Nattai
An aerial photograph of the Nattai River to form Lake Burragorang, in 2012.
Location of the Nattai River mouth in New South Wales
Location
Country	Australia
State	New South Wales
Region	Sydney Basin (IBRA), Southern Highlands
LGA	Wollondilly
Physical characteristics
Source	Mittagong Range, Great Dividing Range
• location	south of Mittagong
• coordinates	34°24′48″S 150°26′22″E / 34.41333°S 150.43944°E / -34.41333; 150.43944
• elevation	452 m (1,483 ft)
Mouth	confluence with the Wollondilly River to form Lake Burragorang
• location	Nattai
• coordinates	34°5′2″S 150°25′21″E / 34.08389°S 150.42250°E / -34.08389; 150.42250
• elevation	116 m (381 ft)
Length	51 km (32 mi)
Basin features
River system	Hawkesbury-Nepean catchment
Tributaries
• left	Wanganderry Creek, Allum River
• right	Rocky Waterholes Creek, Martins Creek (Wollondilly), Little River, Gillans Creek
National park	Nattai National Park
[1][2]

The Nattai River, a perennial river^[1] that is part of the Hawkesbury-Nepean catchment, is located in the Southern Highlands region of New South Wales, Australia.

Course and features

The Nattai River rises on the Mittagong Range within the Great Dividing Range, south of Mittagong, and flows generally north northwest and then north northeast, joined by nine tributaries including the Little River, before reaching its confluence with the Wollondilly River within Lake Burragorang southwest of the locality of Nattai. The river descends 336 metres (1,102 ft) over its 51-kilometre (32 mi) course.^[2]

The river flows through the Nattai National Park and is a source of water for the Sydney region.