The present study is the result of qualitative and quantitative research on the impact and pressure factors present in building sustainable management of the Paraná River sub-basin shared in a section between Posadas (Argentina) and Encarnación (Paraguay).
The analysis is based on data concerning water resources management, the Posadas Strategic Plan, Argentina, the Mboi Caé Plan and Quiteria Watersheds Management for Encarnación and other districts in Paraguay, together with data provided by the Yacyretá Binational Entity, which manages a hydroelectric dam in this watershed. It has also used semi-structured interviews with members of the municipalityl, water supply and sanitation authorities, NGOs, the Yacyretá Binational Entity and relocated residents.
Long-term factors are crucial for sustainable management in order to preserve water resources. Population growth is the most important driver of change in territorial occupation. Therefore, to observe the outline of water governance actions, we have considered future growth prospects as estimated by both the localities up to the 2020s decade, offsetting them against current local plans for water management.
The Posadas Strategic Plan launched in 2008 is designed to bring sustainable development to the city by the year 2022. Urban watershed management appears as a sub-project of environmental management, and the water theme is spread out across countless projects. The estimated population in 2010 is 318.861 inhabitants, a 7.18% increase over 2008, and Posadas, the capital city of the province, may reflect the projection to 2025, when the population of Argentina is estimated at 46 million, with an expected 94% concentration in urban areas. This is the estimate made at the national level, where the vision for water resources is derived from two alternative development scenarios by virtue of the decisions taken over time.
In the region of the watersheds in Paraguay the estimated population increase is about 40.7% by 2015, as against a 2008 population of close to 80,000. At the national level the Public Policy Proposal for Social Development 2010-2020 considers water in various national objectives of the strategic axis Quality of Life, setting numerical and percentage indicators for assessing progress; and at the local level, the Management Plan for watersheds, whose themes include a wide range of cases, spans an implementation period of five years, 2008-2013.
On the basis of those findings, the points raised relate to:
1/ The state of the art of Integrated Water Resources Management in both cities,
2/ An analysis of the available information on those watersheds,
3/ An analysis of the factors that cause pressure and impact on the area,
4/ An analysis of the relationship between them and future management plans and
5/ Organization of those data by means of a systemic approach.
14 December 2010