Paul Cereghino wrote:
Interesting... I bet in soil storage won't be enough because the rain comes to fast, and too infrequently, and your soils are not deep enough or water retentive enough to carry you through the dry season - you may need actual water storage, or very fast annuals to take advantage of the wet season (which might not be enough is some years).
The rock may be like a giant roof, and may concentrate runoff... this might be a place for a cistern - given you likely have the aggregate nearby, concrete might be the material of choice. There are some cool pictures in Mollison's manual--they look like ideas he picked up from arab settlements. natural storage in rock.
H Ludi Tyler wrote:
Hugelkultur pits. Chip out basins in the rock, fill with wood (rotten wood if you can find it), top with soil and plant whatever you want to grow. The pits will retain any rain or irrigation you put in them.