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Study of Fishery Building Capacity in Sutami-Lahor Reservoir
No full textSutami and Lahor reservoirs are man made reservoirs in East Java Province, Indonesia with multiple functions: flood control, irrigation, power plant, tourism and aquaculture. Based on measurement in 2014, the storage volume of Sutami and Lahor reservoirs were approximately 158,600,000 m3 and 29,060,000 m3 respectively. Fishery activities with floating net, trawl, and fishnet separator in Sutami and Lahor reservoirs held by society living nearby the reservoirs. Those activities produce wastes that create higher pollutant load in the reservoirs. Study of fishery load capacity in Sutami and Lahor reservoirs was conducted using chlorophyll-a method and intended to preserve the sustainable benefits of reservoir water resources. Measurement and steps to determine the fishery potential in Sutami reservoir started with the calculation of chlorophyll-a concentration in unit area (mg/m2), calculation of primary productivity through Beveridge Equation, unit value adjustment of result primary productivity with unit value of primary productivity in Beveridge Table, calculation of conversion result from productivity primary value to fish weight, and calculation of fish production based on width of Sutami reservoir. The right system to manage fisheries is sowing fishing with zoning system, which means dividing the territorial waters of the reservoir surface based on their physical and biological to organize the reservoir fisheries pattern based on reservoir priority function. The results showed the average potential of fishery in Sutami reservoir in range of 73.18 - 166.85 tons/year and 10.70 - 16.64 ton/year in Lahor reservoir.
Keywords: Chlorophyll-a, Fishery, Sutami-Lahor Reservoirs, Zoning
Study of Fishery Building Capacity in Sutami-Lahor Reservoir
No full textSutami and Lahor reservoirs are man made reservoirs in East Java Province, Indonesia with multiple functions: flood control, irrigation, power plant, tourism and aquaculture. Based on measurement in 2014, the storage volume of Sutami and Lahor reservoirs were approximately 158,600,000 m3 and 29,060,000 m3 respectively. Fishery activities with floating net, trawl, and fishnet separator in Sutami and Lahor reservoirs held by society living nearby the reservoirs. Those activities produce wastes that create higher pollutant load in the reservoirs. Study of fishery load capacity in Sutami and Lahor reservoirs was conducted using chlorophyll-a method and intended to preserve the sustainable benefits of reservoir water resources. Measurement and steps to determine the fishery potential in Sutami reservoir started with the calculation of chlorophyll-a concentration in unit area (mg/m2), calculation of primary productivity through Beveridge Equation, unit value adjustment of result primary productivity with unit value of primary productivity in Beveridge Table, calculation of conversion result from productivity primary value to fish weight, and calculation of fish production based on width of Sutami reservoir. The right system to manage fisheries is sowing fishing with zoning system, which means dividing the territorial waters of the reservoir surface based on their physical and biological to organize the reservoir fisheries pattern based on reservoir priority function. The results showed the average potential of fishery in Sutami reservoir in range of 73.18 - 166.85 tons/year and 10.70 - 16.64 ton/year in Lahor reservoir.
Keywords: Chlorophyll-a, Fishery, Sutami-Lahor Reservoirs, Zoning
Studi Pendugaan Sisa Usia Guna Waduk Sutami Dengan Pendekatan Sedimentasi
Get PDFSutami Dam is a dam with the largest reservoir with managed by Perum Jasa Tirta I. This reservoir has been operating for more than 39 years (operates in 1972 and using reference to recent data in 2011). This study was performed to determine the trend of sediment discharge and reservoir live time in order to find out how the rest of the remaining Sutami reservoir for reservoir operations. Data analysis is used as the data for 6 years period and in 1972 data for comparison. Point source of sediment in the reservoir is divided into two points, Sutami sediments by direct inflow to the the Sutami Reservoir (Metro River) and outflow from Sengguruh Reservoirs (Brantas River and Lesti River). The third point is the calculation of sediment discharge to determine the most influential point sediment carrier in Sutami Reservoir. Reservoir live time to the rest of Sutami calculated using three methods of approach. Volume approach, elevation approach, and empirical approaches. 2 Tanpa nomer halaman The point that has the most impact is of the Brantas River (inflow from Sengguruh Reservoir) with Qs = 2.27 kg/sec (2011), then from the Metro River with Qs = 1.97 kg/sec (2011). ). Based on the analysis of the remaining life time for Sutami Reservoir using three methods of approach, it is known to Sutami Reservoir live time trends tend to decrease. Elevation control point (+233.3 m) with elevation approach and volume approach gives results for the remaining life of 5 years and 1.5 years, while the empirical approach with 97% trap efficiency give results 9 years for the remaining life time of Sutami Reservoir.
Key words: Sutami Reservoir, Sedimentation, Reservoir Live Tim
Studi Penentuan Batas Pengoperasian Plta Sutami Untuk Operasional Yang Nominal
Get PDFPLTA Sutami sebagai fungsi utama dari pembangunan bendungan Sutami dan merupakan pembangkit listrik yang memanfaatkan potensi waduk Sutami. Selain itu, PLTA Sutami juga berfungsi untuk mengatur debit air yang keluar dari waduk agar dapat memenuhi fungsi waduk lainnya, seperti pengendalian banjir, irigasi, dan air baku. Namun, adanya debit sedimen yang berasal dari sungai Metro pada tahun 2010 sebesar 5,6 kg/dt dan pada tahun 2011 sebesar 1,97 kg/dt dapat mempengaruhi kapasitas tampungan waduk. Kapasitas tampungan waduk akan mengalami penurunan dari tahun ke tahun. Sehingga berdampak pada produksi energi listrik yang dihasilkan PLTA Sutami. Pada penelitian ini dilakukan perhitungan dan analisis menggunakan pola operasi waduk selama 5 tahun, yaitu dari Desember 2010 hingga Nopember 2015 dengan periode bulanan tiap tahunnya. Dari perhitungan ini didapatkan grafik pola operasi waduk Sutami, debit maksimum dan debit minimum sebagai batasan pengoperasian PLTA Sutami, serta energi yang dihasilkan PLTA Sutami tiap tahunnya. Hasil penelitian yang telah dilakukan didapatkan kesimpulan bahwa pola operasi waduk menujukkan waduk Sutami masih dapat memenuhi kebutuhan pembangkitan dan irigasi. Walaupun pada musim kemarau tahun pertama mengalami penurunan volume hingga elevasi 265,76 meter namun masih jauh dari batas elevasi rendah untuk pembangkitan dan irigasi. Pada tahun kedua volume waduk mengalami kenaikan hingga mencapai ketinggian elevasi 272,50 meter. Pada tahun ketiga hingga kelima, volume waduk cenderung stabil dan mengalami penurunan setiap akhir tahun karena pada saat akhir musim kemarau debit yang masuk ke waduk dan volume pada waduk semakin berkurang dikarenakan kebutuhan pembangkitan dan irigasi dipenuhi secara bersamaan. Debit maksimum yang dibutuhkan untuk pembangkitan sebesar 135,65 m3/det. Debit minimum yang dibutuhkan untuk pembangkitan sebesar 13,81 m3/det. Produksi energi listrik PLTA Sutami rata-rata per tahun mencapai 499.393,96 MWh atau sama dengan 499,39 GWh
STUDI PENENTUAN BATAS PENGOPERASIAN PLTA SUTAMI UNTUK OPERASIONAL YANG NOMINAL
No full textPLTA Sutami sebagai fungsi utama dari pembangunan bendungan Sutami dan merupakan pembangkit listrik yang memanfaatkan potensi waduk Sutami. Namun, adanya debit sedimen yang berasal dari sungai Metro pada tahun 2010 sebesar 5,6 kg/dt dan pada tahun 2011 sebesar 1,97 kg/dt dapat mempengaruhi kapasitas tampungan waduk. Pada penelitian ini dilakukan perhitungan dan analisis menggunakan pola operasi waduk selama 5 tahun, yaitu dari Desember 2010 hingga Nopember 2015 dengan periode bulanan tiap tahunnya. Dari perhitungan ini didapatkan grafik pola operasi waduk Sutami, debit maksimum dan debit minimum sebagai batasan pengoperasian PLTA Sutami, serta energi yang dihasilkan PLTA Sutami tiap tahunnya. Hasil penelitian yang telah dilakukan didapatkan kesimpulan bahwa pola operasi waduk menunjukkan waduk Sutami masih dapat memenuhi kebutuhan pembangkitan dan irigasi, volume waduk cenderung stabil dan mengalami penurunan setiap akhir tahun karena pada saat akhir musim kemarau debit yang masuk ke waduk dan volume pada waduk semakin berkurang dikarenakan kebutuhan pembangkitan dan irigasi dipenuhi secara bersamaan. Debit maksimum yang dibutuhkan untuk pembangkitan sebesar 135,65 m3/det. Debit minimum yang dibutuhkan untuk pembangkitan sebesar 13,81 m3/det. Produksi energi listrik PLTA Sutami rata-rata per tahun mencapai 499.393,96 MWh atau sama dengan 499,39 GWh. Kata Kunci: pola operasi waduk, debit, energ
Study of Fishery Building Capacity in Sutami-Lahor Reservoir
No full textSutami and Lahor reservoirs are man made reservoirs in East Java Province, Indonesia with multiple functions: flood control, irrigation, power plant, tourism and aquaculture. Based on measurement in 2014, the storage volume of Sutami and Lahor reservoirs were approximately 158,600,000 m3 and 29,060,000 m3 respectively. Fishery activities with floating net, trawl, and fishnet separator in Sutami and Lahor reservoirs held by society living nearby the reservoirs. Those activities produce wastes that create higher pollutant load in the reservoirs. Study of fishery load capacity in Sutami and Lahor reservoirs was conducted using chlorophyll-a method and intended to preserve the sustainable benefits of reservoir water resources. Measurement and steps to determine the fishery potential in Sutami reservoir started with the calculation of chlorophyll-a concentration in unit area (mg/m2), calculation of primary productivity through Beveridge Equation, unit value adjustment of result primary productivity with unit value of primary productivity in Beveridge Table, calculation of conversion result from productivity primary value to fish weight, and calculation of fish production based on width of Sutami reservoir. The right system to manage fisheries is sowing fishing with zoning system, which means dividing the territorial waters of the reservoir surface based on their physical and biological to organize the reservoir fisheries pattern based on reservoir priority function. The results showed the average potential of fishery in Sutami reservoir in range of 73.18 - 166.85 tons/year and 10.70 - 16.64 ton/year in Lahor reservoir.
Keywords: Chlorophyll-a, Fishery, Sutami-Lahor Reservoirs, Zoning
DIVERSITAS FITOPLANKTON PADA EKOSISTEM PERAIRAN WADUK SUTAMI, MALANG
Get PDFPenelitian ini bertujuan untuk mengetahui keanekaragaman fitoplankton yang berada pada ekosistem perairan Waduk Sutami, Malang berdasarkan komposisi dan dominansi genus fitoplankton, untuk mengetahui golongan fitoplankton yang dapat menimbulkan pencemaran pada perairan Waduk Sutami, Malang, juga mengetahui kualitas perairan di Waduk Sutami, Malang. Bahan penelitian yang digunakan adalah air sampel yang diambil dari perairan Waduk Sutami, Malang pada dua periode, yaitu bulan Agustus dan Oktober 2004 dengan 5 stasiun penelitian. Pengambilan sampel fitoplankton menggunakan jaring plankton ukuran mesh no. 25 dan fitoplankton diawetkan dengan formalin 4%. Sampel fitoplankton diamati di bawah mikroskop cahaya dan diidentifikasi hingga tingkat genus. Perhitungan kelimpahan menggunakan bilik hitung Malony-Palmer yang berkapasitas 0,1 ml. Data yang diperoleh dianalisis untuk mengetahui diversitas, dominansi, dan tingkat kesamaaan habitat dan komunitas antar stasiun juga fitoplankton yang dapat menyebabkan pencemaran pada perairan,.
Fitoplankton yang berhasil diidentifikasi ada 42 genus yang terdiri atas lima kelas, yaitu Chlorophyceae dan Bacillariophyceae masing-masing 14 genus, Cyanophyceae 12 genus, Dinophyceae dan Euglenaphyceae satu genus. Kelimpahan total fitoplankton 30674 individullt. Indeks diversitas fitoplankton pada Waduk Sutami, Malang sebesar 1,19 dengan rincian pada stasiun I 0,76; stasiun II 1,18; stasiun III 0,95; stasi un IV 0,94; stasiun V 0,95. Berdasarkan nilai indeks diversitas, kondisi perairan pada Waduk Sutami, Malang mengalami pencemaran tingkat sedang hingga berat. Fitoplankton yang dominan yaitu Ceratium, Synedra, dan Microcystis dengan indek dominansi kumulatif masingmasing adalah 50,03%, 14,56%, dan 7,34%. HasH penelitian menunjukkan 14 genus termasuk fitoplankton yang dapat menimbulkan pencemaran pada perairan yaitu Microcystis, Ceratium, Synedra, Staurastrum, Fragilaria, Navicula, Diatoma, Rivularia ,Anabaena, Oscillatoria, Nitzschia, Phacus, Lyngbya dan Ulothrix
DIVERSITAS FITOPLANKTON PADA EKOSISTEM PERAlRAN WADUK SUTAMI, MALANG
Get PDFPenelitian ini bertujuan untuk mengetahui keanekaragaman fitoplankton yang berada pada ekosistem perairan Waduk Sutami, Malang berdasarkan komposisi dan dominansi genus fitoplankton, untuk mengetahui golongan fitoplankton yang dapat menimbulkan pencemaran pada perairan Waduk Sutami, Malang, juga mengetahui kualitas perairan di Waduk Sutami, Malang. Bahan penelitian yang digunakan adalah air sampel yang diambil dari perairan Waduk Sutami, Malang pada dua periode, yaitu bulan Agustus dan Oktober 2004 dengan 5 stasiun penelitian. Pengambilan sampel fitoplankton menggunakan jaring plankton ukuran mesh no. 25 dan fitoplankton diawetkan dengan formalin 4%. Sampel fitoplankton diamati di bawah mikroskop cahaya dan diidentifikasi hingga tingkat genus. Perhitungan kelimpahan menggunakan bilik hitung Malony-Palmer yang berkapasitas 0,1 ml. Data yang diperoleh dianalisis untuk mengetahui diversitas, dominansi, dan tingkat kesamaaan habitat dan komunitas antar stasiun juga fitoplankton yang dapat menyebabkan pencemaran pada perairan,.
Fitoplankton yang berhasil diidentifikasi ada 42 genus yang terdiri atas lima kelas, yaitu Chlorophyceae dan Bacillariophyceae masing-masing 14 genus, Cyanophyceae 12 genus, Dinophyceae dan Euglenaphyceae satu genus. Kelimpahan total fitoplankton 30674 individullt. Indeks diversitas fitoplankton pada Waduk Sutami, Malang sebesar 1,19 dengan rincian pada stasiun I 0,76; stasiun II 1,18; stasiun III 0,95; stasi un IV 0,94; stasiun V 0,95. Berdasarkan nilai indeks diversitas, kondisi perairan pada Waduk Sutami, Malang mengalami pencemaran tingkat sedang hingga berat. Fitoplankton yang dominan yaitu Ceratium, Synedra, dan Microcystis dengan indek dominansi kumulatif masingmasing adalah 50,03%, 14,56%, dan 7,34%. HasH penelitian menunjukkan 14 genus termasuk fitoplankton yang dapat menimbulkan pencemaran pada perairan yaitu Microcystis, Ceratium, Synedra, Staurastrum, Fragilaria, Navicula, Diatoma, Rivularia ,Anabaena, Oscillatoria, Nitzschia, Phacus, Lyngbya dan Ulothrix
Status Trofik Dan Daya Tampung Beban Pencemaran Waduk Sutami
Get PDFSutami reservoir water quality declined due to the high character of organic waste disposal. This degradation is attributed by contamination due to natural erosion and agricultural waste, is also due to the entry of domestic waste (household) and industrial waste in upstream reservoirs Sutami. The addition of organic and inorganic materials in the form of waste into the reservoir in addition to changing the chemical composition of water, also affects the biological properties of these waters.
The purpose of this study was to determine the load capacity of pollution that occurred in the reservoir Sutami and trophic status based on the Regulation of the Minister of Environment No. 28 of 2009.
The study was conducted in the reservoir Sutami using primary and secondary data. Sampling locations in the central part of the reservoir at a depth of 0.3 m and 5 m and the lower reaches of the reservoir at a depth of 0.3 m and 10 m. Observed variables include levels of P (Phosphorus), water clarity, and Chlorophyll-a is contained in water reservoirs Sutami. Chlorophyll-a and the brightness of the water obtained from the sampling process independently, while the number of secondary data from phosphorus (P) obtained from Perum Jasa Tirta I from January 2010 until May of 2011. The data obtained were analyzed with descriptive statistics showing the average and standard deviation.
The results showed that the condition of the water reservoir was contaminated Sutami in moderate to severe, both in the location of reservoirs upstream and downstream reservoirs. Trophic status of reservoirs Sutami is eutrofik to hypertrophic occurs on the downstream and middle reservoirs. Impacts arising from pollution levels that occur in the Sutami reservoir is the potential for algae bloom due to the high amount of phosphorus and chlorophyll-a. Load carrying capacity of the reservoir pollution Sutami for total phosphorus (kg / year) at the upstream location; 39 kg P / year, the middle; 195 kg P / year and downstream; 178.5 kg P / year.
Keywords: pollution, trophic status, chlorophyll-a, reservoirs Sutam
Identification of Cracked Zone in Sutami dam Using Geoelectrical Method
No full textWe identified the craked zones based on geoelectrical resistivity method in Sutami Dam. There are four lines measurement of geoelectrical resistivity method with a length of 380-400 meters. The direction of each line is from the northeast to the southwest. All of the tracks are located at the top of Sutami Dam i.e. two tracks in the upstream and the others in the downstream. From the analysis we found that the lithology is detected by geoelectrical resistivty method showed two layers of design of Sutami Dam. The two layers that are detected are transition zone and filter zone. Transition zone consists of sandstone rock containing water (0.922 Ωm-9.57 Ωm) and dry sandstone (>9.57 Ωm-320 Ωm). Filter zone consists of sand (>320 Ωm-4410 Ωm). Cracked zones spread in the upstream, downstream, and roadway at the top of Sutami Dam which are indicated by the presence of low resistivity (0.922 Ωm-9.57 Ωm) based on 3D processing of data of geoelectrical resistivity. The distribution of cracked zone indicates that Sutami Dam is susceptible to ground movement
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