The area designated for the future island is located in the Banat section of the municipality of Palilula between the Danube and the Jojkićev Dunavac canal, ending section of the Vizelj stream in Pančevački Rit (Jojkić's Little Danube, named so after the former mayor of Belgrade, Đurica Jojkić) on the east, and the weekend settlement of Crvenka on the west.
The area is floodable, thickly forested, uninhabited (that is, without permanent population) and densely crisscrossed by the elongated bogs and slow streams.
The projected area of the island is 5.82 km2 (2.25 sq mi), which is twice as large as Ada Ciganlija and three times larger than Veliko Ratno Ostrvo.
Though some articles already nicknamed it the twin island of Veliko Ratno Ostrvo (which is 800 m (2,600 ft) away), Čaplja is going to be almost three times larger in area, differently shaped, it will not have any land of bridge connection to each other, and unlike Veliko Ratno Ostrvo which is protected by the law and any human interference is prohibited, future island is projected as the major tourist and recreational attraction.
Across the embankment, a 100 ha (250 acres) large golf terrains are projected, so as a marina which will connect the island to the ports in Belgrade (600 m (2,000 ft) away) and Zemun.