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Scientific Investigations Report 2012–5017


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Geomorphic Setting, Aquatic Habitat, and Water-Quality Conditions of the Molalla River, Oregon, 2009–10


Table 4. Discharge values of given annual exceedance probabilities for peak flows for the Molalla River using data from U.S. Geological Survey gaging station at Canby, Oregon.


[Abbreviations: m3/s, cubic meter per second; ft3/s, cubic foot per second]


Annual
exceedance
probability		 Recurrence
interval
(years)		 Discharge
(m3/s) 		Discharge
(ft3/s)
0.5 2 379 13,400
0.2 5 570 20,100
0.1 10 705 24,900
0.04 25 885 31,300
0.02 50 1,020 36,200
0.01 100 1,170 41,300

First posted February 29, 2012

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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