Overview
- Satellite photos and local images published this week show former brañas around the Xallas headwaters converted to dense eucalyptus and pine stands with small tributaries such as the Bazar and Boaña running dry.
- MeteoGalicia and regional geologists report rainfall is arriving in intense, short bursts that produce runoff rather than soil infiltration while Galicia’s thin weathered granite layer, the xabre, limits how much water the ground can hold.
- Galician reservoirs are generally small—around 22 hectometres cubed in scale—and municipal networks leak roughly 18% of supplied water, which together reduce the amount of water that can be captured and reused after storms.
- Legal protection gaps persist because the 2012 forestry law’s riparian buffers apply only to channels two metres wide or larger, leaving many headwaters and brañas unprotected and vulnerable to plantation conversion.
- Policymakers, scientists and local groups are urging low‑impact fixes first, including targeted tree removal in brañas, better monitoring and repair of leaks, studies of groundwater potential and careful evaluation of any new reservoir plans to limit environmental harm.