Abstract: Experiments are conducted on circular, vertical intakes drawing from two-layer stratified sources. Arguments are presented to suggest that current definitions of critical drawdown, as the condition under which the upper ...

Abstract: An experimental study of selective withdrawal using intakes in partially submerged structures is described. This study examines circular intake structures located in two layer‐stratified bodies of still water. Results are ...

Abstract: Experiments are described for vertical intakes projecting above the bed and fitted with a horizontal cap and vertical collar. These show that the internal geometry of the intake has no effect on drawdown of a surface layer ...