East Alligator district centre water supply assessment : Kakadu National Park
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.)
Power and Water Authority
Technical Report ; 26/1991
1 v. : ill., maps ; 30 cm.
Check within Publication or with content Publisher.
Technical Report WRD91026 Viewed at 15:07:48 on 29/07/2010 Page 14 of 107. 2. EXISTING WATER SUPPLY SYSTEM 2. 1 Infrastrucr.ure A plan of the water supply infrastructure at East Alligator is shown on Diagram 1 and a schematic diagram of the system on Diagram 2. 2.1.1 Bores There are currently three bores equipped with pumps and able to deliver water to the reticulation system at East Alligator. The registered numbers of these bores are RN 20636, 23449 and 23450. Of these, only RN 23449 and 23450 are usually used. The "Catfish Dreaming Bore" (RN 20480) is equipped with a pump and connected by a rising main to storage tanks, but has not been tested for its ca,;:>acity to pump water to these tanks with the existing pump. Tbis pump ,vas set in the bore in October 1990. On 4 December 1990 the bore was run for 100 minutes with no water reaohing the tank in this time. Details of these bores and the pumps they are equipped wi t.h are given in Table 2.1. There is another bore, RN 20559 which was constructed in 1980 that may still be capable of producing water (although only 0.5 Lis could be recommended) that has been decommissioned, due to a reported sulphur smell present in the water. The source of this contamination should be identified prior to recommissioning this bore. 2.1.2 ReticulatiQ.U Most of the systems reticulation is 50 mm diameter Class 12 PVC, with some 65 mm FVC, 50 mm polyethylene, and 50 mm galvanised steel pipe (see Diagram 1 and 2). All pipework is buried except for the galvanisec' pipe which traverses a rock outcrop for some 91 m. At both ends of this outcrop it re-enters the ground to 50 mm PVC. 00511J