"In September this year, following a dry summer, a new 250-berth marina in Wiltshire (The Caen Hill Marina, west of Devizes) needed to pump water in from the River Avon - 8.5 million gallons of water to be exact. Using powerful pumps, and given that the project was categorised as low-risk, the pumping operation only took eight days. But some pumping requirements are much more complex and involve increased risk, particularly in areas where there is a huge tidal range." (Quoted from article)