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This study analyzes the urgency of strengthening citizen lawsuit mechanisms in response to spatial planning failures from an environmental law perspective, using the 2025 floods in Bali as a case study. The study is motivated by the increasing frequency and intensity of floods, which can no longer be understood as merely natural phenomena, but rather as the result of structural failures in spatial planning management and weak government accountability. Normatively, spatial planning is regulated under Undang Undang Nomor 26 Tahun 2007 dan Undang Undang Nomor 32 Tahun 2009 however, its implementation reveals a gap between legal norms and actual practice. The methodology employed is a normative legal approach, involving an analysis of legislation, legal doctrine, and judicial practices related to citizen lawsuits. The study's findings show that land-use conversion and development in water catchment areas, which go against the precautionary principle, the polluter pays principle, and sustainable development, are examples of spatial planning violations that cause flooding in Bali. In this situation, citizen lawsuits increase public access to justice while acting as a legal tool to hold the state responsible for its carelessness. However, this mechanism's effectiveness is still limited by the absence of a clear legal foundation, the difficulty of the burden of proof, and the public's limited access to the litigation process. Therefore, in order for citizen lawsuits to serve as effective tools for environmental protection and accountability, it is imperative that clear regulations be established, procedures be streamlined, and public access and ability information be improved.

The objectives of the study are: 1) To analyze the level of vulnerability of agricultural land to flash floods in Nagari Pauh Kamang Mudiak, 2) To analyze the condition of agricultural land in Nagari Pauh Kamang Mudiak before and after the flash flood. The results of this study: 1) Analysis of the level of vulnerability of agricultural land to flash floods in Nagari Pauh Kamang Mudiak, namely in the safe class covering an area of 8.34 hectares, the non-vulnerable class covering an area of 12.01 hectares, the vulnerable class covering an area of 51.91 hectares and the very vulnerable class covering an area of 18.13 hectares. This shows that most of the research areas have a high level of vulnerability to flash floods. Furthermore, the analysis of flash flood risks with 4 risk classifications is an area with a low risk of 16.94 hectares, a moderate area of 30.60 hectares, a high area of 37.78 hectares, and a very high area of 5.07 hectares. Based on the results of this analysis, the agricultural land most affected by the flash flood in Nagari Pauh Kamang Mudiak is rice fields covering an area of 72.2 hectares, 2) Analysis of the condition of agricultural land vegetation in Nagari Pauh Kamang Mudiak before and after the flash flood, namely with 5 classes, namely the very low greenness class covering an area of 12.69 hectares, low covering an area of 29.69 hectares, medium covering an area of 13.22 hectares, and high covering an area of 34.84 hectares. The results of the accuracy test using overall accuracy reached a suitability of 89.58% and the kappa coefficient reached a suitability of 84.32%, meaning good accuracysuitability between the classification results and actual conditions in the field.

Floods are one of the most frequent hydrometeorological disasters in Indonesia and cause various social, economic, and environmental impacts on communities. In disaster situations, women often face greater vulnerability than men due to limited access to resources, high domestic responsibilities, and minimal protection in disaster policies. Although the government has adopted a gender mainstreaming policy in development, its implementation in disaster management policies remains suboptimal. This study aims to analyze how flood management policies integrate gender perspectives and identify the impacts of floods on women. The study used a qualitative approach using literature study methods and media content analysis to understand the dynamics of policies and women's experiences in disaster situations. The results show that disaster management policies still tend to focus on technical and infrastructure aspects, while women's specific needs are often overlooked, particularly regarding security in refugee camps, access to reproductive health services, and increased domestic burdens during crises. This condition indicates that the integration of a gender perspective in disaster policies still faces various structural and institutional barriers. Therefore, efforts are needed to strengthen the implementation of gender-responsive policies so that disaster management does not only focus on physical mitigation, but is also able to provide fairer and more inclusive protection for all community groups.

The flash flood disaster that hit Indonesia, including the devastating disaster in three Sumatran provinces in November-December 2025 which resulted in more than 900 casualties and trillions of rupiah in losses, shows a strong correlation between environmental damage caused by corporate activities and increased disaster risk. The purpose of this study is to analyze corporate criminal liability for environmental damage resulting in flash flood disasters based on the Environmental Management Law (UU PPLH), examine the mechanism for proving corporate criminal liability, and evaluate the application of criminal sanctions against corporations that commit environmental damage resulting in flash flood disasters. The research method used is normative legal research with a descriptive analytical statute approach. Data collection techniques are carried out through library research and interviews with sources at the North Sumatra Provincial Environmental Service. The data obtained were analyzed qualitatively. The results of the study indicate that: First, corporate criminal liability for environmental damage resulting in flash floods has been comprehensively regulated in Articles 116 to 120 of the Environmental Management and Management Law, which recognizes corporations as subjects of criminal law and regulates the criteria for corporate crimes (committed by, for, or on behalf of a business entity), the responsible party (the business entity and/or the person giving the order/leader of the activity), a one-third aggravation of the sentence, and corporate representation in court, as reinforced by Supreme Court Regulation Number 13 of 2016. The conclusion of this study is that the Environmental Management and Management Law has provided a comprehensive legal framework for corporate criminal liability for environmental damage resulting in flash floods. However, the effectiveness of law enforcement still needs to be improved through accelerating the judicial process, strengthening the capacity of law enforcement, improving inter-agency coordination, and strengthening the decision execution mechanism.

Semarang City is an urban area with a high vulnerability to flooding. Based on data from the Semarang City Regional Disaster Management Agency, in 2022 there were 133 flood events with extreme rainfall reaching 200 mm per day. Kota Lama Semarang is a historical tourist destination with high heritage value, but this area often faces flooding challenges, especially around the Tawang Polder Area with inundation reaching 30-100 cm. This condition is triggered by an existing drainage system that is not optimal due to limited channel capacity and blockages caused by sedimentation. The purpose of this study is to develop the SEMAR-SUDs smart drainage system innovation. The writing method was carried out through literature studies, hydrometeorological data reviews, and descriptive-quantitative analyses, which formed the basis for the design and implementation of the innovation. SEMAR-SUDs (Semarang-Sustainable Urban Drainage Systems) concept is an integrative solution that combines three main elements Debris Separate Baffle Boxes (DSBB) as a technology for separating waste and sediment, ArborFlow technology based on ecodrainage that optimizes rainwater retention and distribution and Self Closing Flood Barriers that work automatically to protect critical areas. The implementation of SEMAR-SUDs can be a solution model in increasing flood disaster resilience in the city of Semarang while supporting the realization of SDGs 9 (sustainable infrastructure development), SDGs 11 (resilient and sustainable cities), and SDGs 13 (climate action). The SEMAR-SUDs innovation is highly suitable for implementation in Semarang City to mitigate flooding and realize a smart, adaptive, and sustainable drainage system infrastructure.

This study aims to analyze the strategic management of disaster services in handling flood-affected communities in Surabaya City. This study uses a qualitative descriptive approach with an analytical framework of strategic management theory according to Wheelen and Hunger (2008), which includes four main stages: environmental observation, strategy formulation, strategy implementation, and evaluation and control. Data were obtained through documentation studies, field observations, and secondary data searches from official reports from the Regional Disaster Management Agency (BPBD), the Central Statistics Agency (BPS), and relevant online sources. The results show that the BPBD of East Java Province has implemented a systematic strategic management cycle in disaster services. During the environmental observation stage, the BPBD was able to identify the main threat in the form of the dominance of hydrometeorological disasters, particularly floods. During the strategy formulation stage, the BPBD established a mission, objectives, and strategic policies focused on disaster risk reduction, increasing community preparedness, and strengthening cross-sectoral coordination. Strategy implementation is realized through mitigation, preparedness, and emergency response programs, as well as the utilization of early warning systems and command centers. Meanwhile, evaluation and control are carried out continuously through monitoring disaster events and adjusting policies based on actual conditions in the field. The flood-affected community management strategy demonstrates a responsive and collaborative approach, despite still facing structural challenges such as tidal flooding and limited drainage infrastructure. This study concludes that implementing strategic management based on the theory of Wheelen and Hunger (2008) can improve the effectiveness of disaster services, but requires strengthening long-term mitigation and community empowerment.

Flooding is one of the natural disasters that frequently occurs in Singkawang City and has a significant impact on infrastructure, economic activities, and the social life of the community. High rainfall, relatively flat topography, suboptimal drainage systems, and changes in land coverare the main factors causing an increased risk of flooding in this region. 

This study examines community capacity building for flood mitigation in flood-prone regions of Central Kalimantan through disaster education, technical training, and the construction of an amphibious house prototype. Using a community-based disaster risk reduction (CBDRR) framework, the program integrates participatory training, field surveys, and adaptive structural innovation. Findings indicate a 40% increase in community knowledge based on  Community Empowerment Level Analysis results, active engagement of 35 participants in disaster education, and significant improvement in technical skills among 22 trainees involved in amphibious foundation construction. The prototype achieved 100% completion within four effective working days, demonstrating the feasibility of amphibious technology using locally available materials. Strengthening youth organization structures further enhances community readiness and institutional resilience. Overall, the integration of participatory learning and adaptive technology effectively builds community self-efficacy and disaster preparedness in flood-prone environments.

This article explores legal accountability for flood disasters occurring in several regions of Sumatra, which are widely alleged to result from large-scale logging activities. The analysis is conducted within the framework of the Indonesian legal system, with particular emphasis on contract law. This study adopts a literature-based research method by examining statutory provisions, legal doctrines, and relevant scholarly publications. The analysis demonstrates that flood events should not be understood solely as natural occurrences, but rather as ecological consequences arising from the failure to fulfill contractual obligations embedded in forest utilization permits. From a contract law perspective, forestry concessions establish binding legal relationships that impose environmental protection duties on permit holders in accordance with the principle of pacta sunt servanda. Logging activities that exceed authorized limits may therefore be classified as contractual default (wanprestasi) and, at the same time, constitute unlawful acts that cause harm to the state and affected communities. Accordingly, this study underscores the necessity of strengthening environmental protection clauses within concession agreements and applying strict liability principles to enhance legal responsibility and prevent recurring environmental harm.

Flooding is one of the most recurrent natural disasters in Central Java Province, particularly during the rainy season. Diverse geographical characteristics, high rainfall intensity, and rapid urban development contribute to the region’s high vulnerability to flood hazards. According to the Central Java Statistics Agency, a total of 414 flood events and 407,784 affected victims were recorded between 2019 and 2021. This study aims to develop a web-based Geographic Information System (GIS) capable of mapping the spatial distribution and impact levels of floods across Central Java. The methodology includes collecting flood event data from the Central Java Statistics Agency, processing spatial data such as administrative boundary shapefiles, performing attribute integration between spatial and non-spatial datasets, and creating thematic maps using QGIS. The visualization outputs were exported into an interactive web format using the qgis2web plugin and subsequently integrated into a website developed with HTML, CSS, and JavaScript. The results show that the GIS system successfully visualizes flood-prone areas, identifies regions with high flood intensity, and enables users to explore detailed information through interactive digital maps. Additional website features—such as historical flood data, statistical summaries, and descriptive impact indicators—enhance the system's usefulness for disaster analysis. This study demonstrates the crucial role of GIS in supporting disaster mitigation, spatial planning, and policy evaluation related to flood management. Future research is recommended to incorporate more recent datasets and additional non-spatial variables such as rainfall intensity and floodwater depth to improve the system’s analytical accuracy and comprehensiveness.

This study aims to analyze the impact of government expenditure development and government budgeting on the social assistance recipients affected by floods. The research approach uses a quantitative method with a total of 50 respondents selected through sampling techniques. Data processing was conducted using SPSS software with various statistical tests, including validity test, reliability test, multiple linear regression, t-test, and F-test. The results show that the development of government expenditure has a significant impact on the condition of the social assistance recipients. Additionally, government budgeting also has a significant impact on the effectiveness of social assistance distribution after the disaster. Simultaneously, both variables have a strong influence on the social assistance recipients, as reflected by the significant F-test value and the coefficient of determination (R Square) of 0.518. This means that 51.8% of the variation in the condition of social assistance recipients can be explained by the development of government expenditure and government budgeting. These findings highlight the importance of appropriate expenditure and budgeting policies to enhance the effectiveness of social assistance distribution, especially in disaster situations.

This study is motivated by the high frequency and significant impacts of flooding in Indonesia, particularly the recurrent flooding of the Kali Lamong River in Gresik Regency, which causes substantial socio-economic losses each year. Although disaster management is normatively regulated by national policies, its effectiveness depends largely on collaborative governance among multiple actors. This study aims to analyze the practice of collaborative governance in flood mitigation in Gresik Regency using the model of Weber, Lovrich, and Gaffney (2005), which includes vertical, horizontal, and partnership dimensions, and to identify the key challenges that hinder its implementation. A descriptive qualitative approach was employed in flood-affected areas along the Kali Lamong River, involving BPBD, DPUTR, sub-district governments, village authorities, and local communities through interviews, observations, and document analysis. The findings reveal that collaboration has been established and functions relatively well, particularly in hierarchical coordination, division of roles among government agencies, strengthening of Destana, KENCANA, and SPAB programs, as well as CSR involvement and community participation all contributing to reduced flood duration. However, the implementation of collaborative governance remains constrained by slow land acquisition and infrastructure development, a predominantly reactive orientation, suboptimal early-warning systems between upstream and downstream areas, and uneven support from the private sector and academia. The study concludes that strengthening collaborative mechanisms and accelerating the resolution of structural barriers are essential to achieve more sustainable flood mitigation efforts in Gresik.

This study aims to analyze the level of flood hazard in Baturaja Barat District, Ogan Komering Ulu Regency, by applying a spatial approach using Geographic Information Systems (GIS) through the overlay method. The analysis was carried out by integrating six main physical parameters, namely rainfall, land use, elevation, slope, river density, and soil type. Each parameter was assigned a score and weight according to its influence on flood potential and subsequently processed spatially to produce a flood hazard map. The results indicate that the Baturaja Barat District area is classified into three hazard levels: low (3.25%), moderate (70.64%), and high (25.84%). Areas with high hazard levels are predominantly characterized by densely populated settlements situated at low elevations and in close proximity to river networks, particularly in Tanjung Karang, Air Gading, Talang Jawa, Karang Agung, and surrounding villages. These findings highlight that land-use changes, topographic conditions, and the distribution of river networks play significant roles in increasing flood risk. The results of this study are expected to serve as a foundation for spatial planning, the strengthening of disaster mitigation policies, and the enhancement of community preparedness against flood hazards in the region.

The flash floods and landslides that occurred in Central Aceh and Bener Meriah Regencies demonstrate that disaster issues are not only related to natural factors but are also influenced by community social communication patterns. This study aims to analyze disaster communication based on local wisdom to improve preparedness, emergency response, and recovery of disaster-affected communities. The study used a qualitative approach with a case study method. Data collection was conducted through in-depth interviews with traditional leaders, religious leaders, village officials, and affected communities, as well as field observations and documentation studies. The results indicate that the local wisdom of the Gayo community, such as the role of the village reje, mosque imam, customary deliberations, and the value of maintaining natural balance, serves as an effective and trusted disaster communication medium. However, this local wisdom has not been optimally integrated into the formal disaster communication system of the local government. This study recommends strengthening the synergy between modern communication and local wisdom as a sustainable and contextual disaster communication strategy.

This study explores the practice of participatory communication and creative production implemented by the Anggrek Waste Bank along the Ciliwung River as an educational strategy for flood disaster mitigation. The research aims to understand how community-based waste management initiatives can serve as platforms for environmental learning and social empowerment. Using a qualitative approach with a case study method, this study investigates social dynamics, interaction patterns, and meanings constructed by residents through collaborative waste management and creative production activities. Data were collected through observation, in-depth interviews, and documentation. The findings reveal that participatory communication is manifested not only in formal education, counseling, or campaigns, but also in everyday interactions, creative workshops, and collective community work. Creative products such as recycled crafts, soap made from used cooking oil, and eco enzymes function as symbolic communication media that persuasively convey ecological messages while providing tangible economic benefits. These practices foster a sense of ecological responsibility, strengthen social solidarity, and enhance community resilience to flooding. This study concludes that participatory communication integrated with creative production serves as an effective model for promoting sustainable behavior and community-based flood mitigation in urban environments.

Nabire Regency, located in Central Papua Province, is among the regions highly vulnerable to flooding due to persistent and intense rainfall throughout the year. Flood disasters generate multifaceted impacts, including economic losses caused by property damage and business disruptions, social issues such as health problems and psychological distress, and environmental degradation in the form of erosion and water pollution. This study aims to formulate mitigation and adaptation strategies for flood disasters by analyzing community perceptions and evaluating existing measures. The research employs the Likert Scale method to assess public perception and the Analytic Hierarchy Process (AHP) approach to determine the most effective strategies for mitigation and adaptation. The findings reveal that the community possesses a solid understanding of flood events and acknowledges the necessity of implementing mitigation and adaptation efforts. The AHP analysis indicates that the Regional Disaster Management Agency (BPBD) plays a crucial role in executing flood management strategies, particularly within the environmental management domain. The primary recommended strategy is environmental planning and management. Through an integrated and sustainable approach, flood risks are expected to be mitigated more effectively, minimizing adverse impacts on both the community and the environment in Nabire Regency.

Floods are the most frequent natural disasters and cause material and non-material losses. One of the problems faced is the lack of early warning when floods occur. This problem can be overcome with a flood early warning system. This paper discusses the solution to this problem, namely by designing and implementing a real-time flood early warning system using IoT-based Internet of Things (IoT) technology ESP32 MQTT and APK Kodular. The objective of this research, compared to previous studies, shows a gap in the methods used. While previous studies used an IoT-based flood warning system that sends data via SMS or an HTTP server, this study applies real-time monitoring with the MQTT protocol, which allows sending water level data with low latency to the Kodular application for faster and more responsive warnings. The method used is to connect hardware with IoT where ESP32 is a client that sends data to MQTT and will display it in the Kodular APK. This flood early warning system consists of: ultrasonic sensors, ESP32, MQTT cloud, OLED, buzzer, LED, and APK on the phone to receive notifications through a mobile application created using Kodular. This IoT-based system is installed in the Kudu Regency river and can monitor water levels in real-time. Based on a predetermined threshold, the system can activate the LED indicator or buzzer and send an early warning message to the user via the APK on the phone. Test results show that this system functions effectively in providing flood warnings with an accuracy of 1-2 cm and in a timely manner, making it suitable for community-based flood monitoring solutions

Flooding is a hydrometeorological disaster that frequently occurs in Jayapura City, especially in the catchment areas along the Acai River Basin. One of the main factors causing flooding is increased sedimentation triggered by massive land-use changes. This study aims to analyze the relationship between land conversion, increased sedimentation, and flooding in the catchment areas belonging to the Acai River during the period 2014–2024. The method used is a mixed-method approach that combines quantitative, qualitative, and spatial analysis. Data were collected through satellite image interpretation, field surveys, sedimentation measurements, and interviews with the community and related agencies. Spatial analysis was conducted to identify the dynamics of land-use changes and sedimentation zoning. Meanwhile, hydrological analysis was conducted using the Mononobe method and rational calculations to calculate the maximum flood discharge based on annual rainfall and runoff coefficient. The results of the study indicate that over the past decade there has been an increase in built-up land area of ​​more than 80%, which has resulted in an increase in runoff coefficients from 0.223 in 2014 to 0.370 in 2024. The maximum flood discharge has also increased significantly from 60.56 m³/s to 100.41 m³/s. Furthermore, river sedimentation has also increased drastically, especially in the middle and downstream parts of the watershed. The correlation map shows that areas experiencing significant land use conversion are also locations with high sedimentation levels and recurrent flooding. These findings indicate a strong link between land use conversion and increased flood risk through sedimentation mechanisms that provide river channel capacity. Therefore, an integrated watershed management strategy is needed, including controlling land use conversion and restoring riverbank vegetation to minimize the impact of future flooding.

This research was conducted from June to July 2025 in Binjai City, with the primary focus being analyzing the readiness of the Binjai City Regional Disaster Management Agency (BPBD) to implement a flood early warning system utilizing artificial intelligence (AI). The data collection process was conducted through a literature review, which involved reviewing various theories and previous research results regarding the application of AI and Internet of Things (IoT) technology in the context of disaster mitigation. Based on the results of the study, it was found that the use of technologies such as ultrasonic sensors, microcontrollers, fuzzy logic, and automatic notification systems can provide real-time warnings with a high level of accuracy and a fast response. This system enables early detection of rising river levels through automatic measurements, intelligent data processing, and sending notifications to authorities and affected communities within seconds. By integrating historical data and machine learning-based predictions, this system is also able to depict potential flooding before it occurs, providing a longer response time for evacuation. However, the readiness of the Binjai City BPBD still faces various challenges, such as limited digital infrastructure, the need for human resource training in the technology field, and inadequate budget allocation. Therefore, cross-sector collaboration and ongoing policy support are needed for optimal implementation of this system. The use of AI and IoT in early warning systems is not only technically relevant but also urgent in the face of increasing climate change and flood risks. A strategy involving cross-sector collaboration between government, academia, and the private sector is needed to develop an adaptive and sustainable early warning system.

Flooding is a natural disaster that still frequently occurs in Singkep District, Lingga Regency, Riau Islands Province. This disaster has quite serious impacts on the community, both in the economic, social, and health sectors. Therefore, the problem of flooding should be a serious concern for the local government, particularly in improving the effectiveness of coordination between agencies directly involved in flood mitigation efforts. This study aims to determine the coordination process between the Regional Disaster Management Agency (BPBD) and the Public Works and Spatial Planning Agency (PUTR) of Lingga Regency in flood management, as well as to identify obstacles encountered in its implementation. The research method used is qualitative with a descriptive approach. The researcher uses the coordination theory of Harold Koontz which emphasizes four important elements: work planning, meetings or interactions, communication, and division of tasks. Data were collected through in-depth interviews, field observations, and documentation from both related agencies. The results of the study indicate that inter-agency coordination has not been running synergistically. The work plans of each agency have not been fully integrated, resulting in the implementation of the flood mitigation program running independently based on their respective duties and functions. The Regional Disaster Management Agency (BPBD) places greater emphasis on non-structural mitigation approaches such as education and simulations, while the Public Works and Housing Agency (PUTR) focuses on technical aspects such as flood control infrastructure development. Inter-agency meetings remain formal and have not yet become collaborative forums for formulating joint policies. Communication and task allocation have occurred, but are limited to the information dissemination stage. Key obstacles to this coordination include budget constraints, a lack of competent personnel, and low public awareness and participation in supporting mitigation programs. The lack of drainage construction in several affected villages also demonstrates weak inter-agency integration in program implementation.