The Queen and Duke of Edinburgh have heard first-hand accounts of the turmoil caused by the 2007 summer floods, during a visit to Hull.
Among a series of engagements, the royal couple met a number of people whose homes were inundated with water and who spent some months in caravans.
The Queen also viewed an exhibition of photographs showing flooded homes and water-filled gardens.
Earlier, the royal couple opened Hull's new transport interchange.
The Queen then opened a new oncology and haematology centre at Castle Hill Hospital.
The couple arrived by royal train at the city's transport interchange.
The Queen unveiled a plaque at the newly-refurbished station, which coordinates bus, coach and rail services.
More than 8,000 homes and businesses in Hull were wrecked after torrential rain in 2007.
Resident Charlene Kent and her six-year-old daughter Charleigh met the Queen at the Ferens Art Gallery.
Mrs Kent explained to the Queen how she was forced out of her home for six months and had to live with her in-laws.
She said afterwards: "The Queen took a great interest in the photographs of the houses.
"She couldn't believe it. She was quite shocked, I think.
"It was an absolute honour for her to come here. It was wonderful that she came to the city to talk to us about it."
The Costello Boys' Football Club told her how 140 of its 180 children were affected by the flooding.
The club won a series of awards as it struggled to get back on its feet.
Andy Winfield, from the club, said: "A lot of the lads were cooped up in caravans for weeks and the football training became important because it was somewhere to go.
"The Queen seemed very interested in what we've been doing."