The Canterbury Jockey Club are calling on their patrons to have a moral conscious.

After heavy flooding on Saturday lead to the postponing of Cup Day, Riccarton racegoers have been offered a full refund on their tickets, but it seems to a bit of an empty gesture after Canterbury Jockey Club asked attendees to consider not claiming their share.

Staff spent close to half a million dollars setting up for the event and the club claims racegoers could still make the choice to support the club while it endures a 'challenging financial situation'.

CEO of Riccarton Park Racecourse Tim Mills joined Mike Hosking.

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