Overview
- The Confederación Hidrográfica del Miño‑Sil declared a prealert (nivel amarillo) on Monday for nearly the entire basin except the Sil Superior after monitoring showed circulating river flows about 45% below normal for July.
- Rain was heavily concentrated in November–February, but precipitation from March to July was about 49% below the period average, leaving several months unusually dry despite the hydrological year ending 9.9% above its long‑term average.
- Reservoirs in the Galicia Costa group are at their lowest occupancy in 15 years, a shortfall that is already affecting water management for 31 concellos in the demarcation.
- Under the prealert the CHMS steps up surveillance and recommends that local ayuntamientos limit non‑essential uses such as street washing, garden and sports‑field irrigation, and public fountains, with some municipalities like Entrimo already notifying residents.
- CHMS sent a letter to all municipalities in early July asking for conservation measures and says it will ratify formal instructions in the coming days as officials warn continued dry weather could force locally imposed supply restrictions.