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Batchelor water supply development study 1985.



Batchelor water supply development study 1985.


Keith Lane & Associated Pty Ltd


E-Publications; E-Books; PublicationNT; Report ; 68/1985




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





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Dept. of Mines and Energy

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Report ; 68/1985

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Technical Report WRD85068 Viewed at 15:07:30 on 29/07/2010 Page 26 of 58. I I I I I I I I I I I I I I I I I I I I 10.0 EVALUATION OF STORAGE 10.1 Storage Requirements: The Department's storage capacity requirement is the . annual peak day demand. It is desirable to provide an additional 25 percent for balancing storage. To determine this value for Batchelor, bore production and reservoir levels were studied for the 1984 dry season, using the measured values on the bore production charts and the reservoir level recorder. 10.2 Year 2000 Storage Requirements: If then, for the year 2000, the consumption rates of 2384 L/c.d and 2207 L/c.d are adopted for 960 residents and 900 transients, and the present consumption levels of existing community facilities are used (doubling for the peak day), the total predicted storage required is 4.8 ML. 10.3 New Reservoir options: There are two basic solutions available to the Town's lack of available head/storage problem. These are : (i) To provide an additional ground level tank (elevated tanks of the required capacity need not be considered because of their extremely high cost in comparison with ground level tanks) at the existing tank site with a booster pump station to cope with peak demand flows. The booster pump station would be controlled by pressure sensors at low pressure locations in the reticulation (typically located at the corner of Arwilla and Tarkarri Roads and the corner of Pinaroo Crescent and Mardango 11ay). Pressure sensors would be a more effective means of control than a standpipe arrangement located downstream of the pump station, although more expensive. (ii) Development of a new tank site at a location high enough to provide the required head in the Town, under gravity feed, whilst retaining the existing tank. In both cases, a new tank of equivalent capacity ~s required. 10.3.1 Size: To provide popUlation storage is adequate storage for the Town's predicted in the year 2000, a further 3.7 ML of required in addition to the existing 1.1 ML. The rise This site 10.3.2 Location: proposed new site for the 3.7 ML reservoir is on a to the Town's northwest, as indicated in Figure 4. location provides a number of advantages over the occupied by the existing reservoir, which was 22