You might wanna study permaculture and dig some swales and bunds to maximize water soaking into the soil to raise the water table, gotta harvest those monsoons, also catch as much rainwater off every roof as possible, install big tanks.
Mulching, lots of mulching.
Woodchips to insulate the soil, can be used to create footpaths to minimize soil compaction by walking all over the place, limit your walking zones.
Plant nitrogen fixing trees to help hold moisture, create shade (you can prune them into ideal coverage).
You want 100% of your soil surface covered with mulch, woodchips or vegetation.
