The Todd River (Arrernte: Lhere Mparntwe) is an ephemeral river in the southern Northern Territory, central Australia. The origins of the Todd River are in the MacDonnell Ranges, where it flows past the Telegraph Station, almost through the centre of Alice Springs, through Heavitree Gap at the southern end of Alice Springs and continuing on for some distance, passing through the western part of the Simpson Desert, as it becomes a tributary of the Hale River, and eventually flowing into Lake Eyre in South Australia.