Type of gate: disappearing oscillating buoyancy flap gate

Number of gates: 4 rows at three locations (Lido, 2 rows; Malamocco, 1 row; Chioggia, 1 row)

Number of individual gate sections: 79 (Lido, 41; Malamocco, 20; Chioggia, 18)

Individual gate dimensions: 66 feet wide, 15.5 feet thick, 99 feet long at deepest point

Weight of each gate: 250 - 350 tons

Height of tides when gates operate: 40 inches or more above average

Average lagoon inlet closure time: 4.5 hours

Time necessary to open the gates: 30 minutes

Time necessary to close the gates: 15 minutes

Maximum difference in level between sea and lagoon when gates are raised: 6.6 feet

Cost of the project: $1.9 billion

Project execution time: 8 years

Number of direct jobs during execution: 1,000 per year

Number of direct jobs when fully operational: 150 per year

Maintenance and management costs: $9.2 million per year ($6.2 million for maintenance, $3 million for management)