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Jurnal Teknik Pengairan: Journal of Water Resources Engineering
Published by Universitas Brawijaya
ISSN : 20861761     EISSN : 24776068     DOI : 10.21776
Core Subject : Engineering,
Engineering
Jurnal Teknik Pengairan is a scientific journal published regularly twice per year by Faculty of Engineering, Universitas Brawijaya. The paper submitted in this journal covers the fields of Water Resources Information System, Water Resources Conservation, Water Resources Utilization and Efficiency, Water Structure Engineering Planning and Water Resources Engineering Basic Knowledge. The submitted paper can be a summary of research reports or scientific literature review. The language used in this journal is either English or Indonesian.
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Articles 364 Documents
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Analisa Pola Operasi Embung Joho untuk Pemenuhan Kebutuhan Air Bersih Desa Joho Kecamatan Pace Kabupaten Nganjuk Jawa Timur Isqak, Dediek; Juwono, Pitojo Tri; Suprijanto, Heri
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 2, No 2 (2011)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Air merupakan kebutuhan pokok yang sangat penting untuk memenuhi kelangsungan hidup manusia. Kebutuhan akan air semakin meningkat seiring dengan meningkatnya jumlah penduduk, sedangkan persediaan air di bumi adalah tetap. Salah satu upaya mengatasi masalah tersebut adalah dengan menampung air di embung. Dalam memanfaatkan tampungan embung harus diingat bahwa kuantitas air sungai sangat terbatas, sehingga pemakaian air harus dilakukan sebaik mungkin. Pengaturan pendistribusian air di embung sangat diperlukan dalam menentukan pelepasan yang terencana dan berkesinambungan.Dalam studi ini dilakukan simulasi operasi waduk pada tahun 2011 sampai 2025, simulasi dilakukan dengan menggunakan berbagai keandalan debit inflow yaitu air cukup (26,02%), air normal (50,68%), air rendah (75,34%) dan air kering (90%) serta dengan beberapa keandalan operasi. Metode simulasi yang digunakan mempunyai tujuan untuk mengetahui pola operasi embung. Persamaaan yang digunakan adalah kontiunitas massa aliran yang merupakan hubungan antara masukan (inflow), keluaran (outflow), dan perubahan tampungan embung. Data yang digunakan dalam analisis ini adalah debit inflow, evaporasi, jenis tanah dan kebutuhan yang harus dilayani embung.Dari hasil simulasi operasi Embung Joho dapat diketahui seberapa besar potensi Embung Joho dalam memenuhi kebutuhan air baku domestik, besarnya kemampuan Embung Joho untuk debit dengan keandalan 26,02% = 26.737 jiwa, 50,68% = 20.487 jiwa, 75,34% = 13.087 jiwa dan 90% = 13.887 jiwa.Dari hasil simulasi ini dilakukan analisa pola operasi berdasarkan beberapa kelebihan dan kekurangan dari masing – masing simulasi pola operasi. Dari hasil analisa maka pola operasi yang tepat untuk Embung Joho adalah pola operasi dengan simulasi keandalan debit 90%.Kata Kunci : inflow, outflow, simulasi operasi embung
STUDI PENILAIAN KONDISI DAS DAN IMPLIKASINYA TERHADAP FLUKTUASI DEBIT SUNGAI (STUDI KASUS PADA SUB DAS JANGKOK PULAU LOMBOK) Suhartanto, Ery; Priyantoro, Dwi; Itratip, Itratip
Jurnal Teknik Pengairan Vol 3, No 1 (2012)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

In the last two decade, there has been a dramatically land use changes in the sub-catchment area of Jangkok, Lombok, from forest toward agroforestry. The results of study show that 17.32% of upper stream of Sub-Jangkok due to land use changes from 1995 to 2010 has not been degraded or still good quality catchment indicated by the following variables: coefifient C = 0.16 and potential soil erosion of 6.0 t ha-1 year-1. The C = 0.16 means that the was only 16 % of rainfall undergo run off and the rest of 84% goes to infiltration to enrich ground water. According to the natural erosion in the region which is about 5.75 t/ha/ year, the erosion index was 0.59 or less than 1 classified as low incident. Overall, the land use changes in upper stream of sub-catchment of Jangkok was not significantly correlated to the river-water recharge fluctuation. This was confirmed by the RRC (1.67) and MD (0.21 m3/sec) resulted from 1992-1996. In the next seven years (1997-2003) the RRC and MD were 2.47 and 0.35 m3/sec respectively. In 2004-2010, the RRC and MD were 2.0 and 0.25 m3/sec. However, there were slightly decline of river-water recharge (0.03 m3/sec/year) as well as rainfall (14.64 mm/year) and daily rainfall much as 10 days within the last 10 years.Keywords: land use changes, catchment, runoff, erosion, water recharge.
PENENTUAN NILAI KONDUKTIVITAS HIDROLIK TANAH TIDAK JENUH MENGGUNAKAN UJI RESISTIVITAS DI LABORATORIUM Asmaranto, Runi; Aryani Soemitro, Ria Asih; Anwar, Nadjadji
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 1 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Electrical resistivity can be used to identify geotechnical parameters such as water content, liquid limit, plastic limit and unit weight. It is known that the hydraulic conductivity values can be predicted based on soil properties, so that should be determined through resistivity laboratory test. Some researchers explained that unsaturated soil hydraulic conductivity correlated with soil-water characteristic curve (SWCC), thus the estimated values of hydraulic conductivity using a resistivity test is very important to be developed by observing the behavior of the soil.This study examines changes in hydraulic conductivity of unsaturated soil based on laboratory resistivity test. The results are compared with Gardner (1958) and Campbel (1973) empirical methods. The results show that the unsaturated soil hydraulic conductivity correlates well with the empirical methods used.Keywords: soil-water characteristic curve, hydraulic conductivity, unsaturated soil, suction
Analisa Neraca Air Permukaan Das Renggung Untuk Memenuhi Kebutuhan Air Irigasi Dan Domestik Penduduk Kabupaten Lombok Tengah Zulkipli, Zulkipli; Soetopo, Widandi; Prasetijo, Hari
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Research attempts to understand the potential and demand of water and the water balance, the review on water balance at Watershed Renggung to ensure the satisfaction of the demand of irrigation and domestic waters at Central Lombok District. In this research water potential is 243.34 millions m3 comprising to 22.59 millions m3 river water, 252.51 millions m3 HLD supplement, and 1,309 mm rainfall or equaled to 252.51 millions m3. River water supply is calculated based on 80 % (Q80) dependable discharge from AWLR Renggung- Ponggong in the period from 1992 to 2011. Discharge is used as the guidance to determine water availability at Watershed Renggung. Result of analysis indicates that the maximum discharge is available at 3.658 m3/ second on March. The average debit is 0.721 m3/second, while the minimum discharge is 0.608 m3/second on October. The current water demand for multi-sectors is 225.11 millions m3. These multi-sectors include domestic, irrigation, animal husbandry, fishery and industry. For the industry, the water is supplied only to the industry in the sub-district at the Watershed. The analysis devices for water availability involve the analysis of rainfall and the analysis of surface water.The water demand total at Watershed Renggung for the next 25 years is estimated in the average as 227.58 millions m3. This total figure consists of: 208.40 millions m3 for irrigation water, 7.59 millions m3 for domestic water, 5.40 millions m3 for animal husbandry, 4.90 millions m3 for fishery, and 1.30 millions m3 for industry. The prediction of water demand total from 2011 to 2031 based on Water Demand Index (IKA) Standard of NSAD at NTB Province is 94.75 % in average, meaning that the water use rate is critical. By 2036, IKA is assumed as 101.87 meaning that the water use rate will be deficit.Keywords: water demand, water availability, water balance
Uji Keandalan Penguraian Data Hujan Penguraian (Disagregasi) Untuk Pemodelan Hidrograf Banjir Di Das Kelapa Sawit Hidayah, Entin
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Abstract: This study explores accuracy of short term rainfall disaggregation model by modeling rainfall runoff. Storm hydrographs show rapid responses to rainfall with a short time to peak. The spatial rainfall disaggregation process used multivariate daily rainfall (MuDRain) model on 4 manual rainfall rain gauges (MRR) and 3 automatic rainfall rain gauges (ARR) used as reference the hydrographs were satisfactorily modeled using the Hydrologic Engineering Centre–Hydrologic Modeling System (HEC-HMS). Parameter calibrations were done on case 1 that rainfall runoff modeling used the rainfall data from 7 rain gauges (MRR and ARR). Model validation (case 2) used the rainfall data from 3 rain gauges (ARR). The efficiency indexes of (case 1) and (case 2) are 0.97 and 0.74, respectively. Based on these preliminary findings, it could be suggested that rainfall disaggregation would be able to serve reasonably well in regulating basic hydrological functions.Key words: rainfall, runoff, disaggregation, MuDRain
Studi Sistem Drainase Kali Tutup Barat Kabupaten Gresik Berbasis Konservasi Untuk Penanganan Genangan Ubaidillah, Ubaidillah; Bisri, M.; Ismoyo, M. Janu
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Gresik city growth, accompanied by the increase of population, urbanization and industrial development poses a considerable impact on the hydrological cycle and reduces the absorption region, resulting in flooding. Floodprone area is around market of the city. The issues raised in the field can be analyzed and poses conditions of the existing drainage system of Kali Tutup Barat Gresik as well as the handling based conservation using Bozem and injection wells. The study results found that the drainage system of Kali Tutup Barat Gresik is unable to cope with puddle. Of the available land, the bozem capacity can accommodate puddle discharge of 4.444 m3, while the injection wells at 706,5 m3.Key words: Population density, drainage, bozem, injection wells
Studi Perencanaan Bangunan Pengendalian Akresi Dan Abrasi Di Pantai Tanjungwangi Kabupaten Banyuwangi Hariyoni, Hariyoni; Sisinggih, Dian; Marsudi, Suwanto
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

The Tanjungwangi Beach has a length of 4.52 km has been experiencing with accretion and abrasion in some area due to the dominant wave from northeast direction. Therefore, it is important to take any actions considered as necessary countermeasures to solve the problem of accretion and abrasion. The aim of this study is to understand the distribution of wave direction, the wave with the return period of 25 years H max , H , and the dominance of wave from northeast direction. In term of sediment transport and coastline stability problems, the study location is aiming to find the technical solution. The results indicated that the direction of highest wave comes from the south with rate of 51.505 %, while the highest wave was developed from the northeast direction was 12.596 %. Transported sediment based on data analysis were 13,267.552 m 10 3 /year (abrasion) and 812.239 m /year (accretion). However, the field observation within 10 year period showed that the transport rates are 13,294.955 m 3 /year (abrasion) and 808.018 m 3 3 /year (accretion). Based on the analysis, Tanjungwangi Beach is majorly experiencing with abrasion processes. The revetment structure of natural rock pile was suggested to be set up within the study area.Keywords: Tanjungwangi beach, wave, accretion, abrasion, revetment
Tinjauan Ekohidraulik Pada Uji Model Fisik Bangunan Pelimpah Waduk Pidekso Kabupaten Wonogiri Suprijanto, Heri; Masrevaniah, Aniek; Prasetijo, Hari; Sisinggih, Dian; Primantyo, Andre
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Within this physical hydraulic model of spillway of the Pidekso Dam, the experiment consisted of 9-series of testing; 4-series were testing of narrowing the angle of transition channel by 24 degree while 5others were by 12 degree. For the testing of series No.0 (original design) to No.8, the flow capacity was adequate for various discharges over spillway and outlet structure. Overall, the best hydraulic performance of the model was achieved by series No.4 in term of flow condition (uniformly distributed). This was a model of transition channel with angle of transition of 12 degree and no baffle apron used.Basically, all of testing of the model series No.0 to No.8 brought the positive impact to the downstream-part (section No.36) by considering the dissolved oxygen (DO) level. It was ranging from 11.1 mg/l to 14.2 mg/ l. According to the results of DO level, then only the series No.0 to No.3 were chosen as alternatives design for the case of transition channel with the angle of 24 degree combined with various dimensions of baffle apron. There were regular changes of DO level but the values were still lying above the minimum requirement level and were not harmful for fishery.By respecting to the eco-hydraulic concept, the downstream waterway was designed to be the stone pitching combined with vegetation. It was suggested that the bare floodplain at downstream-part need to be greening by mean of vegetation.Keyword: dam, spillway, baffle apron, dissolved oxygen
Penggunaan Citra Aster Dalam Identifikasi Peruntukan Lahan Pada Sub Das Lesti (Kabupaten Malang) Wibowo, Leo Arbi; Sholichin, Mohammad; Rispiningtati, Rispiningtati; Asmaranto, Runi
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

The indicator impaired balance the hydrologic cycle in watershed was characterized by the number of occurrences of floods, landslides, droughts and pollution of water quality. Lesti sub-watershed was part watershed Brantas contained in the upstream sub-watershed is a priority and having problems against land degradation, erosion and landslides. A lot of effort can be done in order to restore the balance of the hydrological cycle in the watershed so that the quality and quantity of water resources are maintained, one of the efforts that can be done is by way of determination of critical areas which will be used as a reference for determining priority areas for the handling. This effort while increasing productivity, income and socio-economic conditions of the people in the uplands. In determining the criticality of land and conservation directives Lesti sub-watershed, needed some supporting data, one of the most important data is the data of land use. To get land use map in the sub-watershed Lesti, one way that can be used is to perform image interpretation ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) obtained from TERRA satellite. The use of ASTER imagery in the identification of land use is feasible by using sub-system VNIR (Visible and Near-Infrared Radiometer), which has a spatial resolution up to 15 meters above the ground.Key words: Topography map, Watershed, ASTER image, Classification, Land Use Map.
Pengaruh Tanaman Kelapa Sawit Terhadap Keseimbangan Air Hutan (Studi Kasus Sub Das Landak, Das Kapuas) Taufiq, Mohammad; Siswoyo, Hari; WWS, Anggara
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 4, No 1 (2013)
Publisher : Fakultas Teknik, Universitas Brawijaya

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Abstract

Development in the area of Landak Sub watershed, Kapuas watershed that quite rapidly also followed by the shrinking of the existing forest area. Reduction in forest area due to land clearing for oil palm tree which absorbs a lot of surrounding water for its growth affect the water balance in the Landak sub-watershed. The aim of this study was to determine the effect of reduction of river flow discharge due to the planting of oil palm tree. The outline of stages of study includes evapotranspiration calculations with the Penman-Monteith, water availability analysis with NRECA Model, water balance analysis with Thornthwaite and Mather model, as well as estimates of river discharge with FJ Mock Model. Based on the results of the study can be seen that the percentage in discharge reduction due to the planting of oil palm tree ranged from 30% to 40%.Keywords: oil palm, water balance

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