Weekly, monthly and annual evaporations for Elk City Lake

Yun Sheng Yu, H. Vernon Knapp

Research output: Contribution to journalArticlepeer-review


Weekly evaporations over a period of 11 years for Elk City Lake in Southeast Kansas are estimated by using the mass-transfer method. A mathematical model is developed for the weekly evaporation series. The model consists of a deterministic periodic component and a stochastic component, represented, respectively, by a Fourier approximation and an ARMA model. Monthly and annual lake evaporations are also obtained. A comparison of the distribution of the mean monthly lake evaporation with that for Class-A pan evaporation shows clearly the hysteresis effect of heat storage in the lake. The estimated annual lake evaporation at a 2% chance of exceedence is 1713.2 mm with a standard deviation of 131.0 mm. The effects of errors in the estimated model parameters and the input variables to the mass-transfer equation on evaporation estimates are determined through sensitivity analyses.

Original languageEnglish (US)
Pages (from-to)93-110
Number of pages18
JournalJournal of Hydrology
Issue number1-2
StatePublished - Sep 15 1985

ASJC Scopus subject areas

  • Water Science and Technology


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