Abstract
Jatibarang reservoir serves as water supply in dry season and controlling flood in Semarang City. This reservoir is stem Kreo River which cathment areas of 54 km2, pool of area 110 ha and volume is 20 billion m3. This reservoir is potential to develop as natural fisheries area. The goals of this research were to explore existing condition of physical, biological as well as chemical parameter; carrying capacity assessment for natural fisheries; determining appropriate fish species to be developed in Jatibarang reservoir. This research was done in descriptive explorative scheme. Field survey and laboratory analyses were conducted to identify physical, chemical and biological parameters of the water. Physical parameters measured were temperature and water brightness. Chemical parameters measured were pH, DO, phosphate, Ammonia, nitrites and nitrate, while biological parameter measured were chlorophyll-a concentration. Carrying capacity analyses was done referred to the Government Regulation Number 82, 2001 that regulate the management of water quality and water pollution control. Based on the research, it showed that the existing condition of physical, chemical and biological parameters were still good to be used for natural fisheries. Based on TSI index, it classified as eutrofic water. Furthermore, tilapia fish (Oreochromis mossambicus), nile tilapia (Oreochromis niloticus) tawes (Barbonymus gonionotus) and carper fish (Cyprinus carpio) were considered as best species for natural fisheries in Jatibarang Reservoir.
Highlights
Jatibarang reservoir that is built in Kandri Village, Gunung Pati sub-district, Semarang city is strategic area of environmental support, with the major function as flood controller and can be develop as tourism
Jatibarang reservoir was located in coordinate 110°20'49.71"E and 7° 2'24.67"S
Based on administrative located in Kandri Village, Gunung Pati Sub district, Semarang City (Figure 2)
Summary
Jatibarang reservoir that is built in Kandri Village, Gunung Pati sub-district, Semarang city is strategic area of environmental support, with the major function as flood controller and can be develop as tourism. Reservoir of Jatibarang serves as water storage in the dry season and controlling flood during rainy season. This reservoir was stemming Kreo River which catchment areas is 54 km, broad puddle 189 ha and reservoir volume is 20,4 millionm3 [1]. The such condition has a chance to develop as natural fisheries
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