Dube, TimothyMaswanganye, Sagwati Eugene2023-07-242024-11-062023-07-242024-11-062023https://hdl.handle.net/10566/17693Doctor ScientiaeThis study aimed to assess the use of multi-source remotely sensed data for monitoring the spatial distribution and dynamics of pools in two distinct sites (Touws and Molototsi) in South Africa. Various water extraction indices, including NDWI, Modified NDWI, and NDVI, were employed, along with a random forest classifier and Sentinel-1 SAR data, to map pools and their dynamics in both locations. The remote sensing methods effectively detected and mapped pools with satisfactory accuracy, except for small pools below 400 square meters. The study identified flow occurrences and rainfall as significant factors influencing changes in pool sizes. However, the interaction between pools and groundwater required further investigation and showed no conclusive evidence in this study.enDryland poolsDryland areasEphemeral streamsHydrologyPool dynamicsUniversity of the Western Cape