This tweet says it all:
And if that isn't enough to convince you, maybe this one will:
The official statement:
"Following heavy rainfall over the last 24 hours, significant and heavy flooding is affecting the Creamfields arena near Warrington.
"No serious casualties have been reported and Cheshire Police and partner agencies are supporting event organisers in ensuring the safety and welfare of festival goers during this time.
"All customers wishing to come to the festival today are advised that the event entrances are now closed.
"No entry to the festival is permitted from this point for all ticket types and ticket-holders, further updates will follow."