The locks artificially raise the surface level of the water in the canal to 406 m (1,332 ft) ... By comparison, the bottom of the deepest oceanic trench in the world, the Mariana Trench in the Pacific Ocean, is 14.7 km (9 mi) farther from the centre of the Earth. And 10 Other Things You Should Know Medically reviewed by Janet Brito, Ph.D., LCSW, CST — Written by Annamarya Scaccia — Updated on September 18, 2018 Rank Name of Canal Length Connection Country Locks; 1: Grand Canal: 1,776 Km: Beijing-Hebei-Shandong-Jiangsu-Zhejiang-Hagzhou: China: 24: 2: Qaraqum Canal… Some records define it as the world’s deepest gorge, with a depth of 5571 lower than Annapurna I at a point between … Photo by Gil Baillache via Flickr. Steam and new types of steel made wider and deeper ships possible. This is the Kola Superdeep Borehole, the deepest manmade hole on Earth and deepest artificial point on Earth. Its reservoir, Lake Havasu, is a … The Kali Gandaki Gorge in Nepal, one of the most wonderful gorges in the world, was formed by the Kali Gandaki, or Gandaki River in the Himalayas. The deepest, SG-3, reached 12,262 metres (40,230 ft; 7.619 mi) in 1989 and is the deepest artificial point on Earth. What you see is not what you get at Parker Dam, known as “the deepest dam in the world.” Engineers, digging for bedrock on which to build, had to excavate so far beneath the bed of the Colorado River that 73 percent of Parker Dam’s 320-foot structural height is not visible. Grand Canal in China is the longest canal in the world stretched 1776 km with 24 locks. Discovery Channel/Deep Planet The team dove to the bottom of the Mariana Trench five times, BBC News reports. Tuel Lane Lock, Rochdale Canal The 40,230ft-deep (12.2km) construction is so deep … The borehole is 23 centimetres (9 in) in diameter. When the canal labelled ‘the longest, the widest and the deepest in the world’ had been opened so that two seagoing ships could pass each other, a new type of ship suddenly came on the scene. How Deep Is a Vagina? The Eisenhower Road Tunnel in Colorado one of the world's highest, located 3,401 meters (11,158 feet) above sea level, at the highest point on the U.S. interstate highway system. Long Description: According to Guinness World Records: "The Corinth Canal, Greece, opened in 1893, is 6.33 km (3.93 miles) long, 8 m (26 ft) deep and 24.6 m (81 ft) wide at the surface and has an extreme depth of cutting of 79 m (259 ft).It is still in use today." The deepest lock in the world is Oskemen Lock, bypassing a hydro-electric dam on the River Ertis in Kazakhstan, with an incredible rise of 138 ft (42m). I take this as an inquiry into ‘’useable depth’’ by vessels and not specific ‘’holes’’ within an Harbour area. In terms of true vertical depth, it is the deepest borehole in the world.