Water Environmental Carrying Capacity in Urban Agglomeration of Yogyakarta City
Proceedings of the lst International Cohference on Geography and Education (ICGE 2016)
In the last decade, the urban agglomeration of Yogyakarta City (UAYC) where the area is bounded by the outer ring road of Yogyakarta, has undergone changes in land use significantly especially in the built-land reaching 85.36% of its total area in 2015. This study was aimed to analyze water environmental carrying capacity in UAYC and to evaluate the method mentioned in The Regulation of Environment Minister Republic Indonesia (REMRI) No.17/2009. This method was used to calculate the amount of S
... ate the amount of S A and D A in the study area by survey (primary and secondary data) and studio analysis. The results showed that the S A was 93,570,587 m 3 /yr and the D A was 1,113,329,600 m 3 /yr, so that the WECC value was 0.1. These mean that the value of D A is much larger than S A (S A < D A ), which means that the ability of WECC to fulfill the needs of water for a decent life has been exceeded or deficit for the year 2015. The evaluation of method used by REMRI No.17/2009 was conducted by comparing the calculations and results of REMRI No.17/2009 to those of the mix method commonly used in Indonesia. The mix method resulted the value of WECC 3.1 which means that the water carrying capacity was save. From the evaluation, it can be summed up that the REMRI No.17/2009 was relevant to be used as a long-term approach of the sustainable spatial planning even though there are some parameters need to be discussed in advance. On the other hand, the mix method was also possible to be used as a medium-term approach to make strategy of water management and the result gained by this method was closer to the reality than those by the previous one.