Todd River

Todd River

Infobox River
river_name = Todd River



image_size =
caption = The dry riverbed of the Todd River
origin = MacDonnell Ranges
mouth =
basin_countries = Australia
length =
elevation =
mouth_elevation =
discharge =
watershed = 445 km2

The Todd River is an ephemeral river in the southern Northern Territory, central Australia. The origins of the Todd River begin in the MacDonnell Ranges, where it flows past the Telegraph Station, almost through the center 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. [Todd River - A Rare Occurrence. [http://www.ausemade.com.au/nt/destination/a/alice-springs/as-images/todd-river/astr-image-index.htm] ]

The indigenous Arrernte people know this river as Lhere Mparntwe (pronounced ler-ra m-barn-twa).

The Todd is in a very arid part of Australia and has zero to very low flow during 95% of the year. When it does flow, it carries a heavy sediment load picked up from the grazing land around the Bond Springs homestead which lends its waters a milky chocolate colour and renders them completely opaque.

Significance to Alice Springs

The Todd River is integral to the city of Alice Springs, with its CBD built on the edge of the river. A large portion of the Alice Springs municipal area is situated on a flood plain of the Todd River, created by flooding upstream of the east-west barrier created by the Heavitree Range, a local segment of the MacDonnell Ranges.. Heavy flows of the Todd can cut road and rail access, and the bottle neck effect of the Gap can cause flooding in many parts of the town.

Heavy rainfalls in the catchment to the north of Alice Springs cause the river to start flowing through the town around 6 to 8 hours later. The river can change from its normal dry bed to a bank-to-bank flow within a matter of 15 minutes, and it is possible to follow the leading edge of the flow as it snakes through town at a walking pace.

The riverbed contains sites and trees sacred to the local Arrente people.

Recreation and Social Events

The Henley-on-Todd Regatta has been held in Alice Springs annually since 1961. [cite web |url=http://www.henleyontodd.com.au/content/view/2/3/ |title=http://www.henleyontodd.com.au/content/view/2/3/ |accessdate=2008-07-23 |format= |work= ] The ironic regatta is held on the dry riverbed, and draws up to 20,000 spectators. Bottomless boats are picked up by the competitors standing within them and running down the course. The regatta carries insurance against the risk of water in the riverbed. The Henley-on-Todd Regatta has once been cancelled, in 1993, due to flooding - the river had too much water for the race.

Other events are held in the dry riverbed, including the closing ceremony for the 2006 Alice Festival. Camping in the riverbed is illegal, although this law is rarely enforced.

A flow of water in the river is quite an event] for the people of Alice Springs, who flock to the causeways and the Telegraph Station to play in the fleeting waters. Although the riverbed is wide and of gentle gradient through the town the opaque waters combined with trees, waterborne and man-made hazards make playing in the flowing river dangerous.

Upstream from Alice Springs the Todd River descends quite rapidly, dropping 100 metres from Junction Waterhole to the Telegraph Station over 8km of River length (5km direct). This is a hilly area, and the river bed is strewn with rocks creating some lively rapids during the short-lived flood events. Many locals are wary of these waters, remembering the death of a local man in 1997 who drowned whilst riding the river on a lilo. Local paddlers have recently taken to kayaking this excellent section of grade 2 to 3 rapids.

ee also

*List of rivers of Australia

Footnotes

References

*Australian Bureau of Meteorology. [http://www.bom.gov.au/hydro/wr/unesco/friend/todd/todd.shtml Todd River] - course, map and data
*Centralian Advocate (Newspaper of Alice Springs).
*Alice Springs News. [http://www.alicespringsnews.com.au]
*Wilkins, P. W. 2002. [http://www.wilmap.com.au/atts/93.html Henley on Todd Regatta - Alice Springs Todd River]
*Photos, contacts, dates [http://www.henleyontodd.com.au/ Henley on Todd Website] - Next regatta Sat 30 Aug 2008
*Ausemade, Todd River Photos, 2006-2007 [http://www.ausemade.com.au/nt/destination/a/alice-springs/as-images/todd-river/astr-image-index.htm] - Todd River - a rare occurrence

External links

* [http://www.ausemade.com.au/nt/destination/a/alice-springs/as-images/todd-river/astr-image-index.htm Todd River Images]


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