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A Portable Low-Intensity Rain Simulator for Field and Laboratory Use¹

ABSTRACT

A design is presented for construction of a dripping-type rain simulator that is useful for study of infiltration characteristics of surface-crusted soils and comparison of surface treatments for runoff inducement. The apparatus is lightweight, portable, and easily assumbled. Rain intensity can be varied between 4 and 100 mm/hr with adequate uniformity of distribution. Raindrop size and impact velocity, as well as rainfall intensity, can be controlled independently.

¹ Contribution from The National and University Institute of Agriculture, Rehovot, Israel. 1965 Ser., No. 938. This research was financed in part by a grant made by USDA under P.L. 480, Contract No. A10-SWC-36.

² Soil Ehysicist and Head of Soil Technology Division, respectively.

Received for publication October 4, 1965. Accepted for publication May 16, 1966.