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Analisis Tren Frekuensi Banjir Kali Mriwong Pradana, Anggara Apriyan; Anggraini, Ellyta; Pambayun, Mahendra Ken; Muhammad, Fuad; Wahyudi, Agus Hari
Majalah Geografi Indonesia Vol 39, No 2 (2025): Majalah Geografi Indonesia
Publisher : Fakultas Geografi, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/mgi.101954

Abstract

Abstract. Pembangunan berkelanjutan berpegang pada prinsip keadilan antar generasi. Banjir menjadi bencana global paling merusak dalam skala tingkat geografis. Lahan yang berubah fungsi peruntukan dan meningkatnya jumlah penduduk menyebabkan terganggunya lokasi penyimpanan cadangan air. Perubahan peruntukan lahan andil dalam meningkatnya bencana banjir. Populasi manusia yang mendiami daerah rawan banjir merasakan dampak kerugian materi dan kesehatan yang semakin parah. Kecamatan Pulung termasuk wilayah dengan curah hujan tinggi di Kabupaten Ponorogo. Kali Mriwong menjadi sungai berdebit handal yang dimanfaatkan untuk irigasi. Perkembangan pertanian semusim di hulu daerah tangkapan air mempengaruhi kontinyuitas debit Kali Mriwong. Sepanjang 2020 tercatat 12 bencana banjir dan 1 kekeringan. Tujuan dari penelitian ini adalah menganalisis ambang batas banjir dan tren frekuensi kejadian banjir Kali Mriwong. Metode yang dipakai adalah analisis persentil dan analisis tren debit. Data yang digunakan adalah debit Kali Mriwong tahun 2014-2020. Hasil Penelitian menunjukkan ambang batas banjir yang sesuai untuk Kali Mriwong adalah Q95. Kemudian pada frekuensi kejadian banjir terdeteksi adanya tren meningkat pada bulan Maret dan tren menurun pada bulan April. Kenaikan dan penurunan frekuensi kejadian banjir pada bulan berurutan menjadi indikasi awal pergeseran musim hujan. Oleh karena itu, penanggulangan banjir Kabupaten Ponorogo perlu mempertimbangkan penelitian yang lebih komprehensif tentang hujan. Pengembangan sistem peringatan dini dalam penanggulangan banjir Kabupaten Ponorogo perlu menganalisis ambang batas banjir di stasiun pantau debit lainnya (Cokromenggalan, Wilangan, Gendol, Ngebel, Kedung Celeng, Watu Putih, Galok dan Sungkur). Saran untuk penelitian selanjutnya, perlu dicoba jenis persamaan lainnya dalam menganalisis R2 untuk menemukan model persamaan yang paling mewakili tren frekuensi banjir Kabupaten Ponorogo.Abstract. Sustainable development adheres to the principle of intergenerational justice. Floods are the most destructive global disasters on a geographical scale. Land use changes and increasing population growth result in the distrution of locations for storing water. Land use changes contribute to the increasing flood disaster. The human population living in flood-prone areas feels the impact of increasingly severe material and health losses. Pulung District is an area with high rainfall in Ponorogo Regency, East Java, Indonesia. Mriwong utilized for irrigation. The development of agriculture in the catchment area of Mriwong River affects the discharge continuity. Throughout 2020, 12 flood disasters and 1 drought were recorded. The intent of this research is to analyze the flood threshold and trend analysis of Mriwong River Flood Frequency. The methods used are percentile analysis and trend analysis. The data utilized are Mriwong River discharges 2014 to 2020. The research results show that the appropriate flood threshold for Mriwong River is Q95. Then, an increasing trend of flood frequency was detected in March, and a decreasing trend occurred in April. The increase and decrease of flood frequency trends is an early indication of rainy season change. Therefore, flood management in Ponorogo Regency needs to consider comprehensive research on rainfall. The flood early warning system management in Ponorogo Regency required analyzing the flood threshold at other discharge monitoring stations (Cokromenggalan, Wilangan, Gendol, Ngebel, Kedung Celeng, Watu Putih, Galok, and Sungkur). Suggestions for further research: It is necessary to try other types of equations in analyzing R2 to find the best equation model that represents the trend of flood frequency in Ponorogo Regency. Submitted: 2024-11-28 Revisions:  2025-03-12 Accepted: 2025-06-20  Published: 2025-08-08   
EDUKASI HUKUM DALAM PENGELOLAAN IRIGASI PADA DAERAH DENGAN ALIH FUNGSI LAHAN PERTANIAN TINGGI Werdiningtyas, Ratri; Rosari, Bertania Kartikaning Tiyas; Hadiani, Rintis; Wahyudi, Agus Hari; As'ad, Sholihin; Setiono, Setiono; Solichin, Solichin; Hapsari, Shabrina
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 8, No 3 (2025): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v8i3.60031

Abstract

The issue of agricultural land conversion has become an increasingly pressing concern in Indonesia. Mixing land use for residential and agricultural purposes causes clogged irrigation canals due to trash dumping and sedimentation, affecting water flow and increasing pollution hazards. Impaired irrigation reduces agricultural productivity, leading to land conversion. This results in a cycle of malfunction in irrigation networks and land use. Law No. 17 of 2019 and Government Regulation No. 77 of 2001 emphasize farmers' major involvement in irrigation water management, yet many are unaware of their rights and obligations. One of the major challenges faced by farmers is the lack of knowledge about their rights and responsibilities as agricultural land managers in irrigated areas. The community service program intends to teach farmers in the Bengawan Solo Irrigation Area about their roles in irrigation management and spatial planning, thereby improving their legal knowledge and equipping them to effectively monitor their access to irrigation. The target participants for legal education on irrigation network management and spatial planning are farmers in the Bengawan Solo Irrigation Area, Jaten Subdistrict, Karanganyar Regency, Central Java. A half-day socialization and interactive workshop was held at the Jaten District Office, attended by 39 people consisting of 14 farmers, 17 P3A management personnel, and 6 village officials. The interactive sessions showed that farmers who do not know how to defend their irrigation management rights tend to shift to more economically profitable land uses, which disrupts irrigation networks and water reliability.Isu konversi lahan pertanian menjadi perhatian yang semakin mendesak di Indonesia. Bercampurnya penggunaan lahan untuk perumahan permukiman dan pertanian menyebabkan tersumbat di saluran irigasi karena pembuangan sampah dan sedimentasi, mempengaruhi aliran air dan peningkatan polusi air. Hal ini mengakibatkan siklus kerusakan pada jaringan irigasi dan penggunaan lahan. Turunnya produktifitas pertanian sebagai akibatnya menyebabkan maraknya fenomena konversi lahan pertanian menjadi perumahan permukiman. Undang-Undang No. 17 Tahun 2019 dan Peraturan Pemerintah No. 77 Tahun 2001 menekankan keterlibatan besar petani dalam pengelolaan air irigasi, namun banyak petani yang tidak menyadari hak dan kewajiban mereka. Sehingga salah satu tantangan utama yang dihadapi adalah kurangnya pengetahuan tentang hak dan tanggung jawab petnai sebagai pengelola lahan pertanian di daerah irigasi. Program pengabdian masyarakat ini bermaksud untuk mengedukasi petani di daerah irigasi yang banyak terkonversi lahannya tentang hak, kewajiban dan peran mereka dalam pengelolaan irigasi dan penataan ruang, sehingga meningkatkan pengetahuan hukum mereka dan membekali mereka untuk menjaga akses irigasi sebagai haknya. Target peserta edukasi hukum pengelolaan jaringan irigasi dan penataan ruang adalah petani di daerah irigasi Bengawan Solo, Kecamatan Jaten, Kabupaten Karanganyar, Jawa Tengah. Sosialisasi dan workshop interaktif setengah hari dilakukan di Balai Desa Jaten, Kecamatan Jaten yang dihadiri 39 orang yang terdiri dari 14 petani, 17 anggota/pengurus P3A, dan 6 pejabat desa. Dari sesi interaktif menunjukkan bahwa petani yang tidak tahu cara untuk membela hak pengelolaan irigasi mereka cenderung beralih ke penggunaan lahan yang lebih menguntungkan secara ekonomi, yang mengganggu jaringan irigasi dan keandalan air
OPTIMASI DISTRIBUSI AIR IRIGASI MELALUI SISTEM GOLONGAN (STUDI KASUS DAERAH IRIGASI RONGKONG SELUAS 27.000 HA) Rifai, Muji; Wahyudi, Agus Hari
Jurnal Riset Rekayasa Sipil Vol 8, No 1 (2024): September 2024
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v8i1.95315

Abstract

The utilization of river water to support activities in the agricultural sector includes constructing water structures that function to channel or supply water to rice fields through weirs. The water required for rice fields is referred to as irrigation water demand. The amount of water needed in irrigated areas varies, necessitating a water distribution management system, one of which involves creating a crop planting schedule with a technical/rotational system, ensuring the water balance of an irrigation area is well managed. The aim of this research is to achieve the most efficient planting and water distribution plan for an irrigation area, considering the water balance as an indicator of the water management system in fulfilling irrigation water needs. The method used involves comparing the water balance of irrigation areas where water is supplied using a rotational system versus without. The research results show that the appropriate cropping pattern for an irrigation area of more than 25,000 hectares (ha) is to use a rotational system. For the Rongkong Irrigation Area (DI) with a size of 27,947 ha, it is divided into two groups: Group 1 includes: Rongkong Right Irrigation Area with 4,198.38 ha and Rongkong Left Irrigation Area with 6,497.56 ha; Group 2 includes: Rongkong Right Irrigation Area with 7,501.22 ha and Rongkong Left Irrigation Area with 9,749.22 ha. Before using the rotational system, a water deficit occurred in the first week of October, amounting to 0.22 m³/second. However, after implementing the rotational system, the water balance in the Rongkong Irrigation Area no longer showed any water demand deficit.
ANALISIS PEMENUHAN AIR BERSIH DI DAERAH CEKUNGAN AIR TANAH Rifai, Muji; Wahyudi, Agus Hari; Ywangtini, Hendriana
Jurnal Riset Rekayasa Sipil Vol 9, No 1 (2025): September 2025
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v9i1.109778

Abstract

Population and economic growth have significantly increased human demand for clean water, both in terms of quantity and quality. One way to meet this growing demand is through the extraction of groundwater. This study aims to analyze the fulfilment of clean water needs in the city of Salatiga, which is located within the Rawapening and Salatiga Groundwater Basins. The study emphasizes the importance of sustainable water resource management to ensure future water availability. Using a qualitative descriptive approach, the research was conducted through literature review, field surveys, geoelectrical measurements, hydrological analysis, and the development of a water balance assessment. The results indicate that the available groundwater potential is approximately 5 m³/second, while current utilization is only around 0.069 m³/second. Analysis of domestic and non-domestic water demand reveals an increasing trend through 2028 in line with population growth. The water balance analysis shows seasonal fluctuations, with both surplus and deficit periods. A water deficit occurs during eight months (May to December), with the highest shortfall recorded in October (397 liters/second) and the lowest in May (23 liters/second). To address this shortfall, groundwater resources are proposed as an alternative solution. Given Salatiga's location within a groundwater basin, the city possesses considerable groundwater potential. This presents an opportunity for clean water provision through the development of deep wells, guided by the recommendations from geoelectrical surveys (both in terms of location and potential), to ensure optimal water yield for meeting clean water demands.
Co-Authors Addina, Amri Irsyad Adhi Susilo Angga Safrida, Muhammad Fajar Angga Safrida, Muhammad Fajar Anggraini, Ellyta Ardiansyah, Rahman Hakim Ariansyah, Gathot Bayu Arini, Vika As'ad, Sholihin Astried, Deandra Dewayanti, Farida Ayu Fuad Muhammad Hadiani, Rr. Rintis Hapsari, Shabrina Irawan, Fredi Kesuma, Raras Phusty Mahadika, Bagas Mamok Suprapto Muji Rifai, Muji Muttaqien, Adi Yusuf Muttaqien, Adi Yusuf Pambayun, Mahendra Ken Pradana, Anggara Apriyan Rahmani, Rosadana Nurir Rosari, Bertania Kartikaning Tiyas Setiono Setiono Simanjuntak, Orien Kalam Siti Qomariyah Sobriyah Sobriyah Solichin Solichin Suncaka, Bintang Suyanto Suyanto Tias Pratomo, Muhamad Iqbal Tinawati, Tinawati Vania, Rn Claresta Werdiningtyas, Ratri Wibowo, Andre Yosanurahman, Arfan Yuliana, Ika Yunanto, Idham Ywangtini, Hendriana