Rainwater Harvesting for Yurts

[someshds]

I am in the process of designing 2 yurts for myself, wife and 5 year old son to live in. One of my concerns is water. So I'm looking into ways of harvesting rainwater using the yurt. I've done a bit of research and watched a lot of video's but nobody is really doing it.

I'm thinking of making my

center ring

not circular but octagon shape, that way it will be easier to add a overhang over the walls then guttering on the overhang.

Any thoughts and advice would be appreciated.

Thanks