Our 7 houses need a new rainwater drain so the roof water doesnt flood the septic tank.

At first I though having a soakaway near my raspberries would add more water to the plants.

But maybe digging the hole,
(and the resulting water making new underground drainage)
would mean that in drought conditions the garden would get drier than if i didnt have this hole.

Should the soakaway be near the fruit plants or as far away as is possible?

George