International Rainwater Catchment Systems Conference
Mannheim, Germany - September 2001
Legal and Political Aspects of Rainwater Harvesting
Why to Promote Rainwater Catchment Systems in the Brazilian Semiarid Tropics?
Actual situation of rainwater catchment in the Brazilian semiarid tropics
The 9th International Rainwater Catchment Systems Conference held in
Brazil in 1999 gave a fresh impetus to grassroots and governmental organizations
to tackle water demand and supply issues more seriously. Today, as a visible
result there are cistern building programs underway in many parts of the
Brazilian Semiarid Tropics (BSATs). Some 20,000 new cisterns have been
built in the past two years.
These initiatives converged in a big project called "One Million
Cisterns for Northeastern Brazil", carried out by non-governmental
organizations and mostly financed by the government. The outcome of the
program, however, is still uncertain since it depends on many factors,
especially the prevailing political situation. Therefore consciousness
raising among the people, organizations, technicians and politicians is
still necessary. This paper explains why to use rainwater catchment systems
in the BSATs. These reasons are important for the political discussion
in Brazil and they might be useful for other semiarid regions of the world.
The need for rainwater catchment systems in the BSATs
Learning from experiences in China, where studies using the GIS - Geographic
Information Systems- method to identify potential rainwater catchment
areas (Mou, 1999) were used, I will present maps of ranks of rainwater
catchment demand for the BSATs, based on the two factors, rainfall and
hydro-geology, and a combination of both.
PDF of full document (5pp, 29kb)
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