Niger Delta Contamination Risk Dataset v1.0.0

Processed contamination risk dataset for the Niger Delta, Nigeria. Fuses heavy metal measurements from nine peer-reviewed studies, UNEP Ogoniland TPH data (2011), 15,630 NOSDRA oil spill incidents (2006-2026), and Sentinel-2 NDVI indices for 500 spill events into a Composite Risk Score at 1km² resolution across Rivers, Bayelsa, Delta, Edo, Akwa Ibom, and Cross River States. Files include risk grid, hotspots, sample points, spill incidents, and model metadata.