How big is 4,000,000 acre feet?
It's about nine times as big as Sydney Harbour
The size of Sydney Harbour is about 456,000 acre feet.
(formally Port Jackson, a.k.a. Sydney Harbor) (Sydney, New South Wales, Australia) (total estuary water volume at high tide)
It's about one-eight-hundred-fiftieth as big as an Halley's Comet
The size of an Halley's Comet is about 3,300,000,000 acre feet.
(Comet Halley, officially "1P/Halley") (volume calculated based on 2005 dimensions)
It's about one-eight-hundred-fiftieth as big as The Grand Canyon
The size of The Grand Canyon is about 3,380,000,000 acre feet.
(Coconino County and Mohave Counties, Arizona, near Fredonia and Grand Canyon, Arizona)
It's about 2,000 times as big as The Great Pyramid of Giza
The size of The Great Pyramid of Giza is about 1,968.099 acre feet.
(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt) (including internal hillock)
It's about 3,000 times as big as The Melbourne Cricket Ground
The size of The Melbourne Cricket Ground is about 1,400 acre feet.
(a.k.a. MCG, a.k.a. "The G") (Yarra Park, melbourne, Victoria, Australia) (internal volume)
It's about 4,000 times as big as The Houston Astrodome
The size of The Houston Astrodome is about 970 acre feet.
(a.k.a. Reliant Astrodome, a.k.a. Astrodome, a.k.a. Harris County Domed Stadium) (Houston, Texas)
It's about 55,000 times as big as Royal Albert Hall
The size of Royal Albert Hall is about 70.250 acre feet.
(a.k.a. Royal Albert Hall of Arts and Sciences) (Westminster, London, England, United Kingdom) (total auditorium volume)
It's about 80,000 times as big as Spaceship Earth (EPCOT Center)
The size of Spaceship Earth (EPCOT Center) is about 50 acre feet.
(a.k.a. EPCOT Center) (Walt Disney World Resort, Lake Buena Vista and Bay Lake, Florida) (total structure volume)
It's about 150,000 times as big as The US Capitol Rotunda
The size of The US Capitol Rotunda is about 30 acre feet.
(formally United States Capitol rotunda) (Washington, D. C.) (total chamber volume)
It's about 200,000 times as big as The Lincoln Memorial Reflecting Pool
The size of The Lincoln Memorial Reflecting Pool is about 20.80 acre feet.
It's about one-five-hundred-thousandth as big as The Gulf of Mexico
The size of The Gulf of Mexico is about 1,973,000,000,000 acre feet.
It's about 850,000 times as big as The Goodyear Blimp
The size of The Goodyear Blimp is about 4.650 acre feet.
It's about 2,000,000 times as big as an Olympic Swimming Pool
The size of an Olympic Swimming Pool is about 2 acre feet.
(FINA regulation; (minimum capacity)
It's about 2,000,000 times as big as a Hot Air Balloon
The size of a Hot Air Balloon is about 1.80 acre feet.
(four-person capacity; envelope volume; average)
It's about 0.000000004 times as big as Earth's Oceans
The size of Earth's Oceans is about 1,100,000,000,000,000.000000000000000000 acre feet.
(Total water volume of Atlantic, Pacific, Indian, Arctic, and Southern Oceans) (estimated)