Problems and restoration of cascade Mahakam Lakes in the climate change perspective

Cascade Mahakam Lake (CML) have function as a flood retention area, a freshwater fishery center, and settlements. Problems in CML include damage to catchment areas, reduced biodiversity, fisheries productivity, and decreased water quality. Climate change is believed to have an impact on increasing pressure on the ecosystem and problems on the CML. This research aims to deals with the problems and needs of restoration from the perspective of climate change. Rainfall, water level, and water quality data were obtained from secondary data, while the problems of flooding, drought, declining fisheries productivity, and environmental health as a result of climate change are obtained from field observations and interviews with communities in CML. The results showed that annual rainfall in the CML area tended to increase, fluctuations in water level during floods and very high tide with uncertain cycles, conditions of flooding and drought were difficult to predict, and trend water quality declined. These conditions reduce the ability of the community in aquaculture and agriculture, flooding and drought adaptation, providing clean water and increasing weed. Restoration of CML areas ware urgently needed, include rehabilitation of catchment areas, increasing aquatic vegetation, reducing pollutant sources, maintaining biodiversity and increasing fisheries productivity. The implementation of Restoration CML faces obstacles such as had not yet been established management plans, lake boundaries, lack of information and monitoring of lake conditions, community empowerment, and disaster risk reduction activities.