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Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian
Published by Universitas Negeri Semarang
ISSN : 25493078     EISSN : 25493094     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian welcomes high-quality, original and well-written manuscripts on any of the following topics: 1. Geomorphology 2. Climatology 3. Biogeography 4. Soils Geography 5. Population Geography 6. Behavioral Geography 7. Economic Geography 8. Political Geography 9. Historical Geography 10. Geographic Information Systems 11. Cartography 12. Quantification Methods in Geography 13. Remote Sensing 14. Regional development and planning 15. Disaster
Arjuna Subject : -
Articles 555 Documents
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Anomali Perubahan Muka Air Tanah di Daerah Urban Nugroho, Nandra Eko
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.17107

Abstract

Dusun Karangwuni dan Dusun Kumpulrejo, Desa Caturtunggal, Kecamatan Depok, Kabupaten Sleman, DIY memiliki anomali penurunan muka airtanah yang dapat menjadi gambaran tingkat eksploitasi yang dilakukan baik oleh masyarakat melalui sumur gali ataupun dunia usaha seperti hotel, apartemen dan mall. Pengambilan airtanah melalui sumur-sumur akan mengakibatkan terjadinya lengkung penurunan muka airtanah (depression cone). Semakin besar laju pengambilan air tanah, semakin curam lengkung penurunan permukaan airtanah yang terjadi di sekitar sumur yang dipompa sampai tercapai keseimbangan baru, jika terjadi pengisian dari daerah resapan. Oleh karena itu prinsip efisiensi air perlu dilaksanakan dengan memanfaatkan air permukaan dan air tanah secara terpadu. Data muka airtanah didapatkan dengan menggunakan pengukuran sumur gali yang diperoleh dari 21 titik sumur di lapangan. Penggambaran peta muka air tanah dangkal dilakukan menggunakan software ArcGIS. Penggambaran kontur muka air tanah dibuat menggunakan software Surfer. Anomali perubahan muka airtanah di Dusun Karangwuni dan Dusun Kumpulrejo, Desa Caturtunggal, Kecamatan Depok, Kabupaten Sleman, Yogyakarta dihasilkan dari analisis perbandingan antara kontur muka air tanah normal dengan muka air tanah yang telah mengalami penurunan. Dari Hasil analisis tersebut ditemukan lengkung penurunan muka airtanah (depression cone) yang sangat jelas. Nilai kedalaman yang sebelumnya berkisar antara 5 – 6 meter turun menjadi 9 – 11 meter membentuk lengkungan yang semakin curam. Penurunan itu tersebar di hampir semua bangunan kos, bangunan hotel dan apartemen.AbstractKarangwuni Backwoods and Kumpulrejo Backwoods, Caturtunggal Village, Depok District, Sleman Regency, Yogyakarta Special Region have anomalous groundwater decrease that can be the reflection of exploitation conducted by the community through dug wells or business sector such as hotels, apartments and malls. Groundwater retrieval through wells will bring about the formation of groundwater depression cone. The greater the rate of groundwater retrieval, the steeper the curvature of the groundwater depression cone occurs around the well being pumped until a new equilibrium is reached, in case of suplied from the recharge area. Therefore the principle of water efficiency utilization needs to be implemented. Groundwater level data is obtained from 21 dug wells in the field. A shallow groundwater depiction is drawn using ArcGIS software. The distribution of groundwater contours is created using Surfer software. The anomaly of groundwater decrease in Karangwuni and Kumpulrejo Backwoods, Caturtunggal Village, Depok District, Sleman Regency, Yogyakarta is resulted from comparative analysis between the normal groundwater contour and the decreased groundwater level. From the results of the analysis, there is a very obvious curve of groundwater depression cone. The previous depth value ranges from 5 to 6 meters dropped to 9 - 11 meters forming a steeper curve. The decline was spread across all hotels and apartments.
Strategi Pengelolaan Kekeringan Masyarakat Sub DAS Bompon di Lereng Kaki Vulkanik Pegunungan Sumbing Hanafi, Fahrudin; Juhadi, Juhadi; Iryanthony, Sigit Bayhu; Hakeem, Awanda Rais; Rahmadewi, Dinda Putri; Fitriyani, Fitriyani
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.10896

Abstract

Sub DAS Bompon merupakan daerah yang memiliki permasalahan bencana tergolong kompleks. Dilihat dari morfologinya yang terdiri dari lereng-lereng menjadikan daerah tersebut rawan longsor dan kekeringan terutama bagi penduduk yang tinggal dibagian igir-igir Sub DAS Bompon. Selain adanya dampak negatif, longsor juga memberikan dampak positif terkait dengan ketersediaan sumber daya air alami yakni mata air. Pada penelitian ini, kajian dilakukan pada setiap morfologi Sub DAS. Dari hasil observasi lapangan menunjukkan bahwa penduduk di bagian lereng atas dan lereng bawah perbukitan sebagian besar lebih memilih memanfaatkan mata air untuk kegiatan domestik. Sedangkan di bagian kaki lereng perbukitan, mata air lebih dimanfaatkan untuk kegiatan pertanian dan sebagian besar penduduk sudah menggunakan sumur dan PAM. Penelitian ini bertujuan untuk mengidentifikasi persebaran mata air dan air tanah serta menganalisis cara-cara pengelolaan penduduk dalam memanfaatkan sumber daya air dari mata air dan sumur. Dalam memanfaatkan dan mempertahankan kualitas mata air, penduduk melakukan strategi seperti membuat kolam tampungan, menancapkan bambu di pinggir tampungan mata air, membangun sumur pribadi maupun komunal, hingga mencari mata air di luar Sub DAS Bompon, dan lain-lain.Sub DAS Bompon is an area that has a complex disaster problem. Judging from the morphology that consists of slopes make the area prone to landslides and drought, especially for residents who live in the apex of Sub Basin Bompon. In addition to the negative impacts, landslides also provide a positive impact associated with the availability of natural water resources,  springs. In this study, the study was conducted on each sub-basin’s morphology. Field observations show that the population on the upper slopes and the slopes below the hills mostly prefer to use the spring for domestic activities. While at the foot of the slopes (toe), springs are more used for agricultural activities and most of the people are already using wells and PAM. This study aims to identify spread of the springs and analyze ways of managing the population in utilizing water resources from the spring. In utilizing and maintaining the quality of springs, residents to do strategies such as creating a pool of shelters, bamboo sticking on the edge of the pool, to find springs outside the Bompon River Basin, and others.
Identifikasi Potensi dan Permasalahan Lahan untuk Arahan Manajemen Lahan (Studi Kasus Penggal Sungai Cemoro Sebagian Kawasan Situs Sangiran) Prabaningrum, Irfani; Mardiana, Aida; Gumilar, Artha; Risky, Awanda Sistia; Wiratama, Herjuna; Visanto Putro, Hendrikus Rizky; Amalia, Rizka Dwi; Ningrum, Sri Kumala
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 2 (2019): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i2.20885

Abstract

Kawasan Situs Sangiran yang telah ditetapkan sebagai situs warisan dunia diharapkan mampu melestarikan jasa ekosistem berupa jasa kultural yang terdapat di kawasan tersebut mengingat banyaknya penemuan fosil dan artefak berharga lainnya. Kawasan Situs Sangiran juga memiliki jasa penyediaan berupa sumberdaya lahan untuk memenuhi kebutuhan hidup masyarakat di sekitarnya. Lahan yang dilindungi secara kultural dan dimanfaatkan oleh masyarakat memerlukan adanya evaluasi lahan untuk mengetahui potensi dan permasalahannya. Penelitian ini bertujuan untuk mengidentifikasi potensi dan permasalahan lahan yang terdapat di Kawasan Situs Sangiran. Metode yang digunakan dalam penelitian ini adalah evaluasi lahan menggunakan Indeks Potensi Lahan (IPL) berbasis bentuklahan yang dikaji dari sudut pandang geografi. Hasil penelitian menunjukkan bahwa terdapat tiga klasifikasi potensi lahan, yaitu kelas potensi rendah 67.09% atau 13,5 km2, kelas sedang 32% atau 6,52 km2, dan kelas sangat rendah 1% atau 0.11 km2. Guna meningkatkan potensi lahan maka terdapat beberapa arahan manajemen lahan seperti optimalisasi tanaman buah dan perancangan tur wisata edukasi. Sementara untuk mengatasi permasalahannya dilakukan manajemen konservasi lahan dengan menggunakan metode vegetatif maupun mekanik.
Investigating the Role of Rainfall Variability on the Hydrological Response of Small Tropical Upland Watershed Christanto, Nugroho; Sartohadi, Junun; Setiawan, Anggri; Hadi, M Pramono; Jetten, Victor; Shrestha, Dhruba Phika
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.9879

Abstract

Excessive soil losses found in many upper basins in Java which causing severe problem in the lowland areas due to extreme hydrological response. The objective of this research is to study the role of rainfall variability (spatial variability, intensity and duration) on the hydrological response of small tropical upland watershed. To run and test this scenario, a watershed with a good weather dataset and experience soil loss problem was selected. Therefore, Bompon Watershed were selected to perform the model. In order to investigate the hydrological response of different rainfall variability, LISEM was sed. Three scenarios of comparison were designed: different rainfall interpolation, different direction of rainfall movement, high intensity-short duration and low intensity-long duration rain. Initial moisture content (thetai) was found as the most sensitive variable for all indicators when all input variables value increased. When the input variables values decreased, thetai was found as the most sensitive variable for changing in total discharge, whereas saturated hydraulic conductivity (Ksat) was the most sensitive variable for changing in peak of discharge.
Analisis Tingkat Pencemaran Air Laut di Pesisir Pulau Pari, Kec. Kepulauan Seribu Selatan, Kab. Kepulauan Seribu, DKI Jakarta Fadyah, Almira; Danisworo, Conradus; Yogafanny, Ekha
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 2 (2019): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i2.20781

Abstract

Pulau Pari merupakan salah satu pulau di Kepulauan Seribu yang menjadi tempat kawasan wisata, kawasan penelitian dan kawasan konservasi mangrove. Kondisi perairan di sekitar Pulau Pari saat ini cukup memprihatinkan, dimana sampah, limbah dan tumpahan minyak ditemukan di sekitar Pulau Pari. Ditemukan juga saluran pembuangan limbah rumah tangga yang dialirkan ke laut tanpa adanya pengolahan terlebih dahulu dan ditemukan limbah minyak dari kegiatan pelayaran. Penelitian ini bertujuan untuk mengkaji tingkat pencemaran air laut di sekitar Pulau Pari berdasarkan Indeks pencemaran air laut dan mengetahui faktor yang berpengaruh terhadap nilai indeks pencemaran air laut dari segi internal dan eksternal di Pulau Pari. Metode yang digunakan dalam penelitian ini adalah metode survei, metode indeks pencemaran, metode statistik dan analisis data. Pengambilan sampel air laut menggunakan Teknik Purposive Sampling, dengan 7 titik lokasi sampling. Hasil laboratorium sampel air laut digunakan untuk menghitung indeks pencemaran dengan parameter TSS, BOD, Kekeruhan, pH, deterjen, minyak dan lemak. Perhitungan statistika regresi linier untuk mengetahui faktor lingkungan yang paling mempengaruhi nilai indeks pencemaran meliputi gelombang, pasang surut dan arus laut. Hasil penelitian menunjukkan sebagian besar perairan laut sekitar Pulau Pari memiliki tingkat pencemaran tercemar sedang. Faktor dari segi internal adalah limbah domestik yang mengalir langsung ke laut tanpa adanya pengolahan karena tidak adanya IPAL. Dari faktor lingkungan, faktor surut terendah yang paling mempengaruhi nilai indeks pencemaran.Pari Island is one of the islands in Kepulauan Seribu, which famous as tourism spot, research and mangrove conservation area. The Current condition of sea water around Pari Island is quite concerning, garbage, domestic waste and oil spills are found around Pari Island. The sewerage channels from domestic waste water directly flowed into the sea without any treatment and oil waste from shipping activities are also founded. This research aims to examine the level of sea water pollution in Pari Island based on the sea water pollution index and to find out what internal and external factors that affect the pollution index level. The method used in this research were survey method, pollution index method, statistical method and data analysis. Seawater sample was determined using the Purposive Sampling Technique, resulted 7 points sampling locations. The laboratory result of sea water were used to calculate pollution index with parameter of seawater quality i.e. TSS, BOD, Turbidity, pH, detergent, oils and fats. Linear regression was used to analyze the factors that most affect the pollution index. The result shows that; based on pollution index most of the sea waters in surrounding of Pari Island were moderately polluted. From internal factor, domestic waste water that flowed directly into the sea without any treatment was the main source of pollution. The most influential factor contributes to pollution index value is the low tides, rather than wave and current velocity.
Analisa Kapasitas Sungai Kaliyasa Cilacap Budiyanto, Muchamad Arif; Amri, Choiri
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.9746

Abstract

Kaliyasa merupakan sungai buatan yang berada pada bentuk lahan asal marine yang terletak di Kabupaten Cilacap. Kondisi sungai dipengaruhi oleh adanya Intrusi air asin yang masuk dari bagian Hilir yaitu dari Sentolo Kawat dan juga dari daerah Tempat Pelelangan Ikan,  kemudian juga tidak kalah pentingnya dari bagian hulu yang masuk melalui Muara Kali Sabuk yang kemudian masuk ke Kaliyasa. Untuk menghindari banjir yang sering terjadi, perlu direncanakan pengendalian banjir dengan mengetahui kapasitas penampang eksisting Kaliyasa sehingga dapat mengurangi kerugian. Selain kapasitas sungai diperlukan juga untuk mengetahui kedalaman minimum untuk memperlancar lalu lintas pelayaran nelayan. Dengan melakukan simulasi menggunakan HEC-RAS dapat ketahui kapasitas penampang Kaliyasa. Dari hasil simulasi kondisi eksisting dengan banjir kala ulang banjir tertentu beberapa lokasi mengalami banjir sehingga perlu penanganan tanggul banjir. Namun dari penampang pemanjang tersebut terdapat penumpukan sedimen di hilir yang mengganggu aliran air untuk keluar dari sungai, dan pengedapan tersebut menggangu alur lalu lintas kapal pada ruas sungai tersebut. Maka dalam perencanaan Kaliyasa dilakukan pengerukan (normalisasi) yang akan mengembalikan alur sungai dan alur navigasi kapal.Kaliyasa is an artificial river that is in the form of land of marine origin located in Cilacap Regency. River conditions are affected by the presence of saltwater intrusion coming from the lower reaches, from Sentolo Kawat and the Fish Auction Area. To avoid frequent flooding, it is necessary to plan flood control by knowing Kaliyasa’s existing cross-sectional capacity so that it can reduce losses. In addition to the capacity of the river, it is also necessary to know the minimum depth to facilitate the fishermen’s shipping traffic. By simulating using HEC-RAS, we can know the Kaliyasa cross-sectional capacity. From the results of the simulation of the existing conditions with certain floods in certain floods, several locations experienced flooding, so it was necessary to handle the flood dike. However, from the longitudinal cross section there is a buildup of sediment in the downstream which disrupts the flow of water to get out of the river, and the sediment disturbs the flow of ship traffic on the river segment. So in the Kaliyasa planning dredging (normalization) will be carried out which will restore the river flow and the navigation path of the ship.
Spatial Planning and Community Involvement of Ecovillage Settlements in Tibang Village, Banda Aceh City Fahrizal, Fahrizal; Yuliastuti, Nany
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 2 (2019): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i2.21607

Abstract

One of the handling strategies towards achieving the SDG Agenda is the 11th goal at the moment, namely environmentally sound development. Tibang, as a residential area in the city of Banda Aceh, has implemented a program from the city government that leads to environmentally sound settlements by applying the eco-village concept. This step has received support from the government in the form of policies and the existence of community institutions that care about the environment but have not been implemented optimally. Based on the problem in this study, how is the assessment of residential and residential areas in Tibang Village an embodiment of environmentally friendly villages? This study aims to assess the factors that influence housing and settlement areas in realizing the concept of the eco-village in Tibang Village. The method used is descriptive quantitative method with factor analysis, which has 82 respondents. By analyzing using the method of assessment and weighting analysis, the results obtained indicate that Tibang settlements need to be improved, especially in maintaining the preservation and environmental quality that can be realized through space utilization and community involvement in environmental preservation. Recommendations addressed to the community to increase the utilization of residential space efficiently and optimize the role of community groups concerned with the environment by embracing all levels of society and participating in realizing the eco-village concept.
Analisis Pengaruh Pengelolaan Lingkungan terhadap Kondisi Masyarakat Hilir Sungai Musi Putri, Mega Kusuma; Septinar, Helfa; Daulay, Ratna Wulandari
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 2 (2019): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i2.18955

Abstract

Tujuan dari penelitian ini adalah untuk melihat kondisi masyarakat hilir Sungai Musi Kecamatan Gandus, Kota  Palembang terkait aspek lingkungan, fisik sosial ekonomi masyarakat dan pengaruh kebijakan pengelolaan lingkungan. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan analisis deskriptif-empirik. Tahap penelitian pada penelitian ini dibagi menjadi empat tahap yaitu tahap persiapan, tahap lapangan, tahap analisis hasil lapangan, dan tahap penulisan laporan.  Teknik pengumpulan data pada penelitian ini, yaitu: observasi, angket, dokumentasi. Tahap analisis data hasil lapangan dibagi menjadi 3 kegiatan utama, yaitu melakukan pengharkatan (scoring) dan pembobotan, kemudian analisis deskriptif empirik dikaitkan dengan kebijakan pemerintah melalui UU No. 32 tahun 2009 tentang pengelolaan lingkungan. Hasil penelitian Tingkatan kondisi masyarkat di Kecamatan Gandus memiliki tingkatan tinggi sebesar 42%, sedang 50%, dan rendah 8%, ditinjau dari aspek lingkungan, fisik, sosial, dan ekonomi. meskipun peraturan dari pemerintah terkait pengelolaan lingkungan sungai telah diterapkan. Pengelolaan lingkungan sungai Musi di Kecamatan Gandus diperlukan suatu penanganan secara intensif, efektif dan berkelanjutan yang berkaitan langsung di lapangan guna meningkatkan kualitas kondisi masyarakat yang ada di sempadan sungai di Kecamatan Gandus kota Palembang.The purpose of this study is to look at the condition of the downstream community of Musi River, Gandus Subdistrict, Palembang City related to environmental aspects, the socio-economic physical community and the influence of environmental management policies. The method used in this study is a quantitative method with descriptive-empirical analysis. The research phase in this study was divided into four stages, namely the preparation phase, the field stage, the stage of the analysis of field results, and the stage of report writing. Data collection techniques in this study, namely: observation, questionnaire, documentation. The data analysis stage of the field results is divided into 3 main activities, namely scoring and weighting, then an empirical descriptive analysis is linked to government policy through Law No. 32 of 2009 concerning environmental management. The results of the study The level of community conditions in the District of Gandus has a high level of 42%, moderate 50%, and low 8%, in terms of environmental, physical, social, and economic aspects. although regulations from the government regarding river management have been implemented. The management of the Musi river environment in the Gandus District requires an intensive, effective and sustainable treatment that is directly related to the field in order to improve the quality of the community conditions that exist in the river border in the Gandus District of Palembang.
Penanggulangan Bencana Banjir Berdasarkan Tingkat Kerentanan dengan Metode Ecodrainage Pada Ekosistem Karst di Dukuh Tungu, Desa Girimulyo, Kecamatan Panggang, Kabupaten Gunungkidul, DIY Santoso, Dian Hudawan
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.17136

Abstract

Dukuh Tungu terletak di Desa Girimulyo, Kecamatan Panggang, Kabupaten Gunungkidul, Propinsi Daerah Istimewa Yogyakarta. Di daerah ini terdapat fenomena bentuk-lahan karst berupa cekungan dan bukit – bukit karst. Daerah cekungan pada RT 07 di Dukuh Tungu sering mengalami banjir ketika intensitas curah hujan di kawasan tersebut tinggi dengan durasi yang lama. Ketika terjadi siklon tropis cempaka pada akhir bulan November tahun 2017, RT 07 pada Dukuh Tungu mengalami banjir terparah selama 4 hari sampai 7 hari. Tujuan dari penelitian ini adalah untuk mengetahui tingkat kerentanan banjir dan arahan pengelolaan banjir dengan metode ecodrainage. Tingkat kerentanan bencana banjir di daerah penelitian ditentukan berdasarkan dari 4 aspek kerentanan yaitu kerentanan lingkungan, fisik, sosial dan ekonomi, dimana setiap aspek kerentanan memiliki parameter tersendiri. Penelitian ini menghasilkan peta tingkat kerentanan banjir. Dimana RT 06, RT 07, RT 08 dan RT 09 seluas 10,7 Ha mempunyai tingkat kerentanan banjir kategori sedang, baik kondisinya tergenang maupun tidak tergenang banjir. Arahan pengelolaan bencana banjir dengan metode ecodrainage dilakukan dengan penerapan kolam retensi, saluran air hujan dengan rorak dan bak pengumpul air hujan dan peninggian lantai rumah warga serta penanaman rumput manila pada halaman rumah.The hamlet of Tungu is located in the village of Girimulyo, sub-district of Panggang,  district of Gunungkidul, Province of Special Region of Yogyakarta. The morphological form of this area is karst with basins and the hills. The basin area oftenly flooded when the intensity of rainfall in this region is high with long duration. When the tropical cyclone cempaka occurred at the end of November 2017, RT 07 of the hamlet of Tungu had the worst flooding in 4 days to 7 days. The purpose of this research is to study the extent of the flood vulnerability and the direction of floodwaters with the ecodrainge system. The vulnerability were based on four aspects i.e. environmental, physical, social and economic vulnerabilities with each aspect of vulnerability. Our research resulted 10,7 Ha of study area has a level of vulnerability to a catastrophic flood, which is RT 06, RT 07, RT 08 and RT 09 that are flooded with floods and floods. The ecodrainage methods was proposed by performing the application of retention pool, rain channel with rorak and rainwater collection and raised up the floor of local people’s houses and plant Manila grass on a yard.
Water Shortage at Several Sub Watershed into Wonogiri DAM Murtiono, Ugro Hari; Wuryanta, Agus
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 2 (2019): July
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i2.20830

Abstract

The study was conducted at several selected sub-watersheds (Temon, Wuryantoro, Alang, and Keduang Sub-watersheds) in Wonogiri District. These four sub-watersheds are main rivers whose outlets flow into Wonogiri Dam. The study calculated the water supply and water demand for various uses at four sub-watersheds. The Thornwaite and Mather method was used to estimate the water supply. The results indicated that: (1) The water supply of Temon Sub-watershed was 35,435,875 m3­­­­­ and the annual water demand was 51,053,247 m3­­­­­, therefore there was a deficit of 30,59 % per year; (2)  The water supply of Wuryantoro Sub-watershed was 17,788,417 m3­­­­­ and the water demand was 22,413,430 m3­­­­­ per year, therefore the deficit was 20.64% per year; (3) The water supply of Alang Sub-watershed  was 31,372,317 m3­­­­­ per year and the water demand was 69,566,500 m3­­­­­ per year, therefore the deficit was 54.90% per year; (4) The water supply of Keduang Sub-watershed was 438,527,889 m3­­­­­ and the water demand was 452,611,219 m3­­­­­ per year, thus, the deficit was 3.11%  per year; (5) those sub-watersheds need improvements especially effective water resources plans, water allocation and distribution based on the determined priority, e.g., retention basin, low evapotranspiration re-vegetation, well-managed infiltration, water resources protection, and water reservoir construction.

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