Implementation challenges of water and land-use plans: a case study on the Guarani aquifer system in Sao Paulo, Brazil

Barbosa, M. C. and Albuquerque, J. L. and Ikematsu, P. and Carvalho, A. M. and Alam, K. and Cavani, A. C. M. and Mushtaq, S. (2012) Implementation challenges of water and land-use plans: a case study on the Guarani aquifer system in Sao Paulo, Brazil. In: 2nd Practical Responses to Climate Change National Conference: Water and Climate: Policy Implementation Challenges (PRCC 2012), 1-3 May 2012, Canberra, Austalia.


The Guarani Aquifer System (GAS) is considered to be a strategic fresh water reserve in Latin America, occurring in regions of Brazil, Uruguay, Argentina and Paraguay. The east and west zones of the GAS are unconfined and, consequently, more vulnerable to contamination. A lack of adequate planning and management is leading to problems of contamination and intensive exploitation of water. This paper presents findings of a comprehensive study conducted in the unconfined zone of the GAS in the Sao Paulo State (Brazil), which resulted in the Development and Environmental Protection Plan for the GAS (DEPP-GAS) and the Protection and Recovering Area for the GAS (PRA-GAS), both management instruments of the state Act 9866/97. This paper aims to highlight key implementation challenges of the DEPP-GAS and provide recommendations to overcome them. The study utilized the GOD method (groundwater occurrence; overall characteristics of the aquifer; and depth of water) and POSH method (pollutant origin; and surcharge hydraulically) for mapping the groundwater vulnerability to contamination and the potential sources of groundwater contamination. The overlap of these maps generated the hazard of groundwater contamination. The study proposed the first protection and recovering area created for an aquifer. Preliminary findings of this investigation indicate challenges for implementing the proposed DEPP-GAS, since the area has 26,110 km2, several towns and agro-industrial centres, and covers the territory of 105 municipalities and 7 Water Resources Management Units (WRMU). The main challenge of this plan will be articulating the actions which take place at the regional level with local actions. This study also remarks that for an effective protection of the aquifer, other portions of the GAS in Brazil and in other countries should be focus of future researches.

Statistics for USQ ePrint 22059
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Business and Law - No Department
Date Deposited: 25 Jan 2013 01:30
Last Modified: 26 Jun 2017 00:14
Uncontrolled Keywords: water management; groundwater management; hydrology; Latin America; water pollution
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
15 Commerce, Management, Tourism and Services > 1503 Business and Management > 150303 Corporate Governance and Stakeholder Engagement
09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
Socio-Economic Objective: D Environment > 96 Environment > 9603 Climate and Climate Change > 960301 Climate Change Adaptation Measures
D Environment > 96 Environment > 9609 Land and Water Management > 960912 Urban and Industrial Water Management

Actions (login required)

View Item Archive Repository Staff Only