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Pressure tunnels are tunnels where the entire cross-section is filled with water thus creating hydrostatic pressure. Pressure tunnels can e.g. be used as headrace or tailrace tunnels for hydroelectric power generation.

Most Important Structures in this Category

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# Name Country length
1 Hálslón Headrace Tunnel Iceland 39700 m
2 Ufsarlón Headrace Tunnel Iceland 13300 m
3 Niagara Tunnel Canada 10200 m
4 Manapouri Power Station New Zealand 10000 m
5 El Alto Headrace Tunnel Panama 3372.8900 m


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