Algarve's Six Major Reservoirs Stand Between 78% and 98% Entering Peak Tourist Season — From the 2024 Drought Floor to a Decade-High Surplus

The Algarve enters peak tourism season with its six major reservoirs collectively printing a decade-high reading. Late-May data from the Agência Portuguesa do Ambiente (APA) place Bravura at 98%, Funcho at 97%, Odeleite at 95%, Beliche at 91%, Odelouca at 87% and Arade at 78% of total storage capacity. For the first time since the Sistema Nacional de Informação de Recursos Hídricos (SNIRH) began publishing the modern series, all six dams sit simultaneously above 78%.

The reversal from the 2023-2024 cycle is sharp. At the worst of the drought, Bravura held only 10% of capacity, prompting Águas do Algarve to deploy emergency cross-system transfers, ration agricultural withdrawals on the Mira and Funcho perimeters, and bring the region's first large-scale desalination plant at Albufeira into the regulatory pipeline. Tourists in the summer of 2024 saw hotel pools closed in Lagos and irrigation curfews for golf courses across Loulé and Vilamoura. The 2025-2026 hydrological year — a wet autumn followed by a record-breaking rainy winter — emptied the deficit, and Bravura began performing controlled discharges in late January for the first time in more than two decades.

What the numbers say about restrictions. The Comissão Permanente de Prevenção, Monitorização e Acompanhamento dos Efeitos da Seca rolled back the regional drought classification from "severo" through "normalidade" in three steps between October and February. Agricultural allocations on Mira-Sotavento were restored to 100% of the contract baseline for the 2026 campaign, and the Plano Regional de Eficiência Hídrica's compulsory rationing triggers will not activate this summer for any of the eight municipalities previously on alert.

The historical context matters because the surplus is partial. Aquifer recharge on the Mexilhoeira and Querença-Silves systems is still trailing pre-2022 baselines, and APA's medium-term outlook continues to flag the Algarve as a chronic structural-deficit basin. The 2026 abundance reflects a single wet year against a longer drying trend, not a reset.

Discharge geometry. Sul Informação reported in late January that Odelouca too is approaching the discharge threshold, and Águas do Algarve is sequencing controlled releases at Bravura, Odelouca and potentially Funcho to manage downstream flood lines on the Odelouca-Arade confluence. The release schedule is calibrated against the Plano de Emergência Interno for each dam and is being communicated through Proteção Civil channels to municipalities along the Ribeira de Odelouca corridor.

What This Means for Expats

• No summer rationing: Hotels, holiday rentals and resident households across the Sotavento and Barlavento should expect no mandatory water-use curbs through September.
• Pool refills permitted: Municipal byelaws that restricted initial swimming-pool fills in 2024 (most notably in Loulé, Albufeira, Lagos and Tavira) are not in force this year. Confirm with the Câmara before topping up.
• Tarifa social on water: Eligible low-income residents can still apply for the tarifa social da água through Águas do Algarve regardless of the surplus — the means-tested discount is not drought-conditional.
• Discharge alerts: Properties along the Ribeira de Odelouca, Ribeira de Bensafrim and the lower Arade should subscribe to Proteção Civil SMS alerts, as controlled-discharge windows can briefly raise downstream water lines.
• Golf and agricultural irrigation: Premium consumption charges that some municipalities introduced in 2023 remain on tariff schedules even though triggers will not fire this summer — they are dormant, not repealed.

For policymakers, the 2026 surplus is a window to accelerate the Plano Regional de Eficiência Hídrica investments — reuse, desalination, and network leakage repairs — rather than a reason to relax. The next drought will arrive on the same regional baseline as the last one.