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?