 This study evaluated the accuracy of the moderate resolution imaging spectroradiometer, MODIS, evapotranspiration, ET, product against eddy covariance, EC, measurements in two ecosystems in South Africa. The MODIS-ET product was found to be inconsistent with EC measurements in both sites, indicating that further research is needed to improve the accuracy of the MODIS-ET product for use in South Africa's integrated water management. This article was authored by Abel Ramilo, Nobule Majosi, Renault Matthew, and others.