Study of Aeration at Weirs and Cascades

Different research workers have pointed out that fall‐height, discharge, and tail waterdepth are important parameters for weir‐aeration. However, except for the equation proposed by the writer, none of the presented equations include these three parameters in one time. The validity of the Nakasone equation, based on laboratory tests in Japan, has been investigated by using measurement data from various weirs in the field, notably those on the river Meuse in The Netherlands and on the cascades of the drinking water plant of the city of The Hague. Results are satisfactory and encouraging. Details concerning the three parameters are treated in this article.