Lily Montarcih Limantara - Academia.edu (original) (raw)

Papers by Lily Montarcih Limantara

Research paper thumbnail of The Reliability of W-flow Run-off-Rainfall Model in Predicting Rainfall to the Discharge

Civil Engineering Journal, Jul 1, 2023

Research paper thumbnail of Studi Optimasi Distribusi Air Irigasi Di Daerah Irigasi Lodoyo

Jurnal Teknik Pengairan: Journal of Water Resources Engineering, Sep 18, 2014

Research paper thumbnail of Studi Penilaian Indikator Kinerja Das Konaweha Akibat Perubahan Tata Guna Lahan Berdasarkan Kriteria Hidrologis

Jurnal Teknik Pengairan: Journal of Water Resources Engineering, Oct 3, 2014

Research paper thumbnail of Studi Optimasi Pemanfaatan Air Irigasi pada Daerah Irigasi Gumbasa Kabupaten Sigi Menggunakan Program Linier

Jurnal Teknologi dan Rekayasa Sumber Daya Air, Apr 15, 2021

Research paper thumbnail of Design of Stilling Basin for Decreasing Back Water in the Dam Foot

International journal of GEOMATE : geotechnique, construction materials and environment, Nov 1, 2018

Research paper thumbnail of Numerical Modelling of Constructed Wetland using Software HYDRUS 2D

IOP conference series, May 1, 2023

One of the problems involving water bodies is the pollution of water sources, which later becomes... more One of the problems involving water bodies is the pollution of water sources, which later becomes the parent of various social, economic, and health problems. One of these conditions can be overcome by utilizing phytoremediation through constructed wetlands. HYDRUS is a software that offers easy modelling of pollutant decay mechanisms in water bodies and constructed wetlands using finite element method. This study aims to show and analyse how HYDRUS software can model the mechanism in constructed wetland by using finite element method. The parameters observed are the time for the pollutant, namely ammonia, nitrate, and inorganic phosphorous, to reach the outlet, and the response curve of the pollutant loading on the model. From the simulation, it can be inferred that the maximum velocity of the water going through the constructed wetland is 8.11 m/day, or 811 cm/day. The dominating velocity in the wetland is around 160 cm/day, or 1.6 m/day. The response curve of the pollutant transport is also in accordance with theoretical response for impulse loading. The result yields the effectivity of simulated constructed wetland, which are 90.33% for ammonia and nitrate, and 90.26% for inorganic phosphorous. The result yields quite optimistic effectivity of the constructed wetland, which may be caused by the assumptions made in the model, which goes through simplification method. It can also be caused by the differences in plants assumption. In the HYDRUS simulation, the plant used is grass, which does not specify what kind of grass. Meanwhile, the physical simulation uses water bamboo.

Research paper thumbnail of Optimization of Water Distribution to Support the Balance of Water Usage: A Case Study of the Sempor Irrigation System, Central Java, Indonesia

IOP conference series, Feb 11, 2020

Research paper thumbnail of Analisa Debit Menggunakan Metode Thornthwaite Mather Untuk Perhitungan Neraca Air DI Sub Das Lesti

Jurnal Mahasiswa Jurusan Teknik Pengairan, Aug 8, 2019

ABSTRAK: Pada studi ini, akan membahas tentang neraca air di Sub DAS Lesti Kabupaten Malang denga... more ABSTRAK: Pada studi ini, akan membahas tentang neraca air di Sub DAS Lesti Kabupaten Malang dengan tujuan untuk mengetahui keseimbangan antara nilai ketersediaan air dengan kebutuhan air selama 25 tahun ke depan. Analisa ketersediaan air berasal dari dua sektor yaitu ketersediaan air permukaan yang dihitung dengan mengalihragamkan hujan menjadi debit dengan Metode Thornthwaite Mather dan ketersediaan air bawah permukaan yang berasal dari mata air. Sedangkan untuk perhitungan kebutuhan air dalam studi ini berasal dari enam sektor yakni kebutuhan domestik, non domestik, peternakan, perikanan, pertanian dan industri. Dari hasil analisa didapat rata-rata ketersediaan air Sub DAS Lesti sebesar 1035,59 juta m 3 /tahun. Sedangkan kebutuhan air yang dihitung berdasarkan 2 skenario yaitu skenario satu sebesar 152,60 juta m 3 /tahun dan pada skenario dua sebesar 130,35 juta m 3 /tahun. Dari hasil tersebut didapatkan bahwa ketersediaan air yang ada dapat mencakupi seluruh kebutuhan air di Sub DAS Lesti selama 25 tahun ke depan atau dengan kata lain hal ini menunjukkan keadaan surplus. Kata kunci: Sub DAS Lesti, Thornthwaite Mather, ketersediaan air, kebutuhan air, neraca air. ABSTRACT: In this study, will discuss about water balance in the Lesti Sub-Watershed in Malang Regency. The purpose of this research is to determine the balance between the value of water availability and water requirements for the next 25 years. Analysis of water availability is calculated from two sectors, availability of water surface which is calculated by transferring rain to discharge with the Thornthwaite Mather method, and availability of water subsurface from water springs. Whereas the water requirements is calculated from six sectors, namely domestic demand, non domestic, animal husbandry, fishery, irrigation and industry. From the analysis, average of water availability of the Lesti Sub-Watershed is 1035,59 million m 3 /year. Whereas water reqirements are calculated based on two scenarios, in first scenario is 152,60 million m 3 /year and in second scenario is 130,35 million m 3 /year. From these result it was found that the availability of available water can cover all water requirements in the Lesti Sub-Watershed for the next 25 years or in other word this indicated a surplus situation. Keywords: Lesti Sub-Watershed, Thornthwaite Mather, water availability, water requirements, water balance.

Research paper thumbnail of The Usage of Bamboo as the Concrete Carcass Due to the Pressure and Diffraction Strength

International journal of innovative technology and exploring engineering, Sep 30, 2019

Research paper thumbnail of Evaluation of Roughness Constant of River in Synthetic Unit Hydrograph

Research paper thumbnail of Rationalization of Rainfall Station Network in Welang Watershed Using Kagan-Rodda Method

Research paper thumbnail of Evaluasi Rasionalisasi Pos Hujan dengan Metode Stepwise dan Standar WMO pada DAS Telomoyo Kabupaten Kebumen

Jurnal Teknologi dan Rekayasa Sumber Daya Air

The Telomoyo watershed is included in the category of mountainous areas and tropical plains. In t... more The Telomoyo watershed is included in the category of mountainous areas and tropical plains. In term of fulfilling the need for adequate water infrastructure, good quality rain data is needed. The methods that can be used are stepwise rationalization and evaluation based on WMO guidance. The stepwise method is chosen in order to check the correlation between the rainfall data and debit data based on multi-correlated statistics and the WMO guidance are used to complete the minimum requirement of the number of rainfall stations in a watershed according to geographical aspects. It was found that the Telomoyo watershed has met the minimum WMO standards, namely with 9 rainfall stations, but it is still considered irrational due to the uneven distribution of rainfall station as seen from the range of influence in each rainfall station. Meanwhile, from the stepwise analysis, it is found that the combination of 4 rainfall stations is considered rational and meets WMO standards. However, thi...

Research paper thumbnail of Rasionalisasi Kerapatan Pos Stasiun Hujan dan Pos Duga Air Sub DAS Pacal dengan Metode Stepwise

Jurnal Teknologi dan Rekayasa Sumber Daya Air

Dalam kegiatan perencanaan serta pengembangan sumber daya air, dibutuhkan data hidrologi dengan k... more Dalam kegiatan perencanaan serta pengembangan sumber daya air, dibutuhkan data hidrologi dengan kuantitas dan kualitas data yang akurat. Kualitas data yang dimaksud adalah bahwa data dapat menggambarkan kondisi hidrologi sesuai dengan yang terjadi di lapangan, seperti apakah data hujan berkaitan dengan data debit yang ada. Penyebaran pos stasiun hujan di suatu wilayah serta nilai kerapatannya dapat mempengaruhi tingkat kesalahan rerata suatu data hidrologi. Rasionalisasi kerapatan pos stasiun hujan dan pos duga air dilakukan dengan metode Stepwise dan standar WMO pada Sub DAS Pacal. Data yang digunakan adalah data hujanusebagai variabelibebas dan dataodebit sebagai variabeloterikat dengan panjang data selama 10 tahun. Metode Stepwise ini merupakan metode stastistika yang dapat mengetahui pos hujan mana yang berkorelasi secara signifikan terhadap data debit. Standar WMO dapat mengetahui kebutuhan minimal jumlah pos hujan berdasarkan karateristik geografi suatu daerah. Hasil analisis ...

Research paper thumbnail of Analisis Volume Limpasan Permukaan dan Erosi Tanah dengan Model Soil Conservation Service (SCS) dan Modified Universal Soil Loss Equation (MUSLE) Menggunakan Alat Rainfall Simulator

Jurnal Teknologi dan Rekayasa Sumber Daya Air

Jumlah curah hujan melampaui laju infiltrasi dan penguapan maka akan mengakibatkan limpasan permu... more Jumlah curah hujan melampaui laju infiltrasi dan penguapan maka akan mengakibatkan limpasan permukaan. Hujan dengan kekuatan dan butiran yang besar akan membuat tanah menjadi terkelupas dan akan menyebabkan erosi. Maka penelitian ini bertujuan untuk menganalisi pengaruh dari intensitas hujan yang bervariasi terhadap volume limpasan permukaan dan laju erosi pada alat rainfall simulator. Studi ini dilakukan pada alat rainfall simulator dengan variasi hujan yaitu 0,5 liter/menit, 1,0 liter/menit, 1,5 liter/menit, dan 2,0 liter/menit dengan kemiringan alat rainfall simulator sebesar 5% dan tanpa vegetasi. Metode yang digunakan pada penelitian ini adalah metode Soil Conservation Service (SCS) yaitu untuk mengetahui seberapa besar pengaruh variasi intensitas hujan terhadap volume limpasan permukaan serta menggunakan metode modified universal soill loss equation (MUSLE) untuk mengetahui seberapa besar pengaruh variasi intensitas hujan terhadap laju erosi. Hasil dari hubungan intensitas huj...

Research paper thumbnail of Rationalization of Rainfall Station Density in the Jatiroto Sub-Watershed Using Ground and Satellite Rainfall Data

Civil and Environmental Science

This study uses ground and CHIRPS data to rationalize the density of rainfall stations in the Jat... more This study uses ground and CHIRPS data to rationalize the density of rainfall stations in the Jatiroto Sub-watershed, Lumajang Regency. This study aimed to determine the suitability of the CHIRPS satellite rainfall data to the measurement data. In addition, it determines the density of rainfall stations based on WMO standards. Also, the Kagan-Rodda method uses measurement and satellite data to determine rainfall station recommendations' results. The method used for the suitability test uses the value of RMSE, NSE, Correlation Coefficient, and Relative Error. And the WMO standard for analyzing the number of rainfall station. Knowing the rationalization and recommendations for placing rainfall stations using the Kagan-Rodda method by considering WMO standards, root mean square error, and interpolation errors. The results obtained include the appropriateness of satellite data, the number of rainfall stations at the research location according to WMO standards, and recommendations f...

Research paper thumbnail of Rasionalisasi Kerapatan Pos Hujan Menggunakan Metode Kagan-Rodda DI Sub Das Lesti

Jurnal Teknik Sipil, Nov 10, 2019

Research paper thumbnail of Analysis of Flood Peak Discharge Based on Watershed Shape Factors

Civil and environmental science journal, Apr 1, 2022

Research paper thumbnail of Hydrology Characteristics in Krukut River Riparian Buffer Zone

Journal of Southwest Jiaotong University, 2021

This research aims to investigate the characteristic of hydrology in the Krukut River. However, i... more This research aims to investigate the characteristic of hydrology in the Krukut River. However, it studies an interesting floodplain like the riparian buffer zone (RBZ). RBZ is close adjacent to the river waters, generally accompanied by shrubs and the other crops along a river. It is useful for stabilizing the streams and minimizing the flood damages. The development of a region will impact the surrounding ecosystem that has been a developed human activity along the river, one of which is the Krukut River. The methodology consists of hydrological analysis for finding the characteristic of hydrology. The hydrology is analyzed using the water discharge data of Krukut River headwater. However, the maximum water discharge frequency is analyzed by using two models that are a) Log Pearson distribution and b) Gumbel distribution. The observations are made during the survey reveal that RBZs and floodplain areas are dominated by human habitation on both banks. The result of the analysis sho...

Research paper thumbnail of The limiting physical parameters of synthetic unit hydrograph

World applied sciences journal, 2009

This paper studied Synthetic Unit Hydrograph Model. The methodology consisted of analysis of obse... more This paper studied Synthetic Unit Hydrograph Model. The methodology consisted of analysis of observed unit hydrograph and the primary physical parameters of watershed. Results revealed that length of river and area of watershed were the primary physical parameters. Further research is needed focusing on roughness coefficient of the river.

Research paper thumbnail of Analisa Keandalan Tampungan Waduk Di Embung Tambak Pocok Bangkalan

Abstrak . Kebutuhan air domestik dihitung berdasarkan jumlah penduduk dan standar kebutuhan air d... more Abstrak . Kebutuhan air domestik dihitung berdasarkan jumlah penduduk dan standar kebutuhan air di wilayah administratif yang akan dilayani. Untuk mengestimasi ketersediaan air dalam studi ini digunakan analisa debit Model NRECA dan F.J Mock. Untuk keperluan analisa keandalan tampungam, berdasarkan data debit hasil simulasi F.J Mock dan NRECA selama 20 tahun, dilakukan perpanjangan data debit dengan menggunakan metode Thomas-Fiering. Hasil simulasi keandalan embung dengan melakukan proses simulasi tiap data debit hasil bangkitan sepanjang 20 tahun dengan masa proyeksi selama 20 tahun dengan asumsi tidak ada perubahan parameter DAS, terdapat indikasi bahwa data debit untuk NRECA mengalami kegagalan pada debit tahun 2004, terjadi peluang keandalan 100% pada tahun 2007, dan 25% pada tahun 2026. Sedangkan untuk data debit hasil dari F.J Mock, peluang keandalan 100% terjadi pada tahun 2007 sampai dengan tahun 2026 untuk semua simulasi data debit. Dikarenakan tidak adanya data debit di la...

Research paper thumbnail of The Reliability of W-flow Run-off-Rainfall Model in Predicting Rainfall to the Discharge

Civil Engineering Journal, Jul 1, 2023

Research paper thumbnail of Studi Optimasi Distribusi Air Irigasi Di Daerah Irigasi Lodoyo

Jurnal Teknik Pengairan: Journal of Water Resources Engineering, Sep 18, 2014

Research paper thumbnail of Studi Penilaian Indikator Kinerja Das Konaweha Akibat Perubahan Tata Guna Lahan Berdasarkan Kriteria Hidrologis

Jurnal Teknik Pengairan: Journal of Water Resources Engineering, Oct 3, 2014

Research paper thumbnail of Studi Optimasi Pemanfaatan Air Irigasi pada Daerah Irigasi Gumbasa Kabupaten Sigi Menggunakan Program Linier

Jurnal Teknologi dan Rekayasa Sumber Daya Air, Apr 15, 2021

Research paper thumbnail of Design of Stilling Basin for Decreasing Back Water in the Dam Foot

International journal of GEOMATE : geotechnique, construction materials and environment, Nov 1, 2018

Research paper thumbnail of Numerical Modelling of Constructed Wetland using Software HYDRUS 2D

IOP conference series, May 1, 2023

One of the problems involving water bodies is the pollution of water sources, which later becomes... more One of the problems involving water bodies is the pollution of water sources, which later becomes the parent of various social, economic, and health problems. One of these conditions can be overcome by utilizing phytoremediation through constructed wetlands. HYDRUS is a software that offers easy modelling of pollutant decay mechanisms in water bodies and constructed wetlands using finite element method. This study aims to show and analyse how HYDRUS software can model the mechanism in constructed wetland by using finite element method. The parameters observed are the time for the pollutant, namely ammonia, nitrate, and inorganic phosphorous, to reach the outlet, and the response curve of the pollutant loading on the model. From the simulation, it can be inferred that the maximum velocity of the water going through the constructed wetland is 8.11 m/day, or 811 cm/day. The dominating velocity in the wetland is around 160 cm/day, or 1.6 m/day. The response curve of the pollutant transport is also in accordance with theoretical response for impulse loading. The result yields the effectivity of simulated constructed wetland, which are 90.33% for ammonia and nitrate, and 90.26% for inorganic phosphorous. The result yields quite optimistic effectivity of the constructed wetland, which may be caused by the assumptions made in the model, which goes through simplification method. It can also be caused by the differences in plants assumption. In the HYDRUS simulation, the plant used is grass, which does not specify what kind of grass. Meanwhile, the physical simulation uses water bamboo.

Research paper thumbnail of Optimization of Water Distribution to Support the Balance of Water Usage: A Case Study of the Sempor Irrigation System, Central Java, Indonesia

IOP conference series, Feb 11, 2020

Research paper thumbnail of Analisa Debit Menggunakan Metode Thornthwaite Mather Untuk Perhitungan Neraca Air DI Sub Das Lesti

Jurnal Mahasiswa Jurusan Teknik Pengairan, Aug 8, 2019

ABSTRAK: Pada studi ini, akan membahas tentang neraca air di Sub DAS Lesti Kabupaten Malang denga... more ABSTRAK: Pada studi ini, akan membahas tentang neraca air di Sub DAS Lesti Kabupaten Malang dengan tujuan untuk mengetahui keseimbangan antara nilai ketersediaan air dengan kebutuhan air selama 25 tahun ke depan. Analisa ketersediaan air berasal dari dua sektor yaitu ketersediaan air permukaan yang dihitung dengan mengalihragamkan hujan menjadi debit dengan Metode Thornthwaite Mather dan ketersediaan air bawah permukaan yang berasal dari mata air. Sedangkan untuk perhitungan kebutuhan air dalam studi ini berasal dari enam sektor yakni kebutuhan domestik, non domestik, peternakan, perikanan, pertanian dan industri. Dari hasil analisa didapat rata-rata ketersediaan air Sub DAS Lesti sebesar 1035,59 juta m 3 /tahun. Sedangkan kebutuhan air yang dihitung berdasarkan 2 skenario yaitu skenario satu sebesar 152,60 juta m 3 /tahun dan pada skenario dua sebesar 130,35 juta m 3 /tahun. Dari hasil tersebut didapatkan bahwa ketersediaan air yang ada dapat mencakupi seluruh kebutuhan air di Sub DAS Lesti selama 25 tahun ke depan atau dengan kata lain hal ini menunjukkan keadaan surplus. Kata kunci: Sub DAS Lesti, Thornthwaite Mather, ketersediaan air, kebutuhan air, neraca air. ABSTRACT: In this study, will discuss about water balance in the Lesti Sub-Watershed in Malang Regency. The purpose of this research is to determine the balance between the value of water availability and water requirements for the next 25 years. Analysis of water availability is calculated from two sectors, availability of water surface which is calculated by transferring rain to discharge with the Thornthwaite Mather method, and availability of water subsurface from water springs. Whereas the water requirements is calculated from six sectors, namely domestic demand, non domestic, animal husbandry, fishery, irrigation and industry. From the analysis, average of water availability of the Lesti Sub-Watershed is 1035,59 million m 3 /year. Whereas water reqirements are calculated based on two scenarios, in first scenario is 152,60 million m 3 /year and in second scenario is 130,35 million m 3 /year. From these result it was found that the availability of available water can cover all water requirements in the Lesti Sub-Watershed for the next 25 years or in other word this indicated a surplus situation. Keywords: Lesti Sub-Watershed, Thornthwaite Mather, water availability, water requirements, water balance.

Research paper thumbnail of The Usage of Bamboo as the Concrete Carcass Due to the Pressure and Diffraction Strength

International journal of innovative technology and exploring engineering, Sep 30, 2019

Research paper thumbnail of Evaluation of Roughness Constant of River in Synthetic Unit Hydrograph

Research paper thumbnail of Rationalization of Rainfall Station Network in Welang Watershed Using Kagan-Rodda Method

Research paper thumbnail of Evaluasi Rasionalisasi Pos Hujan dengan Metode Stepwise dan Standar WMO pada DAS Telomoyo Kabupaten Kebumen

Jurnal Teknologi dan Rekayasa Sumber Daya Air

The Telomoyo watershed is included in the category of mountainous areas and tropical plains. In t... more The Telomoyo watershed is included in the category of mountainous areas and tropical plains. In term of fulfilling the need for adequate water infrastructure, good quality rain data is needed. The methods that can be used are stepwise rationalization and evaluation based on WMO guidance. The stepwise method is chosen in order to check the correlation between the rainfall data and debit data based on multi-correlated statistics and the WMO guidance are used to complete the minimum requirement of the number of rainfall stations in a watershed according to geographical aspects. It was found that the Telomoyo watershed has met the minimum WMO standards, namely with 9 rainfall stations, but it is still considered irrational due to the uneven distribution of rainfall station as seen from the range of influence in each rainfall station. Meanwhile, from the stepwise analysis, it is found that the combination of 4 rainfall stations is considered rational and meets WMO standards. However, thi...

Research paper thumbnail of Rasionalisasi Kerapatan Pos Stasiun Hujan dan Pos Duga Air Sub DAS Pacal dengan Metode Stepwise

Jurnal Teknologi dan Rekayasa Sumber Daya Air

Dalam kegiatan perencanaan serta pengembangan sumber daya air, dibutuhkan data hidrologi dengan k... more Dalam kegiatan perencanaan serta pengembangan sumber daya air, dibutuhkan data hidrologi dengan kuantitas dan kualitas data yang akurat. Kualitas data yang dimaksud adalah bahwa data dapat menggambarkan kondisi hidrologi sesuai dengan yang terjadi di lapangan, seperti apakah data hujan berkaitan dengan data debit yang ada. Penyebaran pos stasiun hujan di suatu wilayah serta nilai kerapatannya dapat mempengaruhi tingkat kesalahan rerata suatu data hidrologi. Rasionalisasi kerapatan pos stasiun hujan dan pos duga air dilakukan dengan metode Stepwise dan standar WMO pada Sub DAS Pacal. Data yang digunakan adalah data hujanusebagai variabelibebas dan dataodebit sebagai variabeloterikat dengan panjang data selama 10 tahun. Metode Stepwise ini merupakan metode stastistika yang dapat mengetahui pos hujan mana yang berkorelasi secara signifikan terhadap data debit. Standar WMO dapat mengetahui kebutuhan minimal jumlah pos hujan berdasarkan karateristik geografi suatu daerah. Hasil analisis ...

Research paper thumbnail of Analisis Volume Limpasan Permukaan dan Erosi Tanah dengan Model Soil Conservation Service (SCS) dan Modified Universal Soil Loss Equation (MUSLE) Menggunakan Alat Rainfall Simulator

Jurnal Teknologi dan Rekayasa Sumber Daya Air

Jumlah curah hujan melampaui laju infiltrasi dan penguapan maka akan mengakibatkan limpasan permu... more Jumlah curah hujan melampaui laju infiltrasi dan penguapan maka akan mengakibatkan limpasan permukaan. Hujan dengan kekuatan dan butiran yang besar akan membuat tanah menjadi terkelupas dan akan menyebabkan erosi. Maka penelitian ini bertujuan untuk menganalisi pengaruh dari intensitas hujan yang bervariasi terhadap volume limpasan permukaan dan laju erosi pada alat rainfall simulator. Studi ini dilakukan pada alat rainfall simulator dengan variasi hujan yaitu 0,5 liter/menit, 1,0 liter/menit, 1,5 liter/menit, dan 2,0 liter/menit dengan kemiringan alat rainfall simulator sebesar 5% dan tanpa vegetasi. Metode yang digunakan pada penelitian ini adalah metode Soil Conservation Service (SCS) yaitu untuk mengetahui seberapa besar pengaruh variasi intensitas hujan terhadap volume limpasan permukaan serta menggunakan metode modified universal soill loss equation (MUSLE) untuk mengetahui seberapa besar pengaruh variasi intensitas hujan terhadap laju erosi. Hasil dari hubungan intensitas huj...

Research paper thumbnail of Rationalization of Rainfall Station Density in the Jatiroto Sub-Watershed Using Ground and Satellite Rainfall Data

Civil and Environmental Science

This study uses ground and CHIRPS data to rationalize the density of rainfall stations in the Jat... more This study uses ground and CHIRPS data to rationalize the density of rainfall stations in the Jatiroto Sub-watershed, Lumajang Regency. This study aimed to determine the suitability of the CHIRPS satellite rainfall data to the measurement data. In addition, it determines the density of rainfall stations based on WMO standards. Also, the Kagan-Rodda method uses measurement and satellite data to determine rainfall station recommendations' results. The method used for the suitability test uses the value of RMSE, NSE, Correlation Coefficient, and Relative Error. And the WMO standard for analyzing the number of rainfall station. Knowing the rationalization and recommendations for placing rainfall stations using the Kagan-Rodda method by considering WMO standards, root mean square error, and interpolation errors. The results obtained include the appropriateness of satellite data, the number of rainfall stations at the research location according to WMO standards, and recommendations f...

Research paper thumbnail of Rasionalisasi Kerapatan Pos Hujan Menggunakan Metode Kagan-Rodda DI Sub Das Lesti

Jurnal Teknik Sipil, Nov 10, 2019

Research paper thumbnail of Analysis of Flood Peak Discharge Based on Watershed Shape Factors

Civil and environmental science journal, Apr 1, 2022

Research paper thumbnail of Hydrology Characteristics in Krukut River Riparian Buffer Zone

Journal of Southwest Jiaotong University, 2021

This research aims to investigate the characteristic of hydrology in the Krukut River. However, i... more This research aims to investigate the characteristic of hydrology in the Krukut River. However, it studies an interesting floodplain like the riparian buffer zone (RBZ). RBZ is close adjacent to the river waters, generally accompanied by shrubs and the other crops along a river. It is useful for stabilizing the streams and minimizing the flood damages. The development of a region will impact the surrounding ecosystem that has been a developed human activity along the river, one of which is the Krukut River. The methodology consists of hydrological analysis for finding the characteristic of hydrology. The hydrology is analyzed using the water discharge data of Krukut River headwater. However, the maximum water discharge frequency is analyzed by using two models that are a) Log Pearson distribution and b) Gumbel distribution. The observations are made during the survey reveal that RBZs and floodplain areas are dominated by human habitation on both banks. The result of the analysis sho...

Research paper thumbnail of The limiting physical parameters of synthetic unit hydrograph

World applied sciences journal, 2009

This paper studied Synthetic Unit Hydrograph Model. The methodology consisted of analysis of obse... more This paper studied Synthetic Unit Hydrograph Model. The methodology consisted of analysis of observed unit hydrograph and the primary physical parameters of watershed. Results revealed that length of river and area of watershed were the primary physical parameters. Further research is needed focusing on roughness coefficient of the river.

Research paper thumbnail of Analisa Keandalan Tampungan Waduk Di Embung Tambak Pocok Bangkalan

Abstrak . Kebutuhan air domestik dihitung berdasarkan jumlah penduduk dan standar kebutuhan air d... more Abstrak . Kebutuhan air domestik dihitung berdasarkan jumlah penduduk dan standar kebutuhan air di wilayah administratif yang akan dilayani. Untuk mengestimasi ketersediaan air dalam studi ini digunakan analisa debit Model NRECA dan F.J Mock. Untuk keperluan analisa keandalan tampungam, berdasarkan data debit hasil simulasi F.J Mock dan NRECA selama 20 tahun, dilakukan perpanjangan data debit dengan menggunakan metode Thomas-Fiering. Hasil simulasi keandalan embung dengan melakukan proses simulasi tiap data debit hasil bangkitan sepanjang 20 tahun dengan masa proyeksi selama 20 tahun dengan asumsi tidak ada perubahan parameter DAS, terdapat indikasi bahwa data debit untuk NRECA mengalami kegagalan pada debit tahun 2004, terjadi peluang keandalan 100% pada tahun 2007, dan 25% pada tahun 2026. Sedangkan untuk data debit hasil dari F.J Mock, peluang keandalan 100% terjadi pada tahun 2007 sampai dengan tahun 2026 untuk semua simulasi data debit. Dikarenakan tidak adanya data debit di la...