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1 janvier 2013
- handle: 10670/1.za1k5v
Mots-clés
urban water demand suburb area residentialSujets proches
Suburbia Outskirts of cities Suburban areas Africa, South Land Land utilization Utilization of land Use of landCiter ce document
Heinz Erasmus Jacobs et al., « Effect of land area on average annual suburban water demand », Water SA, ID : 10670/1.za1k5v
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Résumé
Current guidelines for estimating the average annual residential water demand (AADD) in South Africa are based on residential plot size. This paper presents a novel, robust method for estimating suburban water demand as a function of the suburb area. Seventy suburbs, identified as being predominantly residential, were selected for analysis from the largest urban metropolitan area in South Africa. A linear relationship was noted between the total suburb water demand and two land cover areas, namely, the total suburb area and total residential plot area. The average demand for the 70 suburbs based on suburb area was 6.6 kℓ.-d-1.ha-1, with 90% of the values in the range between 4.4 kℓ.d-1.ha-1 and 8.7 kℓ.d-1.ha-1. The average demand was 10.4 kℓ.d-1.ha-1 for calculation based on the residential area. The results are useful when crude estimates of AADD are required for planning new land developments.