Daya Dukung Sumberdaya Air dan Indeks Kekritisan Air Sub DAS Cisokan Hulu

Abstract

Upper Cisokan sub-watershed is a natural ecosystem of water resource providers that can be used directly or indirectly by the community in it. The population rate and sectoral needs in the area are estimated have put pressure to the water balance. The value of the water carrying capacity and the water criticality are known from the water balance analysis. The availability of water resources (Wn) was determined based on the flow rate probability (Q80) of Weibull Method, the value of groundwater, springs and wells, and also the raw water supply of the local water company. Water demand (qpt) estimated based on the Statistic data, industrial data, agricultural area data, livestock production data, and fishery area data. The water carrying capacity (Cw) is generally still adequate (High), but at June to November, the water carrying capacity status shows a value of 1.84 (Critical) to 0.24 (Deficit). In general, the water criticality index is still safe (Not Critical), but in the dry period, especially in July, August and November, it shows a value of 125% to 421% (Very Critical). To anticipate the water crisis, stakeholders should allocate water efficiently according to its availability. So that the ecosystem is sustainably provide ecosystem services for providing water resources to the community.

Keywords

• ecosystem services
• upper cisokan sub watershed
• water balance
• water resources carrying capacity
• water criticality index