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 9 of 107. risk of groundwater contamination. Each bore operated singularly should sustain 110 kL/day. With both bores operating a sustainable yield of 120-130 kL/day should be achieved. Presently RN 23449 or 23450 are pumped individually at 2.2 L/s for up to 12-16 hours/day. This pump rate should be reduced to 1.2 Lis (see section 4.8.1). Each bore should be operated on alternate days and provision made for both bores to operate simul taneol.lsly during peak use periods. For this to work sufficient storage is required to cater for peak daily use and this requires the full utilisation of the 60 kL storage near Merl 1. Automation of Bores and Boosters The electric submersible pumps in the bores should be automated so as to maintain maximum storage and minimise drawdowns in the bores. This requires the bor'es to switch on whenever storage drops below a certain level and turn off when storage is full. They currently automatically turn off in this way. This requires electric cabling from the storage tanks to the bores, and could be installed when the power supply main generator to the borefield is installed. pumps at the pump house currently automatically, and this is the recommended from the Booster opl~rate mode of operation. The booster pump near the 60 kL tank will not be nec'3ssary if this storage is moved. The total cost to implement these recommended immediate works is around $167,000. (i v) Upgrades Required to meet a 10% na Growth in Water Demand The following recommendations should be reviewed in 1 years time following a full year's metering of water use at the district centre. 005HJ
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