BAB IV ANALISIS HIDROLOGIIV.1 Anali

BAB IV ANALISIS HIDROLOGI

IV.1 Analisis Hidrologi
Tujuan analisis hidrologi adalah untuk memperkirakan debit andalan atau ketersediaan air di sungai dan debit banjir di Sungai Urang. Daerah studi yang ditinjau mencakup aliran sungai di lokasi Pagerpelah yang termasuk ke dalam Daerah Aliran Sungai (DAS) Urang. DAS Urang berada di pegunungan bagian tengah Jawa Tengah di sebelah Barat dataran tinggi Dieng. Keseluruhan DAS Urang berada dalam wilayah kabupaten Banjarnegara, Propinsi Jawa Tengah.
Sungai Urang berhulu di Gunung Slamet (± 1.849 m) dan Raga Tembang (± 2.174 m) mengalir dengan arah utara-selatan. Anak-anak Sungai utama Urang adalah Kali Rawa/Sasak, Sungai Cantiah dan Sungai Telatasuren. Di hilir lokasi studi, Sungai Urang bergabung dengan Sungai Merawu yang hilirnya bergabung dengan Sungai Serayu. Sungai ini kemudian memasuki Waduk Bendungan Mrica (P.B. Soedirman) dan akhimya bermuara ke Samudera Indonesia di teluk Penyu, dekat kota Cilacap. DAS Sungai Urang di bagian hulu diselimuti oleh hutan, sedangkan bagian hilirnya adalah perkebunan, tegalan, ladang dan sawah. Banyak dusun/desa yang terdapat di sepanjang Sungai Urang.
Lokasi pekerjaan berjarak ± 23 km dari kota Banjarnegara ke arah utara melalui Kecamatan Banjarmangu menuju Desa Pagerpelah Kecamatan Karangkobar. Sumber air PLTM Pagerpelah berasal dari sungai Urang, lokasi ini terletak di Sungai Urang kira-kira 3 (tiga) kilometer dari pertemuan Sungai Urang dan Sungai Merawu, letaknya dekat jembatan Sungai Urang pada jalan raya yang menghubungkan kecamatan Karangkobar dan kecamatan Banjarmangu. Secara administratif daerah ini termasuk kedalam Kabupaten Banjarnegara, Propinsi Jawa Tengah.
DAS Urang di lokasi PLTM Pagerpelah memiliki luas wilayah sebesar 50,79 km2, ketinggian di lokasi ini adalah ± 800 m diatas permukaan laut. Panjang sungai utama mulai dari hulu sampai lokasi studi kurang lebih 13,35 km. Topografi DAS Urang bergunung-gunung dan berbukit-bukit dengan kemiringan lereng yang cukup besar.
Daerah studi mempunyai karakteristik hidrologi yang dicirikan oleh musim kemarau yang berlangsung dari Mei sampai September dan musim hujan yang berlangsung dari Oktober sampai April. Puncak musim hujan terjadi di bulan Januari-Desember, sedangkan musim kemarau di bulan Agustus. Kondisi DAS Urang tidak terlalu bagus karena bagian hulu Sungai Urang hanya sebagian kecil ditutupi hutan.

結果 (英文) 1:

CHAPTER IV ANALYSIS of HYDROLOGY

IV. 1 Analysis of hydrology hydrology analysis Purposes was
to estimate water availability or mainstay discharge in rivers and flood discharge in River Urang. The study reviewed include the flow of the River at the site of the Pagerpelah included in the river basin (DAS) Urang. DAS Urang is located in the central mountains of Central Java in the West of Dieng plateau. The overall DAS Urang is in the Banjarnegara district, Central Java province.
Urang River originates at Mount Slamet (1.849 m ±) and Raga Song (2.174 m ±) flows with a North-South direction. The main tributaries are the Urang Times Bog/Cantiah and River, And the river Telatasuren. At the downstream location study, the river is joined by the river Urang Merawu hilirnya join the River Musi. The River then enters the Reservoir Dam Mrica (P.B. Soedirman) and end empties into The Bay of Turtles in Indonesia, near the town of Cilacap. Urang River WATERSHED in the upper reaches covered by forests, while the hilirnya are plantations, moorland, fields and rice paddies. Many hamlets/villages located along the river Urang is a work Location.
± 23 km from the town of Banjarnegara northward through the Town towards the village of Pagerpelah district of Banjarmangu Karangkobar. Source of water comes from the river Pagerpelah PLTM Urang, this location is on the river Urang approximately three (3) kilometers from the confluence of the Merawu River, and the Urang Urang River Bridge is near the highway that connects the town and district of Banjarmangu Karangkobar. Administratively the area belongs to the District of Banjarnegara, Central Java province.
DAS Urang Pagerpelah PLTM location has an area of 50,79 km2, elevation at the site is approximately 800 m above sea level. The main river length ranging from hulu to study more or less location 13,35 km. WATERSHED topography of the hilly and mountainous with Urang slope slope big enough.
Area Studies have hydrological characteristic typified by the dry season which lasts from May to September and wet season which lasts from October to April. The peak of the rainy season occurs in the months January-December, while the dry season in August. WATERSHED conditions not too good because Urang part Urang River covered only a small portion of the forest.

結果 (英文) 2:

CHAPTER IV ANALYSIS OF HYDROLOGY Hydrological Analysis IV.1 The purpose of the analysis is to estimate the hydrological discharge mainstay or the availability of water in the river and flood discharge in river Urang. Regional studies that are reviewed include Pagerpelah stream at locations that fall within the Watershed (DAS) Urang. Urang watershed located in the mountains of the central part of Central Java in the west of Dieng Plateau. Overall Urang watershed are in Banjarnegara district, Central Java Province. Urang River headwaters in Mount Slamet (± 1,849 m) and Body tembang (± 2,174 m) flowing north-south direction. Children are Urang main river Kali Swamp / Sasak, Cantiah River and River Telatasuren. Downstream of the study area, the river joins the River Merawu Urang the downstream join Serayu River. The river then enters the Reservoir Dam Mrica (PB Sudirman), and finally empties into the Indonesian Ocean in Turtle bay, near the town of Cilacap. Urang River watershed upstream covered by forests, while the downstream portion is plantation, dry land, and paddy fields. Many hamlets / villages located along the river Urang. Locations job is ± 23 km from the city Banjarnegara north through the District Rural Pagerpelah Banjarmangu toward the District Karangkobar. Pagerpelah micro power source of water comes from the river Urang, this location is located in the River Urang approximately three (3) miles from the confluence of the River Urang and Merawu, located near Urang River bridge on the highway that connects the districts and sub-districts Karangkobar Banjarmangu. Administratively, the area is included in Banjarnegara district, Central Java Province. watershed Urang micro power Pagerpelah site has an area of 50.79 km2, altitude at this location is ± 800 m above sea level. The length of the main river from upstream to the study area of approximately 13.35 miles. Urang watershed topography is mountainous and hilly with a large enough slope. regional hydrological studies have characteristics which are characterized by a dry season that lasts from May to September and the rainy season which lasts from October to April. The peak of the rainy season occurs in the months from January to December, while the dry season in August. Urang watershed conditions are not too good because the upper reaches of the River Urang covered only a small part of the forest.