9.This Niagara Falls with its sheer thunderous drop has been an illusive barrier between this and other lakes, and the St. Lawrence sluicing out its eastern end draws Ontario's attention seaward.
10.Thousands of factories pour their poison into the Mediterranean and almost every city, town and village on the coast sluices its sewage, untreated, into the sea.
12.It is a creek or inlet from the Thames, and can always be filled at high water by opening the sluices at the Lead Mills from which it took its old name.
13.By modelling what happens to surface water when sluice gates and barriers are opened and closed, the twin lets everyone from water companies to individual landowners test the possible consequences of action and inaction.
14.It does mean taking water to rinse something or wash something off, but it's used in a very particular way in connection with a noun called a " sluice" or a " sluice box." A " sluice box" is a tool that people use to find gold.