4.3 ft at 7:58AM Dec 16, 2014Observed: 4.2 ft at 8:28AM Dec 16, 2014Observed: 4.2 ft at 8:43AM Dec 16, 2014Observed: 4.3 ft at 9:27AM Dec 16, 2014Observed: 4.6 ft at 10:12AM Dec 16, 2014Observed: 5 ft at 10:42AM Dec 16, 2014Observed: 5.9 ft at 12:28PM Dec 16, 2014Observed: 6 ft at 12:43PM Dec 16, 2014Observed: 6 ft at 12:58PM Dec 16, 2014Observed: 6 ft at 1:13PM Dec 16, 2014Observed: 6 ft at 1:28PM Dec 16, 2014Observed: 6 ft at 1:43PM Dec 16, 2014Observed: 5.6 ft at 2:13PM Dec 16, 2014Observed: 5.7 ft at 2:28PM Dec 16, 2014Observed: 5.5 ft at 3:28PM Dec 16, 2014Observed: 5 ft at 5:13PM Dec 16, 2014Observed: 4.7 ft at 6:13PM Dec 16, 2014Observed: 4.6 ft at 6:58PM Dec 16, 2014Observed: 4.5 ft at 7:13PM Dec 16, 2014Observed: 4.4 ft at 7:43PM Dec 16, 2014Observed: 4.3 ft at 7:58PM Dec 16, 2014Observed: 4.2 ft at 8:28PM Dec 16, 2014Observed: 4.2 ft at 8:43PM Dec 16, 2014Observed: 4.2 ft at 8:58PM Dec 16, 2014Observed: 4.2 ft at 9:13PM Dec 16, 2014Observed: 4.2 ft at 9:28PM Dec 16, 2014Observed: 4.2 ft at 9:43PM Dec 16, 2014Observed: 4.2 ft at 9:58PM Dec 16, 2014Observed: 4.2 ft at 10:13PM Dec 16, 2014Observed: 4.2 ft at 10:28PM Dec 16, 2014Observed: 4.3 ft at 10:43PM Dec 16, 2014Observed: 4.3 ft at 10:58PM Dec 16, 2014Observed: 4.4 ft at 11:13PM Dec 16, 2014Observed: 4.6 ft at 11:28PM Dec 16, 2014Observed: 4.7 ft at 11:43PM Dec 16, 2014Observed: 4.8 ft at 11:58PM Dec 16, 2014Observed: 4.9 ft at 12:13AM Dec 17, 2014Observed: 5 ft at 12:28AM Dec 17, 2014Observed: 5.2 ft at 12:42AM Dec 17, 2014Observed: 5.2 ft at 12:57AM Dec 17, 2014Observed: 5.3 ft at 1:12AM Dec 17, 2014Observed: 5.4 ft at 1:27AM Dec 17, 2014Observed: 5.5 ft at 1:57AM Dec 17, 2014Observed: 5.5 ft at 2:12AM Dec 17, 2014Observed: 5.5 ft at 2:27AM Dec 17, 2014Observed: 5.5 ft at 2:42AM Dec 17, 2014Observed: 5.5 ft at 3:12AM Dec 17, 2014Observed: 5.5 ft at 3:42AM Dec 17, 2014Observed: 5.5 ft at 3:57AM Dec 17, 2014Observed: 5.4 ft at 4:12AM Dec 17, 2014Observed: 5.4 ft at 4:27AM Dec 17, 2014Observed: 5.3 ft at 4:57AM Dec 17, 2014Observed: 5.2 ft at 5:12AM Dec 17, 2014Observed: 5.2 ft at 5:27AM Dec 17, 2014Observed: 5.1 ft at 5:42AM Dec 17, 2014Observed: 5.1 ft at 5:58AM Dec 17, 2014Observed: 5 ft at 6:13AM Dec 17, 2014Observed: 5 ft at 6:28AM Dec 17, 2014Observed: 4.9 ft at 6:43AM Dec 17, 2014Observed: 4.8 ft at 6:58AM Dec 17, 2014Observed: 4.8 ft at 7:13AM Dec 17, 2014Observed: 4.7 ft at 7:28AM Dec 17, 2014Observed: 4.6 ft at 7:58AM Dec 17, 2014Observed: 4.6 ft at 8:13AM Dec 17, 2014Observed: 4.5 ft at 8:28AM Dec 17, 2014Observed: 4.5 ft at 8:43AM Dec 17, 2014Observed: 4.4 ft at 8:58AM Dec 17, 2014Observed: 4.4 ft at 9:13AM Dec 17, 2014Observed: 4.4 ft at 9:43AM Dec 17, 2014Observed: 4.5 ft at 10:13AM Dec 17, 2014Observed: 4.6 ft at 10:28AM Dec 17, 2014Observed: 4.7 ft at 10:43AM Dec 17, 2014Observed: 4.9 ft at 10:58AM Dec 17, 2014Observed: 5.1 ft at 11:13AM Dec 17, 2014Observed: 5.3 ft at 11:28AM Dec 17, 2014Observed: 5.4 ft at 11:43AM Dec 17, 2014Observed: 5.6 ft at 11:58AM Dec 17, 2014Observed: 5.8 ft at 12:13PM Dec 17, 2014Observed: 6 ft at 12:28PM Dec 17, 2014Observed: 6.1 ft at 12:43PM Dec 17, 2014Observed: 6.2 ft at 12:58PM Dec 17, 2014Observed: 6.2 ft at 1:13PM Dec 17, 2014Observed: 6.3 ft at 1:28PM Dec 17, 2014Observed: 6.3 ft at 1:43PM Dec 17, 2014Observed: 6.3 ft at 2:13PM Dec 17, 2014Observed: 6.3 ft at 2:28PM Dec 17, 2014Observed: 6 ft at 3:13PM Dec 17, 2014Observed: 5.8 ft at 3:43PM Dec 17, 2014Observed: 5.7 ft at 4:13PM Dec 17, 2014Observed: 5.6 ft at 4:27PM Dec 17, 2014Observed: 4.7 ft at 7:27PM Dec 17, 2014Observed: 4.5 ft at 8:27PM Dec 17, 2014Observed: 4.4 ft at 9:27PM Dec 17, 2014Observed: 4.3 ft at 9:57PM Dec 17, 2014Observed: 4.4 ft at 11:57PM Dec 17, 2014Observed: 5.7 ft at 2:42AM Dec 18, 2014Observed: 5.7 ft at 2:57AM Dec 18, 2014Observed: 5.7 ft at 3:12AM Dec 18, 2014Observed: 5.6 ft at 3:57AM Dec 18, 2014Observed: 5.6 ft at 4:12AM Dec 18, 2014Observed: 5.6 ft at 4:27AM Dec 18, 2014Observed: 5.5 ft at 4:42AM Dec 18, 2014Observed: 5.4 ft at 5:27AM Dec 18, 2014Observed: 5.2 ft at 5:57AM Dec 18, 2014Observed: 5.2 ft at 6:12AM Dec 18, 2014Observed: 5.1 ft at 6:27AM Dec 18, 2014Observed: 5 ft at 6:42AM Dec 18, 2014Observed: 5 ft at 6:57AM Dec 18, 2014Observed: 4.9 ft at 7:12AM Dec 18, 2014Observed: 4.6 ft at 8:27AM Dec 18, 2014Observed: 4.3 ft at 10:27AM Dec 18, 2014Observed: 6.3 ft at 1:42PM Dec 18, 2014Observed: 6.4 ft at 2:42PM Dec 18, 2014Observed: 6.4 ft at 2:57PM Dec 18, 2014Observed: 6.4 ft at 3:12PM Dec 18, 2014Observed: 6.2 ft at 3:42PM Dec 18, 2014Observed: 6 ft at 4:12PM Dec 18, 2014Observed: 6 ft at 4:27PM Dec 18, 2014Observed: 5.9 ft at 4:42PM Dec 18, 2014Observed: 5.8 ft at 4:57PM Dec 18, 2014Observed: 5.8 ft at 5:12PM Dec 18, 2014Observed: 5.8 ft at 5:27PM Dec 18, 2014Observed: 5.7 ft at 5:42PM Dec 18, 2014Observed: 5.6 ft at 5:57PM Dec 18, 2014Observed: 5.6 ft at 6:12PM Dec 18, 2014Observed: 5.5 ft at 6:27PM Dec 18, 2014Observed: 5.4 ft at 6:57PM Dec 18, 2014Observed: 5.3 ft at 7:12PM Dec 18, 2014Observed: 5.2 ft at 7:42PM Dec 18, 2014Observed: 5.1 ft at 8:12PM Dec 18, 2014Observed: 5.1 ft at 8:27PM Dec 18, 2014Observed: 4.8 ft at 10:12PM Dec 18, 2014Observed: 4.8 ft at 10:27PM Dec 18, 2014Observed: 4.8 ft at 12:12AM Dec 19, 2014Observed: 4.9 ft at 12:42AM Dec 19, 2014Observed: 5.4 ft at 1:27AM Dec 19, 2014Observed: 5.9 ft at 2:12AM Dec 19, 2014Observed: 6.1 ft at 2:27AM Dec 19, 2014Observed: 6.5 ft at 3:12AM Dec 19, 2014Observed: 6.6 ft at 3:42AM Dec 19, 2014Observed: 6.6 ft at 4:57AM Dec 19, 2014Observed: 6.6 ft at 5:27AM Dec 19, 2014Observed: 6.5 ft at 5:57AM Dec 19, 2014Observed: 6.4 ft at 6:42AM Dec 19, 2014Observed: 6.4 ft at 6:57AM Dec 19, 2014Observed: 6.3 ft at 7:12AM Dec 19, 2014Observed: 6.1 ft at 7:57AM Dec 19, 2014Observed: 5.9 ft at 8:27AM Dec 19, 2014Observed: 5.8 ft at 8:42AM Dec 19, 2014Observed: 5.8 ft at 8:57AM Dec 19, 2014Observed: 5.7 ft at 9:27AM Dec 19, 2014Observed: 6 ft at 9:57AM Dec 19, 2014Observed: 5.5 ft at 10:12AM Dec 19, 2014Observed: 5.5 ft at 10:27AM Dec 19, 2014Observed: 5.4 ft at 11:42AM Dec 19, 2014Observed: 5.4 ft at 11:57AM Dec 19, 2014Observed: 5.7 ft at 12:12PM Dec 19, 2014Observed: 6.3 ft at 1:12PM Dec 19, 2014Observed: 7.1 ft at 2:12PM Dec 19, 2014Highest Observation: 7.3 ft at 2:42PM Dec 19, 2014Highest Observation: 7.3 ft at 2:57PM Dec 19, 2014Highest Observation: 7.3 ft at 3:12PM Dec 19, 2014Observed: 6.9 ft at 4:12PM Dec 19, 2014Observed: 6.6 ft at 4:42PM Dec 19, 2014Observed: 6.6 ft at 4:57PM Dec 19, 2014Observed: 6.5 ft at 5:12PM Dec 19, 2014Observed: 6.4 ft at 5:27PM Dec 19, 2014Observed: 6.2 ft at 6:12PM Dec 19, 2014Observed: 6.2 ft at 6:27PM Dec 19, 2014Observed: 6.1 ft at 6:57PM Dec 19, 2014Observed: 6.1 ft at 7:12PM Dec 19, 2014Observed: 6 ft at 7:27PM Dec 19, 2014Observed: 5.9 ft at 8:12PM Dec 19, 2014Observed: 5.6 ft at 9:27PM Dec 19, 2014Observed: 5.6 ft at 9:42PM Dec 19, 2014Observed: 5.5 ft at 10:12PM Dec 19, 2014Observed: 5.4 ft at 10:57PM Dec 19, 2014Observed: 5.4 ft at 1:42AM Dec 20, 2014Observed: 5.4 ft at 1:57AM Dec 20, 2014Observed: 5.8 ft at 2:27AM Dec 20, 2014Observed: 6 ft at 2:42AM Dec 20, 2014Observed: 6.2 ft at 2:57AM Dec 20, 2014Observed: 6.3 ft at 3:12AM Dec 20, 2014Observed: 6.7 ft at 3:42AM Dec 20, 2014Observed: 6.8 ft at 3:57AM Dec 20, 2014Observed: 6.8 ft at 5:42AM Dec 20, 2014Observed: 6.8 ft at 6:12AM Dec 20, 2014Observed: 6.7 ft at 6:27AM Dec 20, 2014Observed: 6.6 ft at 7:27AM Dec 20, 2014Observed: 6.5 ft at 7:57AM Dec 20, 2014Observed: 6.5 ft at 8:12AM Dec 20, 2014Observed: 6.3 ft at 8:42AM Dec 20, 2014Observed: 6.3 ft at 8:57AM Dec 20, 2014Observed: 6.2 ft at 9:12AM Dec 20, 2014Observed: 6.1 ft at 9:57AM Dec 20, 2014Observed: 6 ft at 11:12AM Dec 20, 2014Observed: 6.3 ft at 12:42PM Dec 20, 2014Observed: 6.6 ft at 12:57PM Dec 20, 2014Forecast: 7.96 ft 4:00PM Dec 20, 2014Forecast: 7.85 ft 5:00PM Dec 20, 2014Forecast: 7.71 ft 6:00PM Dec 20, 2014Forecast: 7.57 ft 7:00PM Dec 20, 2014Forecast: 7.4 ft 8:00PM Dec 20, 2014Forecast: 7.22 ft 9:00PM Dec 20, 2014Forecast: 7.08 ft 10:00PM Dec 20, 2014Forecast: 6.97 ft 11:00PM Dec 20, 2014Forecast: 6.87 ft 12:00AM Dec 21, 2014Forecast: 6.87 ft 1:00AM Dec 21, 2014Forecast: 6.97 ft 2:00AM Dec 21, 2014Forecast: 7.29 ft 3:00AM Dec 21, 2014Forecast: 7.85 ft 4:00AM Dec 21, 2014Forecast: 8.42 ft 5:00AM Dec 21, 2014Forecast: 8.84 ft 6:00AM Dec 21, 2014Forecast: 9.09 ft 7:00AM Dec 21, 2014Forecast: 9.23 ft 8:00AM Dec 21, 2014Forecast: 9.3 ft 9:00AM Dec 21, 2014Forecast: 9.41 ft 10:00AM Dec 21, 2014Forecast: 9.55 ft 11:00AM Dec 21, 2014Forecast: 9.8 ft 12:00PM Dec 21, 2014Forecast: 10.29 ft 1:00PM Dec 21, 2014Forecast: 10.96 ft 2:00PM Dec 21, 2014Forecast: 11.74 ft 3:00PM Dec 21, 2014Forecast: 12.34 ft 4:00PM Dec 21, 2014Forecast: 12.69 ft 5:00PM Dec 21, 2014Forecast: 12.87 ft 6:00PM Dec 21, 2014Forecast: 13.01 ft 7:00PM Dec 21, 2014Forecast: 13.22 ft 8:00PM Dec 21, 2014Forecast: 13.43 ft 9:00PM Dec 21, 2014Forecast: 13.68 ft 10:00PM Dec 21, 2014Forecast: 13.82 ft 11:00PM Dec 21, 2014Forecast: 13.93 ft 12:00AM Dec 22, 2014Forecast: 14 ft 1:00AM Dec 22, 2014Forecast: 14.1 ft 2:00AM Dec 22, 2014Forecast: 14.25 ft 3:00AM Dec 22, 2014Forecast: 14.46 ft 4:00AM Dec 22, 2014Forecast: 14.67 ft 5:00AM Dec 22, 2014Forecast: 14.81 ft 6:00AM Dec 22, 2014Forecast: 14.92 ft 7:00AM Dec 22, 2014Forecast: 14.92 ft 8:00AM Dec 22, 2014Forecast: 14.92 ft 9:00AM Dec 22, 2014Forecast: 14.88 ft 10:00AM Dec 22, 2014Forecast: 14.85 ft 11:00AM Dec 22, 2014Forecast: 14.77 ft 12:00PM Dec 22, 2014Forecast: 14.77 ft 1:00PM Dec 22, 2014Forecast: 14.77 ft 2:00PM Dec 22, 2014Forecast: 14.85 ft 3:00PM Dec 22, 2014Forecast: 14.95 ft 4:00PM Dec 22, 2014Forecast: 15.06 ft 5:00PM Dec 22, 2014Highest Forecast: 15.16 ft 6:00PM Dec 22, 2014Highest Forecast: 15.16 ft 7:00PM Dec 22, 2014Forecast: 15.09 ft 8:00PM Dec 22, 2014Forecast: 14.99 ft 9:00PM Dec 22, 2014Forecast: 14.85 ft 10:00PM Dec 22, 2014Forecast: 14.67 ft 11:00PM Dec 22, 2014Forecast: 14.49 ft 12:00AM Dec 23, 2014Forecast: 14.32 ft 1:00AM Dec 23, 2014Forecast: 14.17 ft 2:00AM Dec 23, 2014Forecast: 14.07 ft 3:00AM Dec 23, 2014Forecast: 14.07 ft 4:00AM Dec 23, 2014Forecast: 14.1 ft 5:00AM Dec 23, 2014Forecast: 14.21 ft 6:00AM Dec 23, 2014Forecast: 14.25 ft 7:00AM Dec 23, 2014Forecast: 14.28 ft 8:00AM Dec 23, 2014Forecast: 14.21 ft 9:00AM Dec 23, 2014Forecast: 14.14 ft 10:00AM Dec 23, 2014Forecast: 14.03 ft 11:00AM Dec 23, 2014Forecast: 13.93 ft 12:00PM Dec 23, 2014Forecast: 13.79 ft 1:00PM Dec 23, 2014Forecast: 13.72 ft 2:00PM Dec 23, 2014Forecast: 13.72 ft 3:00PM Dec 23, 2014Forecast: 13.79 ft 4:00PM Dec 23, 2014Forecast: 13.89 ft 5:00PM Dec 23, 2014Forecast: 14 ft 6:00PM Dec 23, 2014Forecast: 14.07 ft 7:00PM Dec 23, 2014Forecast: 14.07 ft 8:00PM Dec 23, 2014Forecast: 13.96 ft 9:00PM Dec 23, 2014Forecast: 13.82 ft 10:00PM Dec 23, 2014Forecast: 13.68 ft 11:00PM Dec 23, 2014Forecast: 13.47 ft 12:00AM Dec 24, 2014Forecast: 13.29 ft 1:00AM Dec 24, 2014Forecast: 13.15 ft 2:00AM Dec 24, 2014Forecast: 12.97 ft 3:00AM Dec 24, 2014Forecast: 12.9 ft 4:00AM Dec 24, 2014Forecast: 12.9 ft 5:00AM Dec 24, 2014Forecast: 12.97 ft 6:00AM Dec 24, 2014Forecast: 13.08 ft 7:00AM Dec 24, 2014Forecast: 13.15 ft 8:00AM Dec 24, 2014Forecast: 13.19 ft 9:00AM Dec 24, 2014Forecast: 13.12 ft 10:00AM Dec 24, 2014Forecast: 13.01 ft 11:00AM Dec 24, 2014Forecast: 12.9 ft 12:00PM Dec 24, 2014Forecast: 12.76 ft 1:00PM Dec 24, 2014Forecast: 12.66 ft 2:00PM Dec 24, 2014Forecast: 12.59 ft 3:00PM Dec 24, 2014Forecast: 12.62 ft 4:00PM Dec 24, 2014Forecast: 12.76 ft 5:00PM Dec 24, 2014Forecast: 12.97 ft 6:00PM Dec 24, 2014Forecast: 13.08 ft 7:00PM Dec 24, 2014Forecast: 13.05 ft 8:00PM Dec 24, 2014Forecast: 12.94 ft 9:00PM Dec 24, 2014Forecast: 12.8 ft 10:00PM Dec 24, 2014Forecast: 12.66 ft 11:00PM Dec 24, 2014Forecast: 12.48 ft 12:00AM Dec 25, 2014Forecast: 12.3 ft 1:00AM Dec 25, 2014Forecast: 12.13 ft 2:00AM Dec 25, 2014Forecast: 11.99 ft 3:00AM Dec 25, 2014Forecast: 11.88 ft 4:00AM Dec 25, 2014Forecast: 11.81 ft 5:00AM Dec 25, 2014Forecast: 11.84 ft 6:00AM Dec 25, 2014Forecast: 12.02 ft 7:00AM Dec 25, 2014Forecast: 12.2 ft 8:00AM Dec 25, 2014Forecast: 12.3 ft 9:00AM Dec 25, 2014Forecast: 12.23 ft 10:00AM Dec 25, 2014Forecast: 12.09 ft 11:00AM Dec 25, 2014Forecast: 11.99 ft 12:00PM Dec 25, 2014Forecast: 11.81 ft 1:00PM Dec 25, 2014Forecast: 11.67 ft 2:00PM Dec 25, 2014Forecast: 11.53 ft 3:00PM Dec 25, 2014PRTO3(plotting HGIRR) Graph Created (3:03PM Dec 20, 2014)ObservedForecast (issued 10:13AM Dec 20)Latest observed value: 6.6 ft at 12:57 PM PST 20-Dec-2014. Flood Stage is 18 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Gauge reading affected by ocean tides.

NOTE: Forecasts for the Willamette River at Portland are issued routinely year-round.

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Upstream Gauge - below Falls at Oregon City Upstream Gauge Downstream Gauge Downstream Gauge - at St. Helens
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 24
Flood Stage: 18
Action Stage: 0
Low Stage (in feet): 1

Historic Crests
(1) 33.00 ft on 06/07/1894
(2) 30.00 ft on 06/14/1948
(3) 30.00 ft on 06/01/1948
(4) 29.80 ft on 12/25/1964
(5) 28.70 ft on 02/06/1890
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 28.55 ft on 02/09/1996
(2) 18.90 ft on 02/24/1986
(3) 20.10 ft on 02/21/1982
(4) 18.27 ft on 12/16/1977
(5) 23.84 ft on 01/18/1974
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -2.20 ft on 12/08/1990
(2) -0.58 ft on 07/14/2001
(3) -0.51 ft on 10/10/2001
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
30 Above 30.0 ft, Expect flooding of downtown Portland from Park Ave east to the Willamette and north of Burnside. Historically, Union Station begins to flood at this point and rail traffic will likely be impacted. Expect flooding of Oaks Park, along with moorages and industrial areas from Oregon City through downtown Portland into industrial NW Portland.
28.8 At 28.8 ft, Expect the river level to reach the top of the lowest point of the downtown Portland sea-wall. Flooding of some portions of Waterfront Park is possible at this and higher stages.
27 Above 27.0 ft, Expect flooding of Front Street near the Burnside Bridge.
26 Above 26.0 ft, Expect flooding of numerous structures along the Willamette river from Oregon city to the confluence with the Columbia.
24 Above 24.0 ft, Expect localized flooding in the Northwest Portland industrial area.
22 Above 22.0 ft, Expect minor localized flooding along the Willamette from Oregon City to the confluence with the Columbia.
18 Above 18.0 ft, Expect minor flooding of localized areas along the lower willamette. Flooding is mainly confined to the islands on the willamette river from oregon city to the confluence with the columbia.
About This Location Collapse

Latitude: 45.518333° N, Longitude: 122.671111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 18 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 1.55 19.6 Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
Low Water Alerts are issued for stages below 1.0'
Archived/Historical Data at USACE DataQuery
10-day Forecast/Trend, Northwest River Forecast Center
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Portland Weather Forecast Office
5241 NE 122nd Avenue
Portland, OR 97230-1089
(503) 261-9246
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Page last modified: 20-Nov-2014 2:52 AM
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