Flood is one of the disasters that often hit various regions in Indonesia, specifically in West Kalimantan. The floods in Nanga Pinoh District, Melawi Regency, submerged 18 villages and thousands of houses. Therefore, this study aimed to map flood risk areas in Nanga Pinoh and their environmental impact. Secondary data on the slope, total rainfall, flow density, soil type, and land cover analyzed with the multi-criteria GIS analysis were used. The results showed that the location had low, medium, and high risks. It was found that areas with high, prone, medium, and low risk class are 1,515.95 ha, 30,194.92 ha, 21,953.80 ha, and 3.14 ha, respectively. These findings implied that the GIS approach and multi-criteria analysis are effective tools for flood risk maps and helpful in anticipating greater losses and mitigating the disasters.

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Tujuan dalam pengabdian masyarakat ini adalah dapat meningkatan kesadaran lingkungan pada masyarakat melalui sosialisasi daur ulang sampah rumah tangga pada masyarakat bantaran Sungai Kapuas di sekitar Gang H. Hasan Pontianak Tenggara. Metode dalam sosialisasi daur ulang sampah sebagai upaya peningkatan kesadaran lingkungan pada masyarakat Bantaran Sungai Kapuas dibagi menjadi 3 (tiga) tahapan yaitu, persiapan, pelaksanaan dan evaluasi. Kegiatan yang dilaksanakan meliputi sosialisasi tentang dampak yang ditimbulkan sampah, penyuluhan daur ulang sampah dengan melakukan praktek dalam daur ulang sampah non organik dan kegiatan edukatif-kreatif dalam bentuk perlombaan kreativitas daur ulang sampah. Segala kegiatan yang dilakukan berjalan lancar sesuai dengan target dan luaran yang telah direncanakan. Berdasarkan hasil angket diketahui bahwa kesadaran masyarakat terhadap lingkungan sebelum program pengabdian masuk kriteria Cukup persentase 43.75% dan setelah dilakukan program pengabdian berada pada kriteria Baik dengan persentase 15.6% dari 32 responden. Kegiatan yang dilaksanakan memberi gambaran bahwa kegiatan ini membawa peningkatan kesadaran terhadap lingkungan pada masyarakat meliputi Pengetahuan, sikap dan tindakan terhadap lingkungan khususnya sungai. Program ini juga memberi inspirasi kepada masyarakat bahwa sampah bukan akhir dari efektifitas suatu barang namun dengan daur ulang, sampah dapat menjadi barang yang lebih bernilai kreatif dan ekonomis.

<p><em>This study aims to determine 1) the mangrove vegetation density index, 2) the health of mangrove plants in Sungai Batang Village to Kuala Secapah. The data used in this study is the image of Sentinel-2A, dated June 8, 2020. The data taken are vegetation density (NDVI) and mangrove health. The method in this study uses the vegetation index transformation (NDVI). Data analysis used the supervised classification method and the vegetation density index (NDVI). The results showed that the NDVI value of -1 – 0.32 indicates a sparse vegetation density, a value of 0.33 – 0.42 indicates a medium density and 0.43 – 1 indicates a dense density. From this NDVI index value, it can be used as a basis for classifying the health of mangrove vegetation. The health of mangrove vegetation based on the vegetation index value of 0.43 – 1 (meet) indicates that the health of the mangrove vegetation is very good. Vegetation value 0.33 – 0.42 (moderate) indicates good health of mangrove vegetation and vegetation index value -1 – 0.32 (rare) indicates poor vegetation health. Mangrove health level is very good with an area of 3.0314 km², healthy has an area of 0.204806 km² and poor health has an area of 0.625875 km².</em></p>