Territory Stories

East Alligator district centre water supply assessment : Kakadu National Park



East Alligator district centre water supply assessment : Kakadu National Park

Other title

D . Pidsley


Jamieson, M.; Pidsley, D.; Paiva, Jerome


E-Publications; E-Books; PublicationNT; Technical Report ; 26/1991




Made available via the Publications (Legal Deposit) Act 2004 (NT).






Water-supply -- Northern Territory -- Kakadu National Park; Groundwater -- Northern Territory -- Kakadu National Park; Kakadu National Park (N.T.)

Publisher name

Power and Water Authority

Place of publication



Technical Report ; 26/1991


1 v. : ill., maps ; 30 cm.

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Check within Publication or with content Publisher.

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Technical Report WRD91026 Viewed at 15:07:48 on 29/07/2010 Page 12 of 107. (vi) Logistical Problems The East Alligator District Centre is a remote location and is often isolated from road access due to flooding, for months at a time. Thus a reliable water supply system should be maintained. The pH correction unit installed requires frequent maintenance and is not reliable. It is recommended that components \,i thin the system be replaced by inert or highly corrosion resistant materials, thereby reducing the reliance on the pH correction unit and allowing its removal. (vii ) Use of Non-potable Waters 005MJ Use of non-potable water for ablution purposes is considered to be cost prohibitive at the current stage of development, due to the need for separate reticulation and storage of such waters. Brackish I-laters are, also much more corrosive than the present water supply and this adds to the cost of pumps, pipework, and maintenance of the system. The East Alligator River presents the most viable source of non potable water for ablutions purposes but this water may require treatment for turbidity before use. There are difficulties in siting a bore adjacent the river so an intake structure such as an infiltration trench at the rivers edge may be the most suitable means of collecting this river water. This method pre,sents logistical problems in construction, operation, and maintenance, which makes this a relatively expensive water supply option. It is recommended that this supply option be reassessed should there be a major growth in visitors to the area, above say, the 10% pa growth rate assessed in this report.