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Analisis Sedimentasi di Tampungan Embung Daerah Irigasi Jurug Lendah Kulon Progo Ahmad Hakim Bintang Kuncoro; Diah Setyati Budiningrum; Istianah Istianah
Jurnal Fondasi Vol 11, No 1 (2022)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v0i0.14402

Abstract

Daerah irigasi Jurug merupakan salah satu kawasan pertanian di daerah Kulon Progo. Penyediaan air untuk daerah irigasi tersebut bersumber dari tampungan embung yang berada di hulu daerah irigasi tersebut. Beberapa tahun terakhir terjadi pendangkalan tampungan akibat sedimentasi yang mengakibatkan berkurangnya kapasitas tampungan embung, serta tertutupnya pintu intake irigasi akibat penumpukan sedimen tersebut. Analisis menggunakan model USLE untuk memprediksi laju sedimentasi akibat erosi lahan yang terjadi pada daerah tangkapan hujan di hulu embung Jurug. Memperkirakan laju sedimentasi pada embung Jurug bertujuan untuk mempersiapkan langkah ke depan sebagai bentuk penanganan dari dampak sedimentasi yang terjadi. Hasil analisis menunjukkan jumlah rerata erosi yang terjadi di DAS di hulu Embung D.I. Jurug adalah sebesar 20,26 ton/ha/tahun dan jumlah sedimen selama 5 tahun sebesar 97,06 ton sedimen. Penanganan sedimen secara non teknis dapat dilakukan penghijauan. Penanganan secara teknis dengan melakukan pengerukan sedimen di tampungan embung, dan membangun sedimen trap di hulu tampungan embung.
Analisis Kapasitas Saluran Drainase Perumahan Jagansari Residence Kabupaten Grobogan Istianah Istianah; Ahmad Hakim Bintang Kuncoro; Diah Setyati Budiningrum
Jurnal Teknik Sipil Institut Teknologi Padang Vol 10 No 1 (2023): Jurnal Teknik Sipil Institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jts.2023.V1001.052-63

Abstract

Pengembangan kawasan perumahan Jagansari Residence terletak di Dusun Jagansari, Desa Kuwaron, Kecamatan Gubug, Kabupaten Grobogan, Jawa Tengah dengan luas area ± 2 Ha. Lahan kawasan tersebut merupakan lahan terbuka bekas area pengolahan padi pasca panen serta perkebunan. Dengan adanya pembangunan kawasan tersebut menjadi kawasan pemukiman, maka akan mempengaruhi kondisi sistem drainase di sekitar perumahan dan juga mengakibatkan berkurangnya lahan terbuka yang berfungsi sebagai resapan air hujan. Tujuan penelitian ini adalah melakukan perhitungan mengenai debit rencana, kapasitas saluran eksisting, serta kapasitas saluran yang mampu menampung debit rencana. Secara garis besar terdapat 2 analisis, yaitu analisis hidrologi dan hidrolika. Analisis hidrologi terdiri dari analisis rerata hujan kawasan metode poligon thiessen, analisis frekuensi untuk menentukan hujan kala ulang dan metode rasional dalam menentukan debit banjir. Analisis hidrolika menggunakan metode manning untuk menentukan kecepatan aliran serta tampang melintang ekonomis dalam menentukan dimensi saluran drainase. Kawasan Perumahan Jagansari Residence dibagi menjadi 3 sub drainase. Hasil analisis menunjukkan bahwa pada sub drainase 1 memiliki nilai Q2 dan Q5 tertinggi secara berurutan adalah 0,26 m3/s dan 0,31 m3/s. Kapasitas rencana eksisting saluran drainase menggunakan U-Ditch ukuran  untuk semua jenis saluran menunjukkan bahwa pada saluran primer tidak mencukupi kapasitasnya. Untuk rencana ukuran U-Ditch yang sesuai adalah ukuran  pada saluran tersier, ukuran  pada saluran sekunder, dan ukuran  pada saluran primer.
Study on Determining PRH Locations for Flood and Drought Mitigation in Semarang Regency Bambang Tutuko; Fitria Maya Lestari; Edy Susilo; Istianah Istianah
BRILIANT: Jurnal Riset dan Konseptual Vol 11 No 2 (2026): Volume 11 Nomor 2, Mei 2026
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v11i2.2456

Abstract

Population growth, land-use conversion, and the reduction of vegetation cover have led to increasingly frequent floods and droughts in Semarang Regency. These conditions exacerbate surface runoff and reduce the soil’s capacity to store water, resulting in inundation during the rainy season and drought during the dry season. The objective of this study is to determine the location for installing Horizontal Recharge Pipes (HRP), which play an important role, particularly in flood-prone areas, by enhancing groundwater infiltration as a water reserve. The method applied in this research involves calculating the magnitude of runoff discharge in areas with potential flood inundation, which is then simulated with the application of HRP installation to determine the number of HRPs required to reduce flooding. Drought-prone areas were analyzed using satellite imagery to identify suitable HRP locations. In the Klegung watershed, 10 HRP units are required; in the Curug watershed, 460 units; and in the Lodong watershed, 835 units, all using a 12-inch diameter. Drought analysis using Landsat imagery identified dry areas in East Ungaran, Susukan, Suruh, Bancak, and Pringapus subdistricts. The installation points for HRPs can be prioritized based on areas experiencing inundation or drought. The implementation of HRPs is expected to infiltrate surface runoff effectively, thereby reducing flood risk while simultaneously increasing groundwater availability in Semarang Regency.
Analisis Reduksi Debit Banjir Sistem Drainase Kali Kencing Di Kabupaten Kudus Istianah Istianah; Fitria Maya Lestari; Bambang Tutuko
Jurnal Teknik Indonesia Vol 7, No 1 (2026): JTI (Jurnal Teknik Indonesia)
Publisher : Universitas Darul Ulum Islamic Centre Sudirman GUPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/jti.v7i1.948

Abstract

Flooding is a common issue affecting various regions in Indonesia, particularly in densely populated urban areas. High rainfall intensity leading to river overflow, dense residential settlements, and inadequate drainage systems and environmental conditions are key factors contributing to flood disasters. This study aims to analyze the drainage capacity of the Kali Kencing channel, evaluate the existing drainage system, and assess the potential flood reduction through the implementation of a polder system within the Kali Kencing drainage network. A qualitative research method is applied, incorporating hydrological and hydraulic analyses, which are further simulated to model the relationship between retention pond storage and optimal pump capacity. The analysis reveals that the current drainage capacity of Kali Kencing is insufficient to convey the existing discharge, resulting in runoff that affects residential areas and agricultural fields. The existing system only includes a small long-storage facility and lacks adequate pumping capacity. Therefore, a retention pond covering 4.5 hectares is proposed to temporarily store excess water during elevated water levels in the Wulan River. Simulation results indicate that the retention pond can reduce peak flood discharge from 65.10 m³/s to 36.00 m³/s, achieving a 55% reduction. Additionally, the installation of two flood pumps with a capacity of 5 m³/s each, along with one pump of 1 m³/s for low-flow operation, is recommended to enhance system performance.
Edukasi dan Pemberdayaan Masyarakat Kampung Pancasila Tlogosari Kulon melalui Pilah Sampah Eco-Enzim Biopori dan Komposter Mudjiastuti Handajani; Istianah Istianah; Diah Setyati Budiningrum; Hani Purwanti
Jurnal Pengabdian KOLABORATIF Vol. 4 No. 1 (2026): January
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v4i1.13163

Abstract

Population growth has led to a significant increase in solid waste generation. In Semarang City, approximately 1,110 tons of waste are produced daily. One of the waste management initiatives implemented by the Environmental Agency is the waste bank program. However, this program has not yet been implemented in all areas. In Tlogosari Kulon Subdistrict, for example, no active waste bank group currently operates the program, despite the area being a densely populated residential zone and a flood-prone area. This condition contributes to environmental pollution, unpleasant odors, and potential disease transmission. Through this community service program, it is expected that residents of Kampung Pancasila Tlogosari Kulon will not only gain knowledge but also develop practical skills to manage household waste independently. The methods applied include interactive educational approaches and hands-on practice. The results indicate a significant increase in participants’ average level of understanding, from 42% at the initial stage to 86% after the program. This improvement was driven by direct practical activities, including waste segregation, eco-enzyme production, biopore infiltration holes, and composting. Overall, the program successfully enhanced participants’ environmental awareness, enthusiasm, and active involvement in sustainable household waste management.
Pemberdayaan kepada Masyarakat di Bank Sampah Mulya Sejahtera melalui Pilah Sampah Mudjiastuti Handajani; Istianah Istianah; Diah Setyati Budiningrum; Hani Purwanti; Erialdi Bin Syahrial; Safrinal Sofaniadi; Arien Zahra Sal Sabila; Muhammad Khoirul
Jurnal Pengabdian KOLABORATIF Vol. 4 No. 2 (2026): July
Publisher : Faculty of Engineering, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/kolaboratif.v4i2.15175

Abstract

The main problem in Plalangan Village, Gunungpati Subdistrict, Semarang City, is the low awareness and practical skills of residents in sorting waste at the source and the suboptimal utilization of household composter facilities. This community service activity aims to increase residents' awareness, knowledge, and practical skills in sorting waste and processing organic waste independently. The implementation method applied is participatory training combining interactive education, in the form of socialization regarding the 3R (Reduce, Reuse, Recycle) concept and the Clean Semarang Program, followed by demonstrations and practical simulations of waste sorting using pilot props. The evaluation results showed a highly positive impact, where the participants' average level of cognitive understanding experienced a highly significant increase from 42% in the pre-test to 86% in the post-test. Furthermore, residents successfully mastered practical skills in upstream waste sorting, creating biopori infiltration holes, and operating simple composters. These skills are useful for converting organic waste into compost to support the greening of household yards while simultaneously improving the local community's economic value through the Mulya Sejahtera Waste Bank. In conclusion, the training program in this village has proven effective in transforming community behavior toward sustainable and independent household-based waste management.