Posted: Yesterday at 17:54
I cheated with my pond/bog, I could because it's fairly small, the whole thing about 2m x 3m.
Instead of shelves, I hollowed shallower areas around the sides, lined it all then chucked wet aquatic compost in the side areas and in the bottom, planted up and then covered it all in pebbles which took care of the level and some awkward bits of liner.
It went a bit murky at first but cleared and when it rains now it doesn't cloud up. The rainwater can drain from the bog into the pond or if I top up the pond myself it seeps into the bog area.
Cons of it were losing some of the depth and width and also the amount of pebbles, rocks and stones I had to buy/ dig up/ acquire from friends.