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All Journal Jurnal Ilmu Lingkungan JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Jurnal Teknik Sipil Journal of Degraded and Mining Lands Management Jurnal Teknik Sipil SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan JURNAL SAINTIS GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Lowland Technology International Jurnal Rekayasa Teknik Sipil dan Lingkungan Jurnal Teknologi Lingkungan Lahan Basah JUARA: JURNAL WAHANA ABDIMAS SEJAHTERA Aceh International Journal of Science and Technology

Henny Herawati

Civil Engineering - Tanjungpura University

Author-ID : 660771

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Analisis Spasial Risiko Banjir Bandang Akibat Keruntuhan Bendungan Alami pada DAS Krueng Teungku, Kabupaten Aceh Besar, Provinsi Aceh -, Azmeri; Fatimah, Eldina; Herawati, Henny; Sundary, Devi; Isa, Amir Hamzah
Jurnal Teknik Sipil Vol 24, No 3 (2017)
Publisher : Institut Teknologi Bandung

AbstrakPenelitian ini menyajikan hasil analisis spasial risiko bencana banjir bandang akibat keruntuhan bendunganÂ alam pada Daerah Aliran Sungai Krueng Teungku Kecamatan Seulimeum, Kabupaten Aceh Besar, Provinsi Aceh.Â Parameter kerentanan merupakan gabungan komponen kerentanan sosial dan kerentanan fisik. Selanjutnya dariÂ parameter ancaman dan kerentanan tersebut, dilakukan analisis risiko melalui penentuan klasifikasi risiko bencanaÂ banjir bandang untuk daerah hilir bendungan. Secara keseluruhan daerah berisiko seluas 32,02 hektar berdasarkanÂ pembentukan 15 grid (100 meter horisontal x 100 meter sejajar tebing sungai). Klasifikasi tingkat risiko untukÂ daerah hilir bendungan alam Krueng Teungku 5 wilayah termasuk dalam Tingkat Risiko Tinggi, 8 wilayahÂ Tingkat Risiko Sedang dan 2 wilayah Tingkat Risiko Ringan. Kelas risiko sedang mendominasi seluas 23,33 hektarÂ atau 72,85% dari luas total daerah yang berisiko. Kemudian diikuti oleh kelas risiko tinggi seluas 6,29 hektar atauÂ 19,64% dari luas total daerah yang berisiko. Kelas risiko rendah seluas 2,41 hektar atau 7,51% dari luas totalÂ daerah yang berisiko. Klasifikasi tingkat risiko bencana banjir bandang ini berguna untuk meningkatkanÂ kesiapsiagaan masyarakat di hilir bendungan alam untuk meminimalisir risiko bencana banjir bandang yangÂ merupakan bencana berulang pada Desa Beureunut.AbstractThis research presents the results of spatial analysis of flash flood disaster risk due to the collapse of natural damÂ at the watershed Krueng Teungku, Seulimeum sub-district, Aceh Besar Regency, Aceh Province. The vulnerabilityÂ parameter is a combination of components of social vulnerability and physical vulnerability. Furthermore, basedÂ on the parameters of these hazard and vulnerabilities, risk analysis was done through the determination of flashÂ flood risk classification for downstream area of the dam. In general, the risk area covered 32.02 hectares based onÂ the formation of 15 grids (100 meters horizontal x 100 meters parallel river cliff). Based on risk level classificationÂ of the natural downstream of Krueng Teungku, there were 5 areas included in the High Risk Level, 8 areas inÂ Medium Risk areas, and 2 areas in Risk Level Light. The medium level was the most dominant category whichÂ covers 23.33 hectares or 72.85% of the total area. The high risk areas comprises of 6.29 hectares or 19.64% ofÂ total area area followed by low risk class covering an area of 2.41 hectares or 7.51% of total area. TheÂ classification of flash flood disaster risk level is useful to improve community preparedness in downstream of aÂ natural dam to minimize the risk of flash flood disaster which is a recurrent disaster in Beureunut Village.

Pengaruh Hidrotopografi dan Peruntukan Lahan Terhadap Saluran Tersier Daerah Rawa Pinang Dalam: The Effect of Hydrotopography and Land Use on Tertiary Canal in Rawa Pinang Dalam Henny Herawati; Eko Yulianto; Azmeri
JURNAL SAINTIS Vol. 20 No. 01 (2020)
Publisher : UIR Press

[ID] Daerah Rawa Pinang Dalam merupakan bagian dari daerah rawa di kawasan Pinang Komplek yang berada di Kabupaten Kubu Raya Provinsi Kalimantan Barat. Tinggi muka air tanah Daerah Rawa Pinang Dalam dipengaruhi oleh pasang surut air laut. Daerah Pinang Dalam diusahakan oleh penduduk sebagai lahan pertanian. Namun hasil produksi pada daerah ini belum optimal yang disebabkan oleh belum baiknya jaringan tata air, dimana sebagian besar daerah tersebut merupakan daerah genangan, sering mengalami banjir pada musim penghujan serta mengalami kekeringan pada musim kemarau. Penelitian ini bertujuan untuk mengetahui jenis dan pengaruh hidrotopografi lahan terhadap saluran tersier, sehingga dapat diperoleh dimensi saluran tersier sesuai dengan peruntukan lahan di daerah rawa Pinang Dalam. Data primer pada penelitian ini yaitu data hidrometri dan data pasang surut, sementara data sekunder yang digunakan yaitu data hidrologi dan data topografi serta peta-peta yang diperlukan dalam analisis hidrotopografi. Data tersebut merupakan dasar dalam melakukan kajian dan analisis hidrometri dan topografi yang diperlukan untuk mengetahui hidrotopografi lahan dengan memperhatikan peruntukan lahan. Hasil penelitian menunjukkan bahwa jenis hidrotopografi lahan di daerah rawa Pinang Dalam terdiri dari jenis hidrotopografi B, C dan D. Berdasarkan jenis hidotopografi dan peruntukan lahan, terdapat kriteria tertentu mengenai kedalaman optimum untuk saluran tersier dalam sebuah jaringan tata air. Saluran tersier yang diperuntukkan sebagai lahan perkebunan sebaiknya diupayakan untuk memiliki kedalaman yang dapat mempertahankan muka air tanah dalam kisaran 60 hingga 90 centimeter, sementara elevasi muka air untuk tanaman padi sawah dipertahankan setinggi mungkin dengan kedalaman perakaran minus (-)10 sampai dengan -30 centimeter. [EN] The Pinang Dalam swamp area is a part of Pinang Komplek swamp area which is located in Kubu Raya Regency, West Kalimantan Province. Groundwater table in Pinang Dalam swamp area is affected by tides. Pinang Dalam area is cultivated by the population as agricultural land. But the production results in this area are not optimal due to the lack of a good water system, where most of the area is inundated, often experiences floods during the rainy season and experiences drought in the dry season. This research aims to identify the type and effects of land hydrotopography on the tertiary channel, thus the dimension of tertiary channel that is suitable for the allocated land use is obtained. The primary data in this study are hydrometric and tidal data, while secondary data used are hydrological and topographic data and maps needed in hydrotopographic analysis. These data are the basis for conducting studies and analysis of hydrometry and topography needed to the hydrotopography of land while taking the land use into account. The results showed that the hydrotopographic type of land in the Pinang Dalam swamp area consisted of hydrotopographic types B, C and D. Based on the hydotopography type and land use, there are certain criteria regarding the optimum depth for tertiary channels in a water system. Tertiary canals on land allocated as plantation area should be striven to have a depth that can maintain water table in the range of 60 to 90 centimeters, while the water level elevation for lowland rice plants should be maintained as high as possible with a rooting depth of minus (-) 10 to -30 centimeters.

Evaluasi Kinerja Tampungan Waduk Selorejo Menggunakan Perangkat Lunak HEC-HMS: Performance Evaluation of Selorejo Reservoir Using HEC-HMS Software Christian Cahyono; Dhanny Susetyo; Henny Herawati; Juliastuti
JURNAL SAINTIS Vol. 21 No. 01 (2021)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2021.vol21(01).6695

[ID] Permasalahan banjir merupakan permasalahan pengelolaan air yang sering terjadi di Indonesia. Untuk mengatasi permasalahan tersebut dibuat sebuah struktur yaitu waduk yang berfungsi sebagai pengendali banjir. Namun seiring waktu tampungan waduk akan semakin menurun akibat adanya akumulasi sedimen yang terbawa oleh air sungai yang masuk ke dalam waduk dan mengendap. Sehingga diperlukan evaluasi kinerja tampungan waduk tersebut, Permasalahan ini juga dialami oleh Waduk Selorejo yang terletak di Kabupaten Malang. Untuk melakukan evaluasi kinerja tampungan waduk digunakan bantuan perangkat lunak HEC-HMS yang dapat mensimulasikan debit banjir yang masuk beserta elevasi tampungan waduk. Berdasarkan hasil analisis tampungan Waduk Selorejo mampu untuk mengendalikan banjir periode ulang desain awal nya yaitu periode ulang 1000 tahun. Selain itu Waduk Selorejo juga mampu menampung debit banjir Probable Maximum Flood (PMF) apabila muka air awal waduk diturunkan sampai elevasi +605 m. [EN] Flood problem is a water management problem that often occurs in Indonesia. To overcome this problem, a structure is created, namely DAM that functions as a flood controller. However, over time the reservoir storage will decrease due to the accumulation of sediment carried by river water that enters the reservoir. So it is necessary to evaluate the performance of the Rervoir storage. This problem is also experienced by the Selorejo DAM which is located in Malang Regency. To evaluate the performance of the reservoir storage, the help of HEC-HMS software is used which can simulate the incoming flood discharge along with the elevation of the reservoir. Based on the analysis, the Selorejo DAM is able to control the flood of its initial design period which is the 1000-year return period. In addition, the Selorejo Reservoir is also able to accommodate the Probable Maximum Flood (PMF) flood discharge if the initial water level of the reservoir is lowered to an elevation of +605 m.

Analisis Spasial Risiko Banjir Bandang Akibat Keruntuhan Bendungan Alami pada DAS Krueng Teungku, Kabupaten Aceh Besar, Provinsi Aceh Azmeri Azmeri; Eldina Fatimah; Henny Herawati; Devi Sundary; Amir Hamzah Isa
Jurnal Teknik Sipil Vol 24 No 3 (2017)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2017.24.3.6

AbstrakPenelitian ini menyajikan hasil analisis spasial risiko bencana banjir bandang akibat keruntuhan bendungan alam pada Daerah Aliran Sungai Krueng Teungku Kecamatan Seulimeum, Kabupaten Aceh Besar, Provinsi Aceh. Parameter kerentanan merupakan gabungan komponen kerentanan sosial dan kerentanan fisik. Selanjutnya dari parameter ancaman dan kerentanan tersebut, dilakukan analisis risiko melalui penentuan klasifikasi risiko bencana banjir bandang untuk daerah hilir bendungan. Secara keseluruhan daerah berisiko seluas 32,02 hektar berdasarkan pembentukan 15 grid (100 meter horisontal x 100 meter sejajar tebing sungai). Klasifikasi tingkat risiko untuk daerah hilir bendungan alam Krueng Teungku 5 wilayah termasuk dalam Tingkat Risiko Tinggi, 8 wilayah Tingkat Risiko Sedang dan 2 wilayah Tingkat Risiko Ringan. Kelas risiko sedang mendominasi seluas 23,33 hektar atau 72,85% dari luas total daerah yang berisiko. Kemudian diikuti oleh kelas risiko tinggi seluas 6,29 hektar atau 19,64% dari luas total daerah yang berisiko. Kelas risiko rendah seluas 2,41 hektar atau 7,51% dari luas total daerah yang berisiko. Klasifikasi tingkat risiko bencana banjir bandang ini berguna untuk meningkatkan kesiapsiagaan masyarakat di hilir bendungan alam untuk meminimalisir risiko bencana banjir bandang yang merupakan bencana berulang pada Desa Beureunut.AbstractThis research presents the results of spatial analysis of flash flood disaster risk due to the collapse of natural dam at the watershed Krueng Teungku, Seulimeum sub-district, Aceh Besar Regency, Aceh Province. The vulnerability parameter is a combination of components of social vulnerability and physical vulnerability. Furthermore, based on the parameters of these hazard and vulnerabilities, risk analysis was done through the determination of flash flood risk classification for downstream area of the dam. In general, the risk area covered 32.02 hectares based on the formation of 15 grids (100 meters horizontal x 100 meters parallel river cliff). Based on risk level classification of the natural downstream of Krueng Teungku, there were 5 areas included in the High Risk Level, 8 areas in Medium Risk areas, and 2 areas in Risk Level Light. The medium level was the most dominant category which covers 23.33 hectares or 72.85% of the total area. The high risk areas comprises of 6.29 hectares or 19.64% of total area area followed by low risk class covering an area of 2.41 hectares or 7.51% of total area. The classification of flash flood disaster risk level is useful to improve community preparedness in downstream of a natural dam to minimize the risk of flash flood disaster which is a recurrent disaster in Beureunut Village.

Valuasi Dampak Banjir Di Kabupaten Landak, Kalimantan Barat Gusti Rachmad Rabsanjani; Aji Ali Akbar; Henny Herawati
Jurnal Ilmu Lingkungan Vol 20, No 1 (2022): January 2022
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.20.1.65-75

Banjir merupakan becana yang kerap sekali terjadi pada musim hujan, banjir dapat menyebabkan kehilangan harta benda maupun korban jiwa. Valuasi ekonomi akibat terjadinya banjir adalah salah satu cara yang dapat digunakan untuk menghitung kerugian akibat terjadinya bencana banjir. Tidak adanya kajian mengenai kerentanan dan kerugian ekonomi akibat banjir pada tiga desa di Kecamatan Ngabang yaitu Desa Raja, Hilir Tengah dan Hilir Kantor adalah alasan dilakukannya penelitian ini. Tujuan dilakakukan penelitian ini adalah untuk mengidentifikasi dan menginventarisasi besarnya tingkat kerentanan terhadap banjir yang terjadi dan menghitung valuasi kerugian ekonomi akibat terjadinya bencana banjir. Metode yang digunakan dalam menganalisis kerentanan banjir menggunakan software ArcMap 10.3 adalah Analisa atribut meliputi pemberian skor kelas curah hujan, pemberian skor kelas tutupan lahan, pemberian skor kelas kemiringan lahan, pembobotan dan Analisa AHP. Metode yang digunakan untuk menghitung estimasi kerugian akibat banjir menggunakan metode ECLAC. Hasil yang didapat dalam penelitian ini adalah perubahan tutupan lahan mengalami penurunan dan peningkatan luasan permukiman, pertanian/sawah, dan lahan terbuka/semak, Curah hujan yang tinggi dan kelerengan daerah yang landai menjadi parameter penyebab terjadinya banjir. Pada estimasi nilai kerugian akibat banjir dengan nilai kerugian menggunakan USD dan Emas pada tahun yang ditentukan dengan hasil total kerugian pada tahun 1973 adalah 73,7 Juta dollar, tahun 1989 180 juta dollar, tahun 1994 261 juta dollar, tahun 2000 261juta dollar, tahun 2010 1,1 miliar dollar, dan tahun 2020 1,9 miliar dollar.ABSTRACTFlood is a plan that often occurs in the rainy season, floods can cause loss of property and fatalities. Economic valuation due to flooding is one way that can be used to calculate losses due to flood disasters. The absence of studies on vulnerability and economic losses due to flooding in three villages in Ngabang Subdistrict namely Desa Raja, Hilir Tengah and Hilir Kantor is the reason for this research. The purpose of this study is to identify and inventory the level of vulnerability to floods that occur and calculate the valuation of economic losses due to flood disasters. The methods used in analyzing flood vulnerabilities using ArcMap 10.3 software are attribute analysis including rainfall class scoring, giving land cover class scores, awarding land slope class scores, weighting and AHP Analysis. The method used to calculate the estimated loss due to flooding uses the ECLAC method. The results obtained in this study are changes in land cover experiencing a decrease and increase in the area of settlements, agriculture / rice fields, and open land / bush, high rainfall and marbles of sloping areas become parameters of the cause of flooding. In the estimated value of losses due to floods with the value of losses using USD and Gold in the specified year with the total loss in 1973 was 73.7 million dollars, in 1989 180 million dollars, in 1994 261 million dollars, in 2000 261 million dollars, in 2010 1.1 billion dollars, and in 2020 1.9 billion dollars.

SOSIALISASI UPAYA PEMBASAHAN LAHAN GAMBUT DENGAN PEMBANGUNAN SUMUR BOR SECARA PARTISIPATIF Henny Herawati; Kartini Kartini; Aji Ali Akbar; Tatang Abdurrahman
SELAPARANG Jurnal Pengabdian Masyarakat Berkemajuan Vol 4, No 1 (2020): November
Publisher : Universitas Muhammadiyah Mataram

ABSTRAKPada musim kemarau lahan gambut sering mengalami kekeringan. Kondisi kering dapat menyebabkan lahan gambut mudah terbakar. Untuk menjaga lahan gambut dari kondisi kering, maka perlu dilakukan upaya pembasahan lahan gambut. Saat musim kemarau ketersedian air permukaan sulit diperoleh. Sumber air yang dapat diandalkan adalah air tanah. Pengambilan air tanah baik dan terkendali, perlu dilakukan dengan pengetahuan dan teknologi sederhana. Hal ini diperlukan agar pembasahan lahan gambut dapat dilakukan secara partisipatif. Untuk mencapai tujuan, maka dilakukan upaya sosialisasi tentang metode pembuatan sumur bor yang dapat dilakukan oleh masyarakat secara partisipatif. Sosialisasi ini merupakan salah satu kegiatan pengabdian kepada msayarakat (PKM) yang dilakukan oleh Tim Pelaksana, dengan pendanaan dari Kementerian Riset, Teknologi dan Pendidikan Tinggi Tahun 2019. Kegiatan PKM ini dilakukan di Desa Wajok Hilir Kecamatan Siantan Kabupaten Mempawah Provinsi Kalimantan Barat. Kegiatan ini diawali dengan melakukan indept interview untuk mengali permasalahan di lokasi kegiatan. Sosialisasi dilakukan dengan metode ceramah dan praktek lapangan dengan melibatkan masyarakat setempat. Masyarakat sangat antusias mengikuti sosialisasi. Dampak kegiatan adalah meningkatnya kesehatan lingkungan dan masyakat serta dapat sebagai sumber air baku untuk keperluan sehari-hari. Kegiatan ini juga memberi dampak peningkatan pengetahuan dan kemampuan masyarakat setempat khususnya, dan diharapkan dapat menyebarluaskan informasi kepada masyarakat luas. Kata kunci: lahan gambut; kekeringan, sumur bor; partisipatif; wajok hilir. ABSTRACTThe peatlands often experience drought in the dry season. Dry conditions can cause peatlands to burn easily. It is necessary to make efforts to wet the peatlands to protect peatlands from dry conditions. During the dry season, it is difficult to obtain surface water. A reliable source of water is groundwater. The extraction of groundwater is good and controlled, it needs to be done with simple knowledge and technology. This is necessary so that the wetting of the peatlands can be done in a participatory manner. To achieve the goal, an effort was made to socialize the method of making boreholes that can be done by the community in a participatory manner. This socialization is one of the community service (PKM) carried out by the implementation team, with funding from the Ministry of Research, Technology, and Higher Education in 2019. This PKM activity was carried out in Wajok Hilir Village, Siantan District, Mempawah Regency, West Kalimantan. This activity begins with conducting an in-depth interview to multiply the problems at the location of the activity. The socialization was carried out by lecturing methods and field practice involving the local community. The community was very enthusiastic about participating in the socialization. The impact of these activities is to improve the health of the environment and the community as well as to serve as a source of raw water for daily needs. This activity also has an impact on increasing the knowledge and capacity of the local community in particular, and it is hoped that it can disseminate information to the wider community. Keywords: peatlands; drought, boreholes; participatory; wajok hilir.

The Suitability of Artificial Neural Network Application to Predict Sekayam River Discharge in West Kalimantan, Indonesia Henny Herawati; Suripin Suripin; Suharyanto Suharyanto; Trias Wigyarianto; Kartini Kartini
Lowland Technology International Vol 22 No 2 (2020): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i2, Septemb.773

Data availability of on a river discharge is the key to waterworks planning. Unfortunately, not all rivers have long and complete historical data records to support the planning. Therefore, a hydrological model capable of predicting long-term river discharge is needed. There are many hydrologic models that have been developed, ranging from the simplest ones by using empirical black-box model, to complex ones with physical white-box model. This study used ANN application due to its data requirement that is applicable to be met in study area, Sekayam River, a part of Kapuas Subwatershed, namely Kembayan Watershed. Although the available data is relatively minimal, which is only rainfall and evaporation data, the ANN application can predict river discharge that is close to the measurement in the field, with a mean square error (MSE) of 0.25. The results show that ANN application was able to predict river discharge reasonably with climate and rainfall data as the input. Deviation may occur due the broad scope of the research area, Kembayan Watershed, a Kapuas Subwatershed which amounted to 2,290 km2.

Analisis Keruntuhan Bendungan Akibat Piping dan Pemetaan Genangan Banjir (Studi Kasus : Bendungan Saguling): Dam Break Analysis Due To Piping And Flood Mapping (Case Study Of Saguling DAM) Bahri Suhada; Hari Nugroho; Suprapto; Henny Herawati
JURNAL SAINTIS Vol. 22 No. 01 (2022)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2022.vol22(01).8081

[ID] Salah satu upaya penanggulangan kegagalan bendungan adalah penyusunan Rencana Tindak Darurat. Rencana tindak darurat memuat peta genangan banjir akibat keruntuhan. Peta genangan banjir merupakan aspek penting karena menjadi dasar dalam pengambilan keputusan penanggulanan kegagalan bendungan. Peta genangan banjir diperoleh dari analisis keruntuhan bendungan. Penelitian ini melakukan analisis keruntuhan bendungan Bendungan Saguling yang merupakan bendungan kaskade di Wilayah Sungai Citarum. Analisis keruntuhan dalam penelitian ini terdiri analisis hidrograf keruntuhan menggunakan HEC-HMS, penelusuran banjir menggunakan HEC-RAS, dan pengolahan informasi spasial menggunakan QuantumGIS. Skenario keruntuhan bendungan yang dimodelkan adalah keruntuhan akibat piping saat sunnyday dengan variasi initial piping pada 1/3 ketinggian, ½ ketinggian dan 2/3 ketinggian bendungan. Hasil analisis hidrograf keruntuhan dari ketiga skenario tersebut cenderung mirip dengan debit puncak keruntuhan sebesar 61193,6 m3/dt. Keruntuhan Bendungan Saguling mengakibatkan Bendungan Cirata mengalami overtopping. Sedangkan Bendungan Jatiluhur tidak mengalami overtopping apabila Bendungan Cirata tidak mengalami keruntuhan. Peta genangan banjir akibat keruntuhan Bendungan Saguling pada ketiga skenario cenderung mirip. Jumlah desa terdampak dengan jarak dari Bendungan Saguling kurang dari 10 km sebanyak 6 desa daro 10 desa. Desa Baranangsiang dan Desa Saguling adalah desa pertama yang terdampak banjir akibat keruntuhan Bendungan Saguling dengan estimasi waktu kedatangan banjir ± 0,25 jam semenjak dimulai keruntuhan [EN] One of the efforts to overcome dam failure is preparing an Emergency Action Plan. The emergency action plan contains a map of the flood inundation due to the collapse. The flood inundation map is essential because it becomes the basis for making dam failure management decisions. The flood inundation map was obtained from the dam break analysis. This study analyzes the Saguling Dam collapse, a cascade dam in the Citarum River Basin. The failure analysis in this study consisted of collapse hydrograph analysis using HEC-HMS, flood routing using HEC-RAS, and processing of spatial information using QuantumGIS. The dam failure scenario modelled is due to piping on sunny days with initial piping variations at 1/3 height, height and 2/3 height of the dam. The results of the failure hydrograph analysis of the three scenarios tend to be similar to the failure peak discharge of 61193.6 m3/s. The collapse of the Saguling Dam caused the Cirata Dam to be overtopped. Meanwhile, Jatiluhur Dam does not experience overtopping if the Cirata Dam does not collapse. The flood inundation maps due to the collapse of the Saguling Dam in the three scenarios tend to be similar. The number of affected villages less than 10 km from the Saguling Dam is six out of 10 villages. Baranangsiang Village and Saguling Village are the first villages affected by flooding due to the collapse of the Saguling Dam, with an estimated flood arrival time of ± 0.25 hours since the collapse started.

The impact of soil and rock mining on freshwater provisioning services in Peniraman Village, Mempawah Regency, West Kalimantan Boy Rangga; Aji Ali Akbar; Henny Herawati
Journal of Degraded and Mining Lands Management Vol 10, No 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.3905

Various human activities can affect ecosystem services, including mining activities. Since 1960, Peniraman Village has been known for its soil and rock mining. Mining increases the risk of environmental degradation by increasing the demand for freshwater provisioning services. This study aims to assess the impact of damage from mining in Peniraman Village on groundwater potential and the environment's carrying capacity based on ecosystem service. Ecosystem services are analyzed using two determinants: land cover and landscape, with a spatial method. This study resulted in a large forest change between 1972 and 2020, which was estimated to lose 16.5 hectares of forest each year, whereas Peniraman Village will lose its forest in 26 years. There was also a land conversion in primary swamp forests into open land for various community activities from 1972-2020, mostly agriculture, settlement, and plantation. On the other hand, the mining area will be exhausted in 30-40 years given the current mining rate. These actions shifted the class of groundwater provisioning services from very high to very low. The water potential was calculated based on the ecosystem services that have intermediate and low-level class potential in Peniraman Village of 1,077.98 hectares, or 48.15% of the total area. Although 48.6 percent of the Peniraman Village area is still within the safe level for water availability based on supply and demand, the government and community should pay close attention to this issue to avoid further harm.

PELATIHAN DEMPLOT PENGOLAHAN LAHAN TANPA BAKAR GUNA MENINGKATKAN PRODUKTIVITAS KELADI DI DESA WAJOK HILIR Henny Herawati; Kartini Kartini; Tatang Abdurrahman; Aji Ali Akbar
JUARA: Jurnal Wahana Abdimas Sejahtera Volume 2, Nomor 1, Januari 2021
Publisher : Universitas Trisakti

Wajok Hilir Village is a peatland, agricultural have been going on for generations. The taro plant is one of the leading plants. However, in the last 10 years, productivity is only about 3-5 ounces per stem. This has resulted in the community no longer interested in cultivating taro plants. To increase the people's interest in planting taro, it is necessary to carry out training and practice by making a demonstration plot as a pilot. This activity aims to educate partners and residents in Wajok Hilir Village about how to farm taro so that productivity increases. The training provided was in the form of education on land management without burning. The method used in this activity is to provide training with the lecture and discussion method and direct practice in the taro demonstration plot. The partner of this activity is the Palaguna Farmer Group in Wajok Hilir Village. This training activity is a community service activity funded by the Higher Education DRPM 2020 through the Village Partners Development Program (PPDM) scheme. The result of this activity is that taro productivity can be increased and at the same time can increase the knowledge and skills of the Partners and residents of Wajok Hilir Village. This activity is also expected to increase the income of Partners in particular and the people of Wajok Hilir Village in general.

Co-Authors -, Ibrahim - . Azmeri, . AA Sudharmawan, AA Aji Ali Akbar Akbar, Aji Ali Amir Hamzah Isa Apri Ananda Putra Asriah Nurdini M. Aunnurahman Azmeri Azmeri Bahri Suhada Bistari Boy Rangga Budi Satria Panandita Christian Cahyono Devi Nurahmawaty Devi Nurahmawaty Devi Sundary Dhanny Susetyo Eko Yulianto Eko Yulianto Eldina Fatimah Elsy Ivana Clara Ivana Elvira Elvira Faris Zahran Jemi Fransiska Melania Rosita Gatot Yuliana Gunarto, Danang Gusti Rachmad Rabsanjani Hadi Ismanto Hari Nugroho Isa, Amir Hamzah Ismar Dewi Juliastuti Kartini - Kartini Kartini Kiki Prio Utomo Maryuni, Sri Nur Aisya Amalia nurhayati nurhayati Nurul Hidayati Ochih Saziati Ochih Saziati Reza Baihaqi Rusdiyono S. Suripin Stefanus Barlian Soeryamassoeka Suci Suci Suharyanto Suharyanto Sulistyarini, Sulistyarini Sundary, Devi Suprapto Tatang Abdurrahman Tiara Trias Wigyarianto Umar Umar Y. Touvan Juni Samodra Ya' Dhally Fakhrully Yoke Lestyowati

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