As of 2026-10-12, Mamut Mine tops the list with 500 m.
- #1 Mamut Mine — 500 m
copper mine
Mamut Mine is an abandoned open-pit quarry mine located in the Ranau District of Sabah, Malaysia, where from 1975 to 1999, various minerals, primarily copper, including some gold and silver, were mined. The mine is known as Malaysia's only copper mine. It came to public attention due to the major environmental harm it caused. Read more on Wikipedia.
Wikidata - #2 Sihwa lake — 467 m
lake made by the Sihwa tidal barrage
source Wikidata - #3 Rutland Water — 235 m
reservoir in Rutland, England
Rutland Water is a reservoir, an artificial lake, in Rutland, England, east of Rutland's county town, Oakham. It is filled by pumping from the River Nene and River Welland, and provides water to the East Midlands. By surface area it is the largest artificial reservoir in the United Kingdom, but its capacity is exceeded by that of Kielder Water in Northumberland. Its maximum depth is 33 m (108 ft). Read more on Wikipedia.
Wikidata - #4 Lake Nigat — 140 m
reservoir in Ethiopia
Nigat Lake is an artificial reservoir in Ethiopia, created by the impoundment of the Blue Nile River by the Grand Ethiopian Renaissance Dam (GERD). At full capacity, it is one of the largest reservoirs in Africa and among the largest worldwide, with a storage volume exceeding 70 billion cubic metres—greater than Lake Volta in Ghana, comparable to Lake Nasser on the Egypt–Sudan border, and ranking alongside global megaprojects such as Lake Kariba and China’s Three Gorges Reservoir. The... Read more on Wikipedia.
Wikidata - #5 Portsmouth Mine Pit Lake — 137 m
artificial lake in Minnesota, US
Portsmouth Mine Pit Lake, sometimes called the Portsmouth Pit, is the deepest lake completely within the state of Minnesota, USA. It has a depth of over 450 feet (137 m), according to the most recent Minnesota DNR data. Lake Superior, over 700 feet deep off the north shore of the state, is technically deeper. The 120-acre (49 ha) artificial lake is a former iron mining pit in the Cuyuna Range that has since filled with water. Read more on Wikipedia.
Wikidata - #6 lago del Mis — 88 m
lake in Italy
source Wikidata - #7 Lago del Salto — 87 m
artificial lake in Italy
Lago del Salto is a reservoir lake in the Province of Rieti, Lazio, Italy. At an elevation of 535 m, its surface area is 10 km². Read more on Wikipedia.
Wikidata - #8 Most Lake — 75 m
artificial lake in the Czech Republic
Most Lake is an artificial lake in Most in the Ústí nad Labem Region of the Czech Republic. The lake came to be as a result of land rehabilitation of an area formerly used as a lignite mine, and was named after the mine. The lake spans 309 ha, which makes it the second largest lake in the country. It has a length of 3 km (1.9 mi) and a width of 1.5 km (0.9 mi). The water level is 199 m (653 ft) above sea level and maximum depth of the lake is 71 m (233 ft). The lake is open to the... Read more on Wikipedia.
Wikidata - #9 Lac de Villefort — 70 m
reservoir in France
Lac de Villefort is a lake in Lozère, France. At an elevation of 580 m, its surface area is 1.27 km². Read more on Wikipedia.
Wikidata - #10 Lago del Corlo — 68 m
lake in Italy
source Wikidata