Cataract River (Wollondilly) should not be confused with Cataract River (Tenterfield).
| Cataract | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Australia |
| Subdivision Type2: | State |
| Subdivision Name2: | New South Wales |
| Subdivision Type3: | Region |
| Subdivision Name3: | Sydney Basin (IBRA), Macarthur |
| Subdivision Type5: | LGA |
| Subdivision Name5: | Wollondilly |
| Length Km: | 23 |
| Source1: | Illawarra escarpment |
| Source1 Location: | west of Mount Pleasant |
| Source1 Elevation: | 293m (961feet) |
| Mouth: | confluence with the Nepean River |
| Mouth Location: | Douglas Park |
| Mouth Elevation: | 78m (256feet) |
| River System: | Hawkesbury-Nepean catchment |
| Custom Label: | Reservoir |
| Custom Data: | Lake Cataract |
| Extra: | [1] |
The Cataract River, a perennial river that is part of the Hawkesbury-Nepean catchment, is located in the Macarthur region of New South Wales, Australia.
The Cataract River rises on the western slopes of the Illawarra escarpment, west of Mount Pleasant, and flows generally north northwest, impounded within Lake Cataract, before reaching its confluence with the Nepean River at Douglas Park. The river descends over its 23km (14miles) course.[1]
The river is a source of water for the Sydney region. Water is collected by the dams, weirs and aqueducts of the Upper Nepean Scheme.