To prevent this and let the old sink pit location drain, there will be drain pipes around the house.
Drainage
Water (chapter n)
The wettest I’d seen since a long time. About 25mm water in about 4 hours? Water vacuuming for about three and a half hour and spending the rest of the time digging ditches to drain the garden to all directions that could still hold some water or were just lower than others.
Anything to get the water away from the house 😡.