The river most mentioned in early Vedic literature is

1. Early Vedic literature, particularly the Rigveda, provides geographical information about the land inhabited by the Vedic Aryans. 2. Several rivers are mentioned, playing a significant role in their lives and hymns. 3. Among the rivers mentioned (Sindhu - Indus, Sutudri - Sutlej, Sarasvati, Ganga - Ganges), the Sindhu (Indus) river is mentioned most frequently in the Rigveda. 4. The Sarasvati river was highly revered and considered sacred, but the Sindhu has the highest number of mentions, indicating its geographical and economic importance.