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Land-use changes dominated by impervious surfaces in residential areas reduce the natural infiltration capacity of the soil and increase surface runoff, which may lead to flooding and waterlogging. This study aimed to design a rainwater infiltration well system as an effort to reduce surface runoff in Samudera Afroza 3 Housing Estate, Jambi City. A quantitative approach was employed through field surveys, hydrological analysis, soil permeability testing, GIS-based land-use analysis, and infiltration well design in accordance with SNI 8456:2017 and SNI 03-2453-2002 standards. Rainfall analysis was conducted using maximum daily rainfall data from 2014–2023, applying several probability distributions, with the Gumbel distribution identified as the most representative model. The results revealed that the residential area covers 8,104 m², with 91.84% of the land occupied by built-up surfaces, resulting in limited natural infiltration capacity. The average soil permeability value of 0.00024 m/s indicates favorable conditions for the implementation of infiltration wells. Based on the design calculations, 41 Type III infiltration wells are required, providing a total storage capacity of 289.665 m³ and an infiltration discharge of 0.0919 m³/s. The proposed infiltration well system is capable of reducing runoff volumes by 15.044%, 12.486%, and 11.223% for 2-year, 5-year, and 10-year return periods, respectively. Therefore, infiltration wells can be considered an effective alternative for water conservation and runoff management in residential areas.

The utilization of biopore infiltration holes has become one of the simple and effective innovations in environmental management and soil resource conservation, with great potential to support a healthy environment. This community service activity aims to enhance farmers' understanding of the use of biopore infiltration holes as an effort for soil and water conservation as well as sustainable organic waste management. The outreach was conducted on September 7, 2024, at the Kesambi Village Hall, Pucuk District, Lamongan Regency, targeting 12 members of the farmer group. The implementation method of the activity included preparation stages, conducting a pretest, delivering material along with interactive discussions, and concluding with a posttest as an evaluation of the participants' understanding improvement. The results of the activity indicate an increase in the average knowledge score of participants from 81.25 in the pretest to 97.92 in the posttest. This demonstrates that the socialization method applied was effective in enhancing farmers' understanding of the functions, production techniques, and benefits of biopores. This activity is expected to encourage the independent implementation of biopores by farmer groups, both at the household and agricultural levels, as part of environmentally friendly and sustainable land management practices.

To deal with the environmental crisis, greening is an environmental conservation strategy. The concept of greening is needed because regional conditions are developing and the function of space is changing for development. Apart from playing an important role in preserving the environment, humans also have a responsibility to exploit environmental wealth for the ecosystem's survival. The Participatory Action Research (PAR) method builds community commitment to reforestation efforts to preserve the environment. The result is that the climate becomes fresher, healthier, and cooler, nature becomes maintained and clean, and people learn more about greening through planting tree seedlings. Reviving natural aesthetics, using trees as air fresheners, and reducing flooding are the goals of this service initiative.

Effective urban spatial planning is a key element in supporting sustainable urban development. Tangerang, as one of the rapidly growing urban areas, faces significant challenges due to conflicts between increasing population density and the need for green spaces as ecological balancing elements. This study aims to analyze the issues of urban spatial planning in Tangerang, focusing on the factors driving the conflict between population density and the provision of green spaces. A qualitative approach was used, involving secondary data analysis from urban spatial planning documents, government policies, and relevant literature reviews.The findings indicate that high urbanization rates, discrepancies in the implementation of spatial planning policies, and low public awareness of the importance of green spaces are the primary factors exacerbating the problem. Additionally, the lack of green spaces has negative impacts on environmental quality, such as rising urban temperatures, increased flooding, and a decline in residents' quality of life. As a solution, this study recommends integrating spatial planning strategies based on ecological approaches, including optimizing zoning policies, developing vertical gardens in densely populated areas, and enhancing community participation in green space conservation. These findings are expected to contribute to more sustainable urban spatial planning in Tangerang and other cities facing similar challenges.

This community service program is part of the Merdeka Belajar Kampus Merdeka (MBKM) initiative, aiming to create a clean and green environment at MTs Muslimat NU through drainage cleaning and flower planting activities. The program involved teachers and university students as the main participants, without the direct involvement of students. Its primary focus is to raise awareness about the importance of environmental cleanliness and greening efforts to preserve ecosystems. The drainage cleaning was carried out to prevent blockages that could lead to flooding, while flower planting aimed to beautify the school environment and educate participants about the benefits of greening. Through the active involvement of teachers and students, this program is expected to foster positive habits in maintaining cleanliness and environmental sustainability. Additionally, it promotes the value of mutual cooperation, which can be continued by the entire school community to create a healthy and comfortable environment. Supported by the MBKM program, similar initiatives are expected to expand their impact, engage more stakeholders, and contribute significantly to sustainable environmental conservation efforts.

The southern district of Rejowingan in Magelang faces challenges like large dumpstores, poor water quality, floods, and rising food needs. Villagers are working with the Ormawa DPM KM PPK team to address these issues. The government launched the Climate Village Program to improve the region's climate and resilience to natural disasters. Permaculture principles can be applied to organic waste management through maggot cultivation, which reduces waste volume and supports sustainable agriculture. This combination of permaculture and maggot cultivation can be an effective and environmentally friendly model for addressing organic waste and ecosystem sustainability.

Pacal Dam as one of the infrastructures that has an important role in the life of the people of Bojonegoro Regency. Pacal Dam is one of the providers of water resources in meeting the needs of the surrounding community in irrigation and agriculture aspects. In addition, the Pacal Dam is also a water conservation medium which is one of the efforts to reduce surface runoff originating from the upstream of the river so that flooding does not occur downstream. Therefore, in planning, it is necessary to accurately calculate the stability of the weir. Spiral stability calculations are carried out to determine whether the weir is stable enough to withstand the external forces that occur. Factors that can affect stability include the weight of the weir, active and passive earth pressure forces, and the resulting uplift. In the stability analysis of the Pancal Dam, it was found that under normal conditions the SF (safety factor) result was 1.6082822, while in flood conditions the SF result was 1.55237, where the SF value was > 1.5 so it can be concluded that the weir planning has been able to withstand the overturning moment caused by water pressure, soil, and uplift pressure in flood conditions.

The purpose of this study is to examine how the development of cypress conservation in the coastal area of ​​Cemara Pancer Beach, Banyuwangi Regency. Spruce conservation itself aims to rebuild forests that have been damaged by the tsunami in 1994, so that the coast will no longer become arid, and minimize the impact caused by tidal floods and coastal abrasion. With the conservation of fir in the coastal area, the coastal area becomes cooler and shady, so that people from outside the city and within the city are interested in visiting and enjoying the beauty of the cypress beach. Then, from this, economic and tourism activities can be built in the surrounding area. So that this can improve the welfare of the community through ongoing economic activities.

This research aims to analyze the conservation or solutions to flood disaster problems as a community need with a healthy environment. The research was conducted in Sukasari District, Bandung City, West Java Province, with an area of 6.27 km2. The method used in this paper is descriptive analysis and the data used is secondary data. Based on the analysis of the flood hazard map for Bandung City, the research results show that the entire area of Sukasari District is highly prone to flooding. Based on the findings, the overflow of the Cidurian, Cipamokolan, and Cibeureum rivers poses a threat of flooding in Sukasari sub-district. Green Open Spaces in Sukasari District consist of 16 location points spread across 3 sub-districts. The utilization of Green Open Spaces serves to maintain ecosystem balance and increase the availability of clean air and water catchment areas. Solutions to reduce flood disasters include reducing the level of risk, decreasing vulnerability, and enhancing community capacity.

The characteristics of coastal plants in the form of river estuaries, estuaries, and deltas in protected areas in the sub-tropics and tropics are the notions of mangrove plants. It can be concluded that mangrove plants are ecosystems that exist between sea and land with conditions in the form of productive and extensive forests. Mangrove plants are also often called coastal forests, mangrove forests, brackish forests, tidal forests because mangrove plants live near the coast and have an important role in their ecological value to support coastal development activities and marine conservation. This research aims to find out the benefits and functions of mangroves, the types of mangroves, the meaning of mangroves, their role in overcoming some of the existing problems, as well as the differences before and after the planting of mangroves on the coast of Sine Tulungagung. This research method uses qualitative data which is a method for collecting and conducting observations, interviews, documentation, and analysis of various documents such as written documents, namely various journal reference sources and others in a descriptive way.