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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 23 of 107. 2 . 3 . 3 Capacity of Bores and Water Source The capacity of bores to produce water is dependant on the pump and rising main connected to the bore, as well as the properties of the aquifer and water source, and the bore itself. Based on the pumps down hoI,. and the rising main to the tanks the pumping capacity for each bore is shown in Table 2.4. Also shown is the estimated capacity of the water source to supply water to each bore, RN 20636 and RN 23449 have been constructed within the same fracture and so should not be used together. This is evidenced from pump tests performed after construction of RN 23449. (See Appendix 4 concerning this). RN 23449 and RN 23450 have been constructed within separate fractures but are within the same fracture :system. This allows limited use of both bores together during peak demand periods. TABLE 2.4: CAPACI'rY OF BORES AT EAST ALLIGATOR DISTRICT RN PU~lP SETTING PUNPING CAPACITY 20480 Mono 320 '30 m 0.6 Lis 20636 Mono 320 19 m 0.6 Lis 23449 Grundfos 22 m 2.2 Ljs SP8-1S 23450 Grundfos 22 m 2.2 Lis SP8-1S 2.4 WATER Ql.lALITX 2 .4. 1 Water Sampling History ESTlNATED BORE CAPACITY Not known 110 kLjday *110 kLjday *110 kLjday * by combining the use of these bores a safe yield of 130 kL/day could be achieved. There exists a history of water quality data from the bores and from distribution points within the supply system. Water samples were taken from most bores when they were drilled, pump tested, and at intervals during the times they have bE~en in use. Some samples have been analysed for the common chemical 005MJ