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I'm in central Florida (lots of rain and sandy soil), and have had drainage issues around my house. I'm putting in french drains to resolve this. As shown in the image below, the drain (red) will be sloped down towards a lake. There's a little berm just before the lake. I'd rather not have the french drain exit out of the ground on the other side of the berm for aesthetic reasons.
Will it work to just terminate the french drain below ground?
Look at a typical "dry well" install - basically terminate the pipe into a blob of crushed rock, or an actual void/hole/tube punched full of holes, so the water can filter out. Just stopping the pipe underground will not work well.
In an essentially non-freezing climate there should be little problem with this - they can be done well in freezing climates, but it's more work and digging. If you use a open/void/hollow well it's easier to check/clear the pipe if that's ever needed.
