From the FTGDCA:

The vets executive have made the call to cancel all vets games today. While the weather forecast looks ok for play, we have too many grounds that have been significantly impacted by the rain over the past couple of days and won’t be playable today. If we went ahead, we would be faced with a situation where half of the teams may play and the other half would have to be called off due to ground or pitch conditions. And there would be safety concerns for anyone who did make it onto the field today.