Make a new pond
You could take the opportunity to dig a new pond, perhaps with adjacent bog garden - the spring rains should help to fill it. We recommend a minimum depth of 60cm (2ft) at the deepest point, to reduce the risk of the pond freezing to its full depth.
Gently sloping contours between the shallow and deep areas, and between the bank and the water, are more wildlife-friendly, and help to make marginal plantings appear natural.
If making a formal pond with steep sides, fix a wildlife ramp to one edge made from a plank of wood wrapped in chicken wire or with grooves notched into it. Check any existing pond ramps are still in place so that wildlife can easily get in and out of the water.
Grille coverings (either simple meshes or bespoke features) can protect young children from accidents. The size of the mesh can be judged in order to prevent hazard, but to also allow access for wildlife, and to preserve the aesthetic charm of the pond.