Wildlife friendly pond - can they overflow in heavy rain
I need a bit of advice. I am having a 2.5 x 2.5m wildlife friendly pond created but am a little worried about whether it is likely to overflow with heavy rain. My landscaper has said it will be fine but I have read many articles that state they can overflow and I wouldn't want all my planting around and nearby the pond washed away. Has anyone ever had a problem with this.