The nearby River Wharfe burst its banks and took down any barrier against the deluge.
The ground and car park were under more than 1.5 metres of water.
The club say that devastation is worse than 2015 and more damage than the five floods of 2020 and 2021.
Tadcaster flooding
With approved finances in place for the urgent Tadcaster Flood Alleviation Scheme following the devastation caused to the town generally in 2015, the club are still anxiously awaiting details from the Environment Agency of when this urgent and vital work is likely to happen.
After finally being able to gain access to the clubhouse on Wednesday morning, the damage was worse than imagined.
Nearly half a metre of water had entered the clubhouse, devastating fixtures and fittings.
Tadcaster flooding
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