Maximum Potential Evapotranspiration Frequency

by J. L. McGuinness, Res. Statistician; Corn Belt Branch, Coshocton, OH,
Leslie H. Parmele, Res. Agric. Engr.; Northeast Branch, Univ. Park, PA,

Serial Information: Journal of the Irrigation and Drainage Division, 1972, Vol. 98, Issue 2, Pg. 207-214

Document Type: Journal Paper


Maximum 1-day, 3-day, 7-day, 15-day, and monthly values of evapotranspiration as measured by a lysimeter, ETM, and potential evapotranspiration as estimated by computed lake evaporation EL were found to be log-normally distributed. Equations were developed to estimate the two parameters of this distribution for both ETM and EL for any duration from 1 day to 1 month during the April to November season. A generalization of the data is made to a broad area of the east central United States.

Subject Headings: Evapotranspiration | Measuring instruments | Lakes | Probability distribution | Parameters (statistics) | Seasonal variations | Hydrologic data | United States

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