Increased urbanization has an impact on increased impervious surface, consequently the urban drainage system becomes gradually overloaded, with frequent spills and inundate urban areas. Upgrade or re-design the existing drainage system is not an effective solution because it does not address the source of the problem. It is necessary strategies for urbanization reduction of storm-water runoff. These strategies are aimed to reduce storm-water runoff mainly through water infiltration. One of the strategies is to develop permeable pavement. This study is aimed to test the capacity of permeable pavement through the development of full scale physical models in the parking lot. The results show that proposed permeable pavement are able to significantly reduce volume and peak discharge of storm-water runoff, delay the start of runoff and slow the peak discharge. The application of this proposed permeable pavement in the urban area is strongly recommended to reduce drainage load as well as to increase groundwater recharge.

Paddy farming is closely related to irrigation water supply since it is a kind of plant that has a high water requirement. Therefore, in major areas in Indonesia, paddy is not recommended to be grown in dry season. In Brebes Regency, many farmers still pick paddy for all three planting seasons that they suffer from insufficient of irrigation water supply. The objectives of this study is to find out how water availability compared with water requirement at Pemali Kanan Irrigation Area in both periods (present time and 20 years to come) and is intermittent irrigation technique required to solve this water supply problem. This research is conducted by calculating water availabilty using FJ Mock Method, generating water availability for the upcoming 2 decades using Thomas-Fiering Method and analysing water requirements for all 13 cropping patterns. Output of the analysis shows that water availability of Pemali River in both periods are statistically identical. Meanwhile, the average water requirements are mostly negative. It means that water requirements for all 13 cropping patterns could be fulfilled by rainfall. The conclusion is that in most 2-weekly periods, rainfall could provide adequate water supply for all areas. Intermittent irrigation technique will only be required in a certain period that is the 3rd planting season which lasts from Juni to October.

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