Alqueva Olive Mega-Farms — Live Satellite Health Report

About this region

The Alqueva reservoir in Portugal’s Alentejo is the hub of a new kind of agriculture: super-intensive olive farming. Drip-irrigated hedgerows of Arbequina and Arbosana olives, planted at densities of 1,500+ trees per hectare, are machine-harvested for olive oil at industrial scale. This is a modern, high-input system — the opposite of Jaén’s traditional rain-fed groves — and the Alqueva irrigation project transformed this semi-arid region by guaranteeing water from Europe’s largest artificial lake.

Climate & growing cycle

Flowering falls in May and harvest runs from October to November. The region’s hot Mediterranean summers (regularly above 40 °C) would make olive growing impossible without the Alqueva reservoir. The drip-irrigation system is the linchpin of the entire operation, and its performance determines the crop outcome each year.

Satellite monitoring insights

Because the hedgerows are dense and irrigated, NDVI runs higher than traditional olive groves (0.4–0.6), with a clear seasonal cycle that peaks in late spring and holds through summer. EVI and SAVI are useful here because the rows are closed-canopy — standard NDVI saturates less easily at these densities. Drought stress is mostly an irrigation management issue: NDMI tracks whether the drip system is keeping up with the heat, and a falling NDMI in July or August is a direct readout of inadequate irrigation before yield is lost.

Key metrics

Index	Typical range	What it reveals
NDVI	0.4–0.6	Canopy density — higher than traditional groves
NDMI	−0.1 to 0.3	Irrigation performance — the critical management index
EVI	0.3–0.5	Performance in dense-canopy hedgerows

Free report: Get a live satellite health analysis of Alqueva’s olive mega-farms this month — see canopy vigour, irrigation status, and how the crop is tracking for free, no signup. Check the olives →