Hi Harvey,
There are 11 large capacity retention ponds in Loidahar that support the village as a whole. The design opportunity under 2.1 is specifically for ideas for retention ponds at the household level. These could be above or below ground, but would certainly need to consider the undulating terrain. How could these ponds also align with design opportunity 2.3 for “affordable and durable household rainwater collection and storage systems”?
Cheers,
Anthony