[4] It is located in the south-western corner of the Western Province and is contiguous with Wasur National Park of Indonesia.

It includes tidal river reaches, mangrove areas, swamps, grassland, savanna woodlands and patches of monsoon forest.

[6] Fifty mammals are known to occur in the area, including a number not found elsewhere in New Guinea, such as the spectacled hare-wallaby, false water-rat, bronze quoll and chestnut dunnart.

[3] In 1995 a Tri-National Wetlands Program was initiated by WWF between Tonda WMA, Wasur NP, and the Australian Kakadu National Park, which led to a Memorandum of Understanding between the three government conservation agencies in 2002.

Local people also harvest and sell a number of wildlife resources to merchants on the other side of the border, including deer meat and antlers, candlenut, the plastra of freshwater turtles, shark fins, saratoga (Scleropages jardinii) fingerlings and the dried swim bladders of certain fish.