Water Resources Management in Uruguay - Potential Climate Change Impacts

Potential Climate Change Impacts

The Uruguayan Second Communication to the UNFCCC includes and assessment of the vulnerability of water resources to the likely impacts of Climate Change. The assessment, which is also part of the National Program for Mitigation and Adaptation to Climate Change (PMEGEMA for its acronym in Spanish), states that river basins with high water resources demand and limited hydraulic infrastructure will likely be the systems affected the most by Climate Change. These impacts will be worsened by the lack of an efficient, integrated water resources management system country wide. Also, according to the Second Communication climate scenarios show that “there will be likely an increased demand of water vis a vis supply, but this ratio is far from compromising Uruguay’s water resources, except form the Merin Laggon basin, where current water balance is already stressed.”

Floods magnitude and frequency is likely to increase due to intense precipitation and land use change, especially around urban areas. Groundwater recharge will also be affected by change on precipitation, although it is not expected to be substantially lower. However, MVOTMA expects an increase in groundwater use in the future due to an increased water demand for irrigation and industrial purposes. Higher demand could increase pressure in already stressed systems such as the Raigon Aquifer and Southern areas where there is a need for groundwater integrated management systems.