Client/Employer: ACF
During the 2017/2018 Sahelian drought, surface water in pastoral zones was acutely scarce, worsening conditions for livestock herds who depended on lakes and ponds for water.
Using 1km imagery from Proba-V, an “Accessibility” anomaly was calculated (visible in the lower-right corner of the infographic). This showed the presence of surface water for the current year, compared with the average area of surface water for the same zone between the 1998-2017 period. Areas shaded in blue were in excess of the average and red areas in deficit. The darkest red areas were completely absent of surface water.
This was then complemented with Sentinel 2 imagery taken from Sentinel Hub’s EO Browser to show the difference between 2016 and 2017.