Climate: desert marginal in height
Normal summer rains: 300 mm in a year
Frequency catastrophe: each 2 or 3 years
Duration catastrophe: 7 days approx.
Rains catastrophe: 300 mm in a week
On the Chilean and Bolivian altiplanic punas, over the 4000 meter above sea level, it is present a phenomenal called Bolivian winter, which consist on strong rain due to earth heating and air masses humid comming from the Amazon basin, that differentiates itself of the common front systems.
It occurs in the months between December and March, with different intensities on each year, where each certain period appears leaving serious consequences.
The strong rains, in a short period time, they cause the isolation and the impossibility of access to the place, and it affects small settlements distributed on the punas.
In this area the self- sufficiency is fundamental, due to the geographical location, in this sense; a very important problem is that the water of the natural sources is affected with this phenomenon, being contaminated with particular material.
The problem is not the excess, but the lack of water, due to the contamination of the natural sources.
This it due to that fall 330 mm in a week, wich equals, in this climate, to the quantity of water that would in all a year.
The refuge consists of a system of collection and accumulation of water, attached to the existing structure that permits besides to protect to the mud houses, of possible damages caused by the rains.
The idea is to collect the necessary water for the provision in the days after the catastrophe.