It's about ten times as big as Yosemite National Park.
In other words, 31,000,000 dunams is 10.24160 times the size of Yosemite National Park, and the size of Yosemite National Park is 0.097641 times that amount.(Tuolumne, Mariposa, and Madera counties, California, near Mariposa, California) (total land area)
Famous for its granite cliffs and Giant Sequoia groves, Yosemite National Park is 3,026,870 dunams in total area, of which 208,000 dunams is the well-known Yosemite Valley. The Park is known as the home of Yosemite Falls — the highest waterfall in North America and sixth highest in the world at 739 m (2,420 ft)
It's about twelve times as big as Fort Irwin.
In other words, the size of Fort Irwin is 0.083 times 31,000,000 dunams.(San Bernardino County, California)
Fort Irwin measures 2,600,000 dunams in total area. It is known as part of the Installation Management Command and as the home of the Army's National Training Center.
It's about one-tenth as big as Montana.
In other words, 31,000,000 dunams is 0.081399425 times the size of Montana, and the size of Montana is 12.2850990 times that amount.(United States)
The "Treasure State," Montana measures 380,838,070 dunams in total area. The northwest corner of Montana is home to Flathead Lake, the largest freshwater lake in the continental United States with a surface area of 496,000 dunams.
It's about thirteen-and-a-half times as big as Jacksonville.
In other words, 31,000,000 dunams is 13.601380 times the size of Jacksonville, and the size of Jacksonville is 0.07352195 times that amount.(Florida)
The largest city in Florida and the fifth-largest city in the country, Jacksonville measures 2,279,181 dunams in total area. The city is known for its diversified industrial and manufacturing base and as a transportation hub, featuring a prominent deep-water port, a large airport, and extensive rail yards.
It's about one-fifteenth as big as California.
In other words, 31,000,000 dunams is 0.073118453 times the size of California, and the size of California is 13.6764380 times that amount.(United States)
The "Golden State," California measures 423,969,580 dunams in total area. California is home to both the highest point — Mt. Whitney at 4,421 m (14,505 ft) — and lowest point — Death Valley at 85.5 m (282 ft) below sea level — in the continental United States, the two of which are separated by just 123 km (76 mi).
It's about sixteen times as big as Anaconda.
In other words, 31,000,000 dunams is 16.1470 times the size of Anaconda, and the size of Anaconda is 0.061931 times that amount.(Anaconda City/Deer Lodge County) (Montana)
The consolidated city-county of Deer Lodge County (of which Anaconda is the county seat) measure 1,919,900 dunams in total area. The town of Anaconda is named after the Anaconda Mine owned by the town's founder, Marcus Daly, and was itself the namesake of the Anaconda Copper Company, one of the largest trusts of the twentieth century.
It's about sixteen-and-a-half times as big as Maui.
In other words, 31,000,000 dunams is 16.4590 times the size of Maui, and the size of Maui is 0.060757 times that amount.(Hawaii)
The second-largest of the Hawaiian Islands, Maui measures 1,883,500 dunams in total area. It is known as the home of the Maui High Performance Computing Center and as a major tourist destination.