Tags: Waterway Tunnel.
The Bosphorus Water Tunnel (Turkish: Boğaziçi Su Tüneli) is an under sea waterway tunnel in Istanbul Turkey crossing the Bosphorus strait. It was constructed in 2012 to transfer water from the Melen Creek in Düzce Province to the European side of Istanbul.The infrastructure built by the Ministry of Forest and Water Management is 136 m (446 ft) under the sea level resisting a pressure of 14 bar (200 psi).