Key Points
- Chandragupta Maurya initiated Sudarshana Lake in the 4th-3rd centuries BCE.
- Rudradaman I (c. 150 CE) rebuilt the lake after a storm, using his own funds.
- Skandagupta oversaw final recorded repairs to the lake around 455 CE.
The Junagarh Rock Inscription: It is located near Girnar Hill in Gujarat, is one of India’s most vital epigraphic records. It primarily details the achievements of the Shaka Kshatrapa ruler Rudradaman I, but more importantly, it chronicles 800 years of engineering history of Sudarshan Lake. This article delves into the rulers involved, the technical brilliance of ancient Indian irrigation, and the cultural significance of the inscription.
The Junagarh Rock Inscription is a unique "historical ledger" carved on a massive granite boulder. Written in elegant Sanskrit, it serves as a testament to the administrative foresight of ancient Indian rulers and their commitment to public welfare through the maintenance of the Sudarshan Lake.
Junagarh Rock Inscription: The Mauryan Contribution
The lake was a state-sponsored irrigation project initiated during the 4th and 3rd centuries BCE by Chandragupta Maurya. Its development occurred in two phases:
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Chandragupta Maurya: The lake was originally conceived and constructed under the orders of the empire's founder. His provincial governor in the Saurashtra region, Pushyagupta Vaishyadammed local rivers (the Suvarnasikta and Palashini) to create this massive artificial reservoir know as Sudarshan Lake.
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Ashoka: Emperor Ashoka expanded the Canal by recognizing the lake's potential for wider agricultural benefit and further developed the site.
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The governor Tushaspha, a Yavana (Greek) official, added a sophisticated network of irrigation canals and conduits to distribute the stored water to surrounding farmlands.
Source: egyankosh
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The Ruler: Rudradaman I
The rock contains inscriptions from Ashoka and Skandagupta but the most famous portion belongs to Rudradaman I (130–150 CE), the greatest king of the Western Kshatrapas.
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Junagarh Rock inscription is considered the first lengthy record written in Chaste Sanskrit, marking a shift from the Prakrit used in earlier eras.
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Rudradaman highlights that he repaired the lake using his own personal treasury without burdening the citizens with forced labor (Vishti) or extra taxes.
Source: NIOS
The History of Sudarshana Lake:
The inscription provides a chronological "biography" of the Sudarshan Lake, showing how different dynasties maintained this vital water resource.
| Dynasty | Ruler | Contribution |
| Mauryan Empire | Chandragupta Maurya | Original construction of the dam by his provincial governor 'Pushyagupta'. |
| Mauryan Empire | Ashoka | Irrigation canals were added by his governor, Tushaspha. |
| Western Kshatrapas | Rudradaman I | Rebuilt the dam "three times stronger" after a massive storm destroyed it in 150 CE. |
| Gupta Empire | Skandagupta | Final recorded repairs in 455 CE by his governor Parnadatta and his son Chakrapalita. |
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