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It is important for the reconstruction of the geography of the Vedic civilization. Sarasvati Sindhu (the Indus) is addressed as the mightiest of rivers and addressed specifically in verses 1, 2, 7, 8 and 9.
O Ganga, Yamuna, Sarasvati, Shutudri (Sutlej), Parushni (Iravati, Ravi), follow my praise! O Asikni (Chenab) Marudvridha, Vitasta (Jhelum), with the Arjikiya (Haro) and Sushoma (Sohan), listen! Translation: Griffith
Verse 6 adds northwestern rivers (tributaries of the Indus flowing through Afghanistan and north-western Pakistan),
"First thou goest united with the Trishtama on this journey, with the Susartu, the Rasa, and the Sveti, O Sindhu with the Kubha (Kophen, Cabul river) to the Gomoti (Gomal), with the Mehatnu to the Krumu ( Kurum) with whom thou proceedest together." Translated by Max Mueller.
Griffith translates: "First united with the Trishtama in order to flow, with the Susartu and Rasa, and with this Svetya (you flow), O Sindhu (Indus) with the Kubha (Kabul R.) to the Gomati (Gomal), with the Mehatnu to the Krumu (Kurram), with whom you rush together on the same chariot."
According to Max Mueller on 10.75.5 in the book India: What Can It Teach Us? : "Satadru (Sutlej)". "Parushni (Iravati, Ravi)". "Asikni, which means black". "It is the modern Chinab". " Marudvridha, a general name for river. According to Roth the combined course of the Akesines and Hydaspes". Vitasta, the last of the rivers of the Punjab, changed in Greek into Hydaspes"."It is the modern Behat or Jilam". "According to Yaska the Arjikiya is the Vipas". "Its modern name is Bias or Bejah". "According to Yaska the Sushoma is the Indus".