How the flood watch works

Data sources

• Weather & rain — Open-Meteo.com forecast API, CC BY 4.0. Computer-model estimates, not station readings. Checked at 25 points across the regions.
• River flow — Open-Meteo Flood API (CC BY 4.0), based on the Global Flood Awareness System (GloFAS) of the Copernicus Emergency Management Service. Modeled on a ~5 km grid, not gauge readings.
• Region boundaries — geoBoundaries (GUY ADM1), from © OpenStreetMap contributors, ODbL 1.0. Simplified for this site.
• Base map — OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.
• Terrain shading (large screens) — Terrain Tiles on AWS Open Data, by Mapzen, from SRTM, GMTED, ETOPO1 and others.
• Satellite imagery — EOxCloudless 2025 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2025), CC BY-NC-SA 4.0. A cloud-free mosaic of 2025 photos — it shows what places look like, not today's conditions. Dimmed at night to match the real time of day.
• Live clouds — NASA GIBS, GOES-East ABI GeoColor (NOAA). A real satellite image of the clouds, updated every 10 minutes, about 40–60 minutes behind real time.
• 3D terrain & buildings — terrain from the Terrain Tiles above (heights exaggerated ×1.6 so hills are readable); buildings and roads from © OpenStreetMap contributors via OpenFreeMap.
• Waterfalls — locations of 88 waterfalls mapped in © OpenStreetMap contributors (ODbL).
• Animations — rivers flow in the direction OpenStreetMap records; rain appears only where the weather model says it is raining now, slanted by the modelled wind. Traffic and waterfall motion are illustrations, not live data — there is no free live traffic feed for Guyana. The sky, shadows and night-time dimming follow the real position of the sun.
• Software — MapLibre GL JS (BSD-3), Space Grotesk font (SIL OFL).