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Scientific Investigations Report 2013–5014


Evapotranspiration from Wetland and Open-Water Sites at Upper Klamath Lake, Oregon, 2008–2010


Table 11. Mean evapotranspiration at the study sites and reference evapotranspiration at the Agency Lake (AGKO) weather station during the study period (May 1, 2008–September 29, 2010), each year of study, and a full 3-year period (January 1, 2008–December 31 2010). 


[Full years of record in 2008 and 2010 were synthesized by using data from equivalent periods in 2009 to fill in missing periods in 2008 (January 1–April 30) and 2010 (September 30–December 31). The 3-year period is the mean of 2008, 2009, and 2010. Abbreviations: mm d -1 , millimeters per day; m yr -1 , meters per year]



Site Study period 2008 2009 2010 3-year period
(mm d–1) (m yr–1) (mm d–1) (m yr–1) (mm d–1) (m yr–1) (mm d–1) (m yr–1) (mm d–1) (m yr–1)
Bulrush 2.93 1.069 2.72 0.995 2.77 1.013 2.33 0.850 2.61 0.953
Mixed 2.79 1.018 2.65 0.966 2.54 0.929 2.23 0.814 2.47 0.903
Reference 3.51 1.283 3.34 1.221 3.10 1.132 2.96 1.083 3.14 1.145

First posted March 4, 2013

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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