RT null T1 Rainwater Utilization for the World's People - Proceedings Volume 2 A1 United Nations Environment Programme, K1 rainwater K1 agriculture K1 water management K1 irrigation K1 water resource YR 1995 FD 1995-06 LK https://wedocs.unep.org/handle/20.500.11822/29937 UL https://wedocs.unep.org/handle/20.500.11822/29937 NO This paper deals with the semi-and region of Brazil. About 12 % of Brazil's surface is semi-arid land. It is mostly covered with tree and shrub vegetation, called "Caatinga", and located in the Northeast of the country, an area of nearly one million square kilometers and a population of 17 million. DS UN Environment Document Repository RD Sep 22, 2026