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)
Lending the term "sydharb" or "sydarb" to comparable quantities of water, Sydney Harbor contains approximately 456,000 acre feet of water. Snapper Island, a onetime naval facility loocated in the Harbour, was transformed by the dredging efforts of the Australian Navy from a 2,360 sq. m (25,400 sq. ft) outcropping to a 16,500 sq. m (178,000 sq. ft) island shaped roughly in the outline of a boat.
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)
Halley's Comet, the famous comet visible to observers on Earth approximately every 76 years, has a peanut- or potato-shaped nucleus made of rock, dust, ice, and various frozen gasses. The nucleus measures approximately 15 km by 8 km by 8 km, which yields a calculated volume of 3,300,000,000 acre feet. The coma of the Comet — the trail of sublimated gasses that give the Comet its visibility — may be up to 100,000 km in length.
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)
A dynamic and continuously changing landscape, the Grand Canyon has an approximate volume of 3,380,000,000 acre feet. The strata of the rock visible in the Canyon's walls display nearly 2 billion years of geological history.
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)
The Great Pyramid of Giza has an estimated volume of 1,968.099 acre feet including its internal hillock. The 2,300,000 stones used in the construction of the pyramid weighed an average 2.27 metric tons (2.06 short tons) and were quarried at distances of up to 805 km (500 mi) away.
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)
The MCG has an internal volume of approximately 1,400 acre feet. The first cricket game held on the site of the MCG was in 1853 when the Melbourne Cricket Club was granted permission to a roughly 0.04 sq. km (10-acre) area to be used "for cricket and no other purpose."
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)
The Reliant Astrodome measures 970 acre feet in total volume. Until its renovation in 1988, Roy "The Judge" Hofheinz, the franchise owner of the Houston Colt .45s (later the Houston Astros) and one of the Astrodome's developers, had a private 966 sq. m (10,400 sq. ft) apartment in the facility.
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)
Royal Albert Hall measures 70.250 acre feet in total auditorium volume. One of the centerpieces of the Hall is the Grand Organ — the second-largest organ in the United Kingdom, with 10,268 speaking pipes reaching up to 9.8 m (32 ft) in height.
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)
Spaceship Earth, the iconic structure at the heart of Walt Disney World Resort's Epcot (formerly EPCOT Center), has a total volume of 50 acre feet. The outer structure of the sphere features a gutter system that channels all rainwater into nearby World Showcase Lagoon instead of simply falling off the surface of the sphere.
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)
The Capitol rotunda measures 30 acre feet in total volume. Beneath the Capitol lies a crypt that was built to hold the remains of President George Washington, but according to his wishes, Washington was entered at his family home and the crypt remains empty.
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.
The Lincoln Memorial Reflecting Pool holds approximately 20.70 acre feet of water. The Pool has a sloping bottom and extends to 80 cm (30 in) deep in its center.
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.
The Gulf of Mexico contains 1,973,000,000,000 acre feet of water. Every second, the Mississippi River empties 9.7290 acre feet of water into the Gulf.
It's about 850,000 times as big as The Goodyear Blimp
The size of The Goodyear Blimp is about 4.650 acre feet.
The Goodyear GZ-20 model Blimp measures 4.650 acre feet in total volume. A December, 1929 college football game between the University of Florida Gators and the University of Oregon Webfoots (later the University of Oregon Ducks) began with the blimp dropping a parachute-equipped ball from a height of 61 m (200 ft) to the field below.
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)
According to the Fédération Internationale de Natation (FINA), a swimming pool for Olympic and world championship events must measure 50 m by 25 m with a depth of at least 2 m for a total volume of 2 acre feet. A pool of this size was to be used in Olympic time trials in New Jersey in early 2008, but its component pieces were stolen from a warehouse, likely to be sold for scrap metal.
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)
The average volume of a hot air balloon sufficient to lift four adults is 1.80 acre feet. Typically made of nylon or dacron, a balloon envelope of this size typically weighs just 88 kg (190 lbs).
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)
Over 97% of the Earth's water is found in the planet's five oceans for a total volume of about 1,100,000,000,000,000.000000000000000000 acre feet. The Pacific Ocean is the largest ocean, covering 165,760,000 sq. km — more than double the area of the Atlantic Ocean at 82,400,000 sq. km.