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This article in SSSAJ

  1. Vol. 34 No. 2, p. 355-357
    Received: Sept 5, 1969
    Accepted: Nov 28, 1969

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Instrument for Automatic Recording of Rainfall and Pan Evaporation1

  1. R. M. Dixon and
  2. R. M. Degn2



An economical combination rain gage and evaporation pan has been developed to provide a useful and dependable tool for soil and water management studies. Two simple direct-acting float devices were designed to provide alternate methods for sensitive water level control. The simpler of these devices controlled water level to ± 0.22 mm, whereas the more complex device controlled the level to ± 0.01 mm. This instrument, with minor modification, can be used to automatically monitor water supplied to a ponded-water infiltrometer or to a watertable lysimeter.

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