saving water in a natural swimming pool.

Hello
I am looking for ideas to build a natural swimming pool in an aride climate where it never rains more than 250mm a year, i know it is not much and it wont be sustainable but we really need a swimming pond for our visitors in the hot months, otherwise the guest house will never get any visitors.
I heard planting plenty of trees to shade the water and limit evaporation can help? they will also protect the water from the wind and save more water, any other ideas?
Thank you

Trees also transpire water into the air, so careful species selection would be important.

Beyond that, site selection and perhaps sheltering earthworks to block wind... It's already going to be unnatural as it would be dry without intervention, so maybe consider putting it inside a pavilion of some sort to limit evaporation as much as possible.

Is there a source of "Grey" water that you can treat to supplement your rainfall?

Tony Paul Martin wrote:Is there a source of "Grey" water that you can treat to supplement your rainfall?

Using grey water for a swimming pool? it can't be safe unless i filter it many many time which add to the hassle, i rather use al the grey water for the food garden, washing etc...

Dillon: Could you please telle me what to look for when looking for trees that dont transpire much into the air?

Funnily we will be doing this with rain water brought from the roof. I'm going to berm 3/4 of the way around it, have a very deep area and plant trees around. The only area not bermed and not treed is the area facing the house, where the wind does not come from. I'm planning willow, cottonwood, aspen and bamboo for close to the water and fruit trees further out from it. Should work well, I hope. P.S. Our evaporation rate is higher than our rainfall as well.

elle sagenev: Willow trees have an extensive root system that can undermine foundations or underground lines/pipes, are you sure it is not going to be a problem for the pool structure, liner, pump...

I am thinking to plant shallow roots trees about 3meters away from the pool, it wont provide much shade but it will break the wind for sure.

The problem with too much shade is that if the sun doesn't reach the water at all, the water stays cool and the swimming season will be short.

steve perry wrote:elle sagenev: Willow trees have an extensive root system that can undermine foundations or underground lines/pipes, are you sure it is not going to be a problem for the pool structure, liner, pump...

I am thinking to plant shallow roots trees about 3meters away from the pool, it wont provide much shade but it will break the wind for sure.

The problem with too much shade is that if the sun doesn't reach the water at all, the water stays cool and the swimming season will be short.

It's not a pool, it's a natural swimming pool. Perhaps we have different meanings for that word. The natural ones I've seen are more like ponds than pools. Mine will be a pond set up for swimming.