干旱区生态环境知识资源中心

Integrated analysis of field data indicates that the Thar desert had a longer network of drainage in the past. Saraswati had been one of the major rivers. Aerial photointerpretation has been useful in definite identification of Kantli palaeo-channels in areas adjacent to the Aravalli hills. Signatures of palaeo-channels on space imagery are sometimes misleading as similar reflections are recorded from dunal depressions also and, hence, must not be thought of as indicating groundwater potential zones.