Dam and spillways
Type of dam Gravity dam
Impounds Yangtze River
Height 181 m (594 ft)
Length 2,335 m (7,661 ft)
Width (crest) 40 m (131 ft)
Width (base) 115 m (377 ft)
Spillway capacity 116,000 m3/s (4,100,000 cu ft/s)
Reservoir
Creates Three Gorges Reservoir
Total capacity 39.3 km3 (31,900,000 acre⋅ft)
Catchment area 1,000,000 km2 (390,000 sq mi)
Surface area 1,084 km2 (419 sq mi)
Maximum length 600 km (370 mi)
Normal elevation 175 m (574 ft)
Hoover Dam is 726 feet (221 meters) high and 1,244 feet (379 metres) long at the crest. It impounds Lake Mead, which extends for 115 miles (185 km) upstream and is one of the largest artificial lakes in the world.
Its a huge dam that may have not been all that well thought out as you look over what there is on it.Lots of varying opinions.