Engineering Wonder: The Mighty Reservoir of the Zuari Basin
Located in Sanguem taluka approximately five kilometers from Sanguem town and 32 kilometers southeast of Margao, the Salaulim Dam (also spelled Selaulim) is the largest and most critical water resource project in Goa. Built across the Salaulim River—a major tributary of the Zuari River—the dam creates a massive artificial reservoir covering over 24 square kilometers of pristine foothill valley.
The dam is an earth-cum-masonry structure with a total length of 1,004 meters and a height of 42.7 meters above its deepest foundation. Commissioned in the 1980s, the reservoir provides the lifeline drinking water supply to the entire district of South Goa, including the cities of Margao, Vasco da Gama, and Mormugao, while irrigating over 14,000 hectares of agricultural land.
The defining marvel of the project is its unique duckbill spillway: a 100-meter-long curved concrete lip shaped like a duck's beak that requires no mechanical gates. When floodwaters rise above capacity, water spills automatically and smoothly into the vortex, creating an awe-inspiring hydraulic spectacle.
The Unique Duckbill Semi-Circular Spillway
Unlike conventional dams with vertical sluice gates, Salaulim Dam features an extraordinary engineering design: a semi-circular, curved 'duckbill' spillway. During the monsoon when the reservoir reaches full capacity, water cascades gracefully over the curved rim into a deep circular funnel, creating a hypnotic whirlpool vortex of foaming white water that plunges into the river gorge below.
Botanical Splendor: The Terraced Gardens of Salaulim
Directly below the earthen embankment of the dam lies an expansive, 14-hectare terraced botanical park inspired by the celebrated Brindavan Gardens of Mysore. The park is a masterwork of landscape architecture, featuring cascading stone fountains, meandering water channels, and manicured lawns bordered by ornamental hedges.
The gardens are landscaped with thousands of exotic tropical flowering plants, royal palms, bougainvillea canopies, and fragrant frangipani trees. Wide paved walking promenades wind through the terraces, offering shaded resting pavilions and scenic stone viewpoints overlooking the bubbling river channel.
The surrounding forested hills are a haven for wildlife. Visitors strolling through the gardens routinely spot colorful forest birds, including kingfishers, green bee-eaters, golden orioles, and diverse jungle butterflies that thrive in the lush microclimate created by the dam's spray.
Lost Heritage: The Annual Re-Emergence of Curdi Village
The creation of the Salaulim reservoir involved an immense human and cultural sacrifice: the complete submersion of the historic agrarian village of Curdi (Kurdi), which had flourished for over a thousand years along the banks of the river. Over 3,000 residents were relocated to rehabilitation colonies at Valkinim and Vaddem.
Every year in the dry month of May, as reservoir water levels drop to their annual low before the monsoon, a miraculous and poignant phenomenon occurs: the lost village of Curdi re-emerges from the waters. For approximately three to four weeks, the submerged ruins of ancestral homes, stone roads, tree stumps, and village wells become visible.
During this brief window, displaced villagers and their descendants gather from across Goa in an emotional pilgrimage, holding interfaith prayers at the ruins of the village temple and chapel to celebrate their shared heritage and ancestral memory before the monsoon rains submerge the valley once again.
Restricted Security Zones & Water Current Precautions
Salaulim Dam is a vital critical infrastructure facility supplying drinking water to South Goa; photography is restricted on certain technical installations, and crossing protective railings is strictly prohibited. Swimming or wading in the deep reservoir or spillway plunge pool is banned and dangerous.
Archaeological Triumph: The Relocation of Someshwar Temple
One of the greatest archaeological achievements associated with the Salaulim project was the successful salvage and relocation of the ancient Someshwar Temple. Dating back to the 10th-11th century Kadamba period, this ancient laterite Shiva temple stood directly in the flood zone of the reservoir.
In a pioneering conservation effort directed by the Archaeological Survey of India (ASI), the entire stone temple was meticulously dismantled block by block, with every individual stone numbered and cataloged. The structure was then systematically transported and reconstructed with exact precision atop a hillock roughly 1.5 kilometers away, safely above the reservoir high-water mark.
Today, visitors can visit the reconstructed Someshwar Temple near the dam entrance, marveling at its medieval Kadamba carvings and the extraordinary engineering feat that saved it from watery oblivion.
Transit Log, Operating Protocols and Travel Guidelines
Salaulim Dam is located 5 kilometers from Sanguem town, 32 kilometers southeast of Margao (Madgaon) city, and 50 kilometers from Dabolim International Airport. Panaji is 60 kilometers to the northwest. The drive from Margao takes about 45 minutes via the four-lane highway through Tilamol and Curchorem.
The dam complex and botanical gardens are open to visitors daily from 9:00 AM to 6:00 PM (nominal entry fee at the gate). Ample paved parking is available near the entrance. A security viewing deck atop the dam embankment provides panoramic views of the reservoir and the spillway vortex.
The premier time to witness the duckbill spillway in full roaring operation is during the peak monsoon and post-monsoon months from July to October. Conversely, May is the only time to witness the re-emergence of submerged Curdi. A visit to Salaulim takes approximately two hours, ideally combined with exploring the historic Sanvordem railway junction or the pristine waterfalls of Netravali.
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