1) Draw 2) Flowing through a floodgate 3) Opening the floodgates 4) Take out 
In syntax, sluicing is a type of ellipsis that occurs in both direct and indirect interrogative clauses. The ellipsis is introduced by a wh-expression, whereby in most cases, everything except the wh-expression is elided from the clause. Sluicing has been studied in detail in recent years and is therefore a relatively well understood type of ellip...
• (p. pr. & vb. n.) of Sluice
(from the article `hydraulic mining`) ...is the process of breaking up material and suspending it in a slurry. This is often done by using a large water cannon called a giant or monitor. ... In sluicing or hydraulicking methods, a slightly sloping wooden trough called a box sluice, or a ditch cut in hard gravel or rock called a ground ....
[adj] - pouring from or as if from a sluice
adjective pouring from or as if from a sluice; `the sluicing rain`