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Hydrograph River at a Glance Download
Clackamas River near Estacada Stage (ft)Flow (cfs)Observed: 13.8 ft at 8:00AM Apr 16, 2018Highest Observation: 13.81 ft at 8:15AM Apr 16, 2018Observed: 13.8 ft at 8:30AM Apr 16, 2018Observed: 13.8 ft at 8:45AM Apr 16, 2018Forecast: 12.99 ft 11:00AM Apr 21, 2018Forecast: 12.95 ft 5:00PM Apr 21, 2018Forecast: 12.88 ft 11:00PM Apr 21, 2018Forecast: 12.81 ft 5:00AM Apr 22, 2018Forecast: 12.75 ft 11:00AM Apr 22, 2018Forecast: 12.69 ft 5:00PM Apr 22, 2018Forecast: 12.65 ft 11:00PM Apr 22, 2018Forecast: 12.66 ft 5:00AM Apr 23, 2018Forecast: 12.68 ft 11:00AM Apr 23, 2018Forecast: 12.65 ft 5:00PM Apr 23, 2018Forecast: 12.68 ft 11:00PM Apr 23, 2018Forecast: 12.77 ft 5:00AM Apr 24, 2018Forecast: 12.87 ft 11:00AM Apr 24, 2018Forecast: 12.89 ft 5:00PM Apr 24, 2018Forecast: 12.91 ft 11:00PM Apr 24, 2018Forecast: 13.03 ft 5:00AM Apr 25, 2018Forecast: 13.13 ft 11:00AM Apr 25, 2018Forecast: 13.2 ft 5:00PM Apr 25, 2018Forecast: 13.24 ft 11:00PM Apr 25, 2018Highest Forecast: 13.31 ft 5:00AM Apr 26, 2018USGS--Water Resources of the United StatesESTO3(plotting HGIRG) Graph Created (7:48AM Apr 21, 2018)ObservedForecast (issued 5:22PM Apr 20)Latest observed value: 13.8 ft at 8:45 AM PDT 16-Apr-2018. Flood Stage is 20 ft
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Tabular Data (UTC)
Tabular Data (PDT)
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Datum: Not Available
NOTE: Gauge reading affected by reservoir operations.

NOTE: Forecasts for the Clackamas River near Estacada are issued routinely year-round.

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Upstream Gauge - above Three Lynx Creek Upstream Gauge Downstream Gauge Downstream Gauge - near Oregon City
Flood Categories (in feet)
Major Flood Stage: 25
Moderate Flood Stage: 0
Flood Stage: 20
Action Stage: 18
Low Stage (in feet): 0

Historic Crests
(1) 30.36 ft on 12/22/1964
(2) 27.57 ft on 02/07/1996
(3) 25.52 ft on 01/21/1972
(4) 25.03 ft on 01/16/1974
(5) 24.96 ft on 02/10/1961
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(P): Preliminary values subject to further review.

Recent Crests
(1) 21.21 ft on 10/22/2017
(2) 20.87 ft on 12/18/2015
(3) 21.17 ft on 12/07/2015
(4) 20.30 ft on 12/21/2014
(5) 20.03 ft on 11/20/2012
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:14
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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
28 Above 28 ft, expect major flooding along the river from Estacada downstream to the confluence with the Willamette River. The most severe impacts will likely be in the Carver area, along with the developed areas near the confluence of the Clackamas and Willamette Rivers.
25 Above 25 ft, expect major flood damage at parks along the river. Also expect flooding in Carver, along with numerous homes along the Clackamas River from Estacada downstream to the confluence with the Willamette.
23 Above 23 ft, expect flooding to begin in the light industrial areas near the confluence of the Clackamas and Willamette Rivers. A trailer court at Carver is threatened at this point. Some access roads are flooded and closed above this level from Estacada downstream to Carver.
21 Above 21 ft, expect widespread flooding of lowland and agricultural land from Estacada to Carver. Numerous parks along the river are also threatened with flooding.
20 Above 20 ft, expect lowland flooding from Estacada several miles downstream to Carver.
(1) USGS gage house
(2) Upstream view with River Mill Dam in distance
(3) Downstream view
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Latitude: 45.300556° N, Longitude: 122.354444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 20 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 286.93 ft 306.93 ft  

Current/Historical Observations:

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Archived/Historical Data at USACE DataQuery
10-day Forecast/Trend, Northwest River Forecast Center
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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.
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Page last modified: 21-Dec-2016 10:35 PM
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