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Olympic Village, Saint-Denis

The Paris 2024 athletes' village rising on former industrial land.

86.0 hectares changed — water gone · Before: 1 Apr 2019 – 30 Jun 2019 · After: 1 Apr 2023 – 30 Jun 2023 · 48.928, 2.339

BEFORE 2019-06

AFTER 2023-06

Drag to compare

86.0 haarea changed

27areas flagged

906 haarea examined

2satellites used

What changed, by type

54.1 haWater disappeared

19.8 haVegetation cleared

9.4 haNew vegetation

2.7 haNew construction / earthworks

Land changes in both directions at once. SCOPE reports every type it measured, not only the one that makes the better headline.

What SCOPE found

Water disappeared — 54.1 ha
1.1 km south-west · between 16 May 2019 and 25 May 2023 · 86% sure

Vegetation cleared — 4.4 ha
1.1 km south-east · between 24 May 2019 and 25 May 2023 · 98% sure

Vegetation cleared — 3.0 ha
0.8 km south · between 16 May 2019 and 25 May 2023 · 98% sure

Vegetation cleared — 2.4 ha
1.2 km south-east · between 24 May 2019 and 25 May 2023 · 96% sure

New construction / earthworks — 2.0 ha
1.3 km east · between 24 May 2019 and 25 May 2023 · 96% sure

How sure is this?

The strongest area (#1) has 86% confidence. It appears in 6 of 6 later clear images, so it is not a one-day artefact. Radar confirmed some of these areas; the others rest on optical and seasonal evidence. Compared with the same season in earlier years, this is clearly unusual. Confidence measures how strong the evidence for real surface change is; it does not identify the cause or who did it.

How it was measured

SCOPE used Sentinel-2 optical imagery at 10 m, cloud-masked and combined over each period, Sentinel-1 radar as an independent check , and the same season in earlier years so normal seasonal change is not reported as real change. The analysis took 15 seconds.

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