TOLEDO In Ohio it's the law to have a fence around an in ground pool. For private pools in your own yard the regulation is 48 inches or four feet. It has to surround the pool on all sides and have a gate that can lock. If it's a public pool the gate has to be six feet tall with a lockable gate. There are no laws requiring gates around ponds. If you have an above ground pool then you have to either have the four foot gate or a ladder that can be removed or locked up.