Northern Province

The Northern Province of Sri Lanka occupies the Jaffna Peninsula and the island chain to its north and west, with Palk Strait separating the peninsula from the Tamil Nadu coast of India at a minimum width of roughly 64 kilometres. Palk Bay, the shallow (average depth approximately 10 metres) body of water between the peninsula and India, significantly modifies the tidal signal relative to the open Bay of Bengal: the shallow water and restricted geometry produce a spring range at Jaffna of approximately 0.6 to 0.9 metres, with the tidal timing and character different from both the eastern and western Sri Lankan coasts. NARA (National Aquatic Resources Research and Development Agency) is the authoritative Sri Lanka tide source. Palk Strait is navigable by shallow-draft vessels throughout; the Adam's Bridge chain (also known as Rama's Bridge), the series of limestone shoals and small islands extending from Mannar in the northwest to Dhanushkodi in India, forms a natural near-barrier across the southern end of Palk Bay and significantly restricts water exchange with the Gulf of Mannar. The current over and around Adam's Bridge runs on tidal forcing combined with the weather-driven pressure gradient between the Bay of Bengal and the Gulf of Mannar. The Northern Province suffered heavily in the Sri Lankan civil conflict (1983 to 2009); reconstruction of infrastructure and the gradual return of tourism to the Jaffna and Delft Island areas has accelerated since 2009. The Tamil cultural landscape — kovils, casuarina-lined causeways, shallow-draft fishing boats, palmyra-palm-backed beaches — is distinct from the rest of Sri Lanka and draws Tamil diaspora visitors alongside growing international cultural tourism.