Once the pond is in and filled (by water bowser), the pond will need to be topped up, since evaporation rate will be greater than the rain the pond will catch on it’s own. This shelter will double as a community facility, and will be a great location for events, with prime view of the pond, when folks want to keep out of the sun or rain.
If we do have a storage tank, it will probably be underground unlike in this visual. I suspect there won’t be enough water to have spare to store, but who knows? Weather is completely unpredictable now.
The frame of the shelter above the ground will be wood, while on and below the ground, it will be recycled plastic to avoid the problem of rot.