Bandung is one of the areas prone to flood disasters in Indonesia. The frequently affected by flooding are located around Cikapundung Watershed. Floods triggered several factors, namely: rainfall, changes land use, as well geological and morphological conditions. aim this research analyze rainfall watershed see whether there an increase extreme from 1977- 2022. method used first test homogeneity over 45 years. Next, indices trend each wet were calculated using Mann-Kendall test. results show...

The Dieng Plateau in Central Java, Indonesia, is home to unique volcanic lakes with significant ecological and economic value. Effective environmental governance critical for the sustainable management of lakes, particularly regions prone natural hazards like Plateau. Several have been reported, including phreatic explosions. This paper explores a multidisciplinary approach governance, integrating sciences social sciences, ensure these lakes. We investigated necessity challenges establishing...

Abstract The watershed ecosystem is a complex system in which there are numerous transportation and transfer mechanisms of mass energy. To make management more effective all national critical watersheds, needs to be scientific, evidence-based policymaking that based on an understanding the socio-hydrological processes watershed. availability Decision Support System (DSS) technology can appropriate approach this need because DSS interface between scientific practical (easy-to-use,...

Cimanuk watershed is one of the national priority watersheds for rehabilitation considering its critical condition. In this area, Jatigede Reservoir operates, which second largest reservoir in Indonesia, after Jatiluhur Reservoir. The performs several functions, including flood control, irrigation 90.000 ha rice fields, water supply 3.500 litres per second, and power generation 110 MW. 2004 catchment area had a land 40.875 (28% area). sedimentation rate River at Eretan station shows high...

Abstract Lake Maninjau is caldera lake which lies at Sumatera island, Indonesia. The objective of this paper to analyse dissolved oxygen (DO) and water temperature (WT) stratification related mass mortality fish. WT DO were measured by logger version CTD profiler with a depth interval 1 m in March 2018. Based on analysis 12 stations measurement from buoyancy frequency value showed various stratification. top layer (epilimnion) had thickness 2 the concentration was 4.8 mg/l – 13.5 mg/l....

Abstract Flash floods are catastrophic phenomena known for their rapid and unpredictable occurrence. They frequently display precursory indicators, which, when comprehensively studied, serve as vital clues effectively anticipating preparing these events, thus reducing adverse effects. This study aimed to investigate the key trigger factors contributing a flash flood event in upper Ciliwung Watershed January 2021. Data collection involved various parameters, including morphology,...

Abstract One of the important components in flood disaster risk reduction is availability spatial information on that include: (1) hazard component such as discharge ( q ), depth h extent A and duration t (2) loss value due to which could be quantified form damage costs θ ). Change f (h, A, t, θ) was hypothesized sensitive climate change other environmental factors exist at a river basin area. Therefore, it quite control part adaptation programs impacts deal with increasing pressure...

Water temperature is one of the important parameters in aquatic systems, and it remains an interesting subject world-wide environmental research. The objective this study to identify hydrological, meteorological topological that influence water its change at pond Cibuntu based on data from April 2008 2009. In addition, analysis changes during rainfall events could lead identification mechanisms generates initial response as direct inputs rainwater. order gain insight fluctuations, results...

When measuring ecological variables in lakes, sampling frequency is critical capturing an environmental pattern. Discrete of traditional monitoring programs likely to result vital knowledge gaps understanding any processes particularly those with fine temporal scale characteristics. The development high measurements offer a sophisticated range information recording events lakes at finer time scale. We present physical indices tropical deep Lake Maninjau arrayed from OnLine Monitoring System...

Abstract The availability and quality of water resources are not only to support human health well-being, but also providing the functioning essential ecosystems, including rivers, wetlands, lakes coastal ecosystems. contamination aquatic ecosystem certainly carries a substantial loss, for environment beings who use goods services environment. Water related problems often cannot be managed overcome completely because sectoral approach, monodisciplinary unintegrated. Trans disciplinary...

Abstract Tropical lake is one of the unique ecosystems which are functioning in both ecological and economic services. Telaga Menjer as a volcanic lake, has strategic values hydropower plant, tourism, agriculture, capture fisheries floating net cages farming. It influenced degradation water quality quantity, nutrient enrichment exceed carrying capacity. catchment area around 2.27 km 2 with surface 0.61 .The purpose this research to investigate characteristic know carryng capacity utilization...

Abstract Pulai reservoir with an area of 49.9 ha and maximum depth 12 m, serves as clean water resources for Tanjung Pinang city, Bintan island. The objective this research was to evaluate the fluctuation level on reservoir, related climatological land use conditions. Water in January 2009 400 cm continued decrease 105 August that ceased supply. rainfall during ten months study period (January – October 2009) 1,968 mm, below its average 2,447 mm. dry spell reduced supply input about 2.5...

Abstract Jatigede Reservoir serves to control floods in Indramayu area. The reservoir irrigate rice fields by 90,000 ha, supply raw water for clean approximately 3,500 l/sec, and produce electricity 110 MW. Yet, the condition of Cimanuk watershed is reported a critical situation. It was characterized high soil erosion fluctuations river discharge. This study aims evaluate sedimentation flows that entering Reservoir. rainfall-runoff simulation determined SWAT (Soil Water Assessment Tools) on...

Abstract Mahakam cascade lakes consist of Lake Semayang, Melintang, and Jempang is a floodplain lake. include the 15 national priority which are most urgent situation. This lake characterized by dynamic water level fluctuation, resulting in high fishery productivity. The lake’s hydrological characteristic main component controlling ecosystem, therefore it crucial to evaluate influenced factors. objective this research describe characteristics, including inlet-outlet discharge, sedimentation,...