We have three ponds in the garden: a small wildlife pond in the wildlife garden at the top of the garden, a slightly larger ornamental pond (in theory anyway) half way down and the fish pond at the bottom of the garden in between two patio areas. Both patio areas need relaying as I put the slabs down temporarily and then left them!
The wildlife pond is silted up - it is actually too small and I plan to at least deepen it, although I may well enlarge it, this year or next.
The ornamental pond is far from ornamental and needs planting from scratch. It is in a hollow after I got over enthusiastic when digging the hole.
The fish pond was greatly enlarged last year with a huge new filter incorporated. Unfortunately the UV bulb has gone (the device repeatedly gave me a shock anyway) and I plan to add a second filter with new UV lamp as soon as possible. We did once have waterlilies but the koi ate them; ditto all other plants!