scholarly journals Aplikasi Penginderaan Jauh dan EPA-SWMM untuk Simulasi Debit Banjir Akibat Perubahan Lahan Sub DAS Banjaran

Teknik ◽  
2018 ◽  
Vol 38 (2) ◽  
pp. 119
Author(s):  
Mohammad Lutfi Ariwibowo ◽  
S Suripin ◽  
Pranoto Samto Atmojo
Keyword(s):  
Water Management ◽  
Information System ◽  
Environmental Protection Agency ◽  
Storm Water ◽  
Management Model ◽  
Protection Agency ◽  
Storm Water Management Model ◽  
Geography Information System ◽  
Geography Information ◽  
Swmm Model

Tataguna  lahan  di  Sub  Daerah  Aliran  Sungai  (DAS)  Banjaran  telah mengalami perubahan yang cukup tinggi selama  kurun  waktu  1995  sampai  2001. Lahan sawah berkurang 1.759,28 hektar menjadi 1.603,97 hektar, tegalan berkurang  289,54 hektar menjadi 283,32 hektar dan permukiman bertambah 1.284,36  hektar menjadi 1.445,88 hektar. Alih fungsi lahan ini mengakibatkan banjir sering terjadi. Beberapa kali Sungai Banjaran meluap menyebabkan banjir di permukiman dan ruas jalan. Kajian pengaruh perubahan lahan terhadap debit banjir perlu dilakukan sehingga peningkatan debit banjir dapat dikendalikan.Tujuan penelitian ini menganalisis debit banjir secara periodik sesuai dengan perubahan tata guna lahan yang terjadi berdasarkan data hidrologi dan parameter DAS. Perhitungan debit banjir dilakukan dengan kalibrasi Environmental Protection Agency – Storm Water Management Model( EPA-SWMM), yaitu metode Hidrograf Observasi (debit terukur) yang  dikalibrasi dengan metode Nash. Analisis perubahan lahan menggunakan peta tataguna lahan tahun 2005, Citra Satelit Quick Bird tahun 2010 dan 2014 yang berbasis Geography Information System (GIS). Penggunaan citra satelit resolusi tinggi Quick Bird  memenuhi ketepatan dalam menentukan daerah impervious dan pervious sertamorfometri DAS sebagai parameter utama dalam input EPA-SWMM. Model yang telah terkalibrasi digunakan untuk simulasi debit rencana  sampai periode ulang  50  tahun.Perubahan  lahan  selama tahun  2005-2014  permukiman meningkat sebesar 10,98 ha (2,39 %), luas hutan menurun 1,67 ha (0,07%), telah mengakibatkan kenaikan debit banjir Q2  sampai Q50  tahun. Besarnya debit dan kenaikannya berturut-turut sebagai berikut : Q2  tahun sebesar 3,08 m3/dtk (2,16 %), Q5 tahun sebesar 3,5 m3/dtk (1,87 %), Q10 tahun sebesar 3,72 m3/dtk (1,7 %), Q25 tahun sebesar 3,94 m3/dtk (1,60 %) dan Q50 tahun sebesar 4,13 m3/dtk (1,50 %).  Volume banjir terjadi peningkatan yakni: Q2 tahun sebesar 0,57 % (10. 106 ) liter, Q5 tahun sebesar 0,45 % (12.106 ) liter, Q10 tahun sebesar 0,42 % (13. 106) liter, Q25 tahun sebesar 0,33 % (12.106) liter dan Q50 tahun sebesar 0,35 % (14.106) liter. Usaha pengendalian banjir pada periode ulang 50 tahun (Q50) yang disimulasikan mampu menurunkan debit banjir antara lain : penegakkan hukum  sebesar 14,43 m3/dtk (5 %), embung sebesar 20,9 m3/dtk  (7,1 %) dan sumur resapan sebesar 31,18 m3/dtk (10,73 %). Skenario RTRW sebesar 26,3 m3/dtk (9,05 %), kombinasi sumur resapan dan penegakan hukum sebesar 45,92 m3/dtk (15,81 %) dan kombinasi embung dan penegakan hukum sebesar 40,58 m3/dtk (13,97 %). Dari hasil simulasi diperoleh pembuatan sumur resapan, kombinasi sumur resapan dan penegakan hukum, kombinasi embung dan penegakan hukum mampu menurunkan debit banjir sampai pada Q25

scholarly journals Modelação hidráulica e de qualidade da água dos sistemas de drenagem em meios urbanos

2017 ◽  
Vol 22 (2) ◽  
pp. 351-360
Author(s):  
Luís Filipe de Oliveira Girão ◽  
Nuno Eduardo da Cruz Simões ◽  
José Alfeu Almeida de Sá Marques ◽  
João Paulo Correia Leitão ◽  
Rui Daniel Pina
Keyword(s):  
Water Management ◽  
United States ◽  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Overland Flow ◽  
Storm Water ◽  
Management Model ◽  
Protection Agency ◽  
Storm Water Management ◽  
Storm Water Management Model

RESUMO: As inundações urbanas estão se tornando cada vez mais frequentes, de tal forma que a União Europeia publicou a Diretiva 2007/60/CE no sentido de mitigar as consequências relacionadas com este fenômeno e de impor limites à concentração de poluentes nas águas pluviais. O objetivo deste artigo foi apresentar uma modelação dos sistemas de drenagem em situação de inundações, baseada no software da United States Environmental Protection Agency (EPA), Storm Water Management Model (SWMM), em que o estudo de caso é analisar um sistema de drenagem urbana unitário, inserido na Zona Central de Coimbra, em Portugal. Recorrendo à metodologia Automatic Overland Flow Delineation (AOFD) para a geração de uma rede de drenagem superficial e implementando-a no SWMM, obteve-se um modelo de drenagem dual, que permite a análise do escoamento em situação de inundações, incluindo o controle de escoamento entre a superfície e a rede de coletores e a modelação da qualidade da água à superfície. Este modelo permite quantificar a carga poluente à superfície, relativamente ao parâmetro de sólidos suspensos totais, para um evento de precipitação extrema.

scholarly journals Inundation analysis of metro systems with the storm water management model incorporated into a geographical information system: a case study in Shanghai

2019 ◽  
Vol 23 (10) ◽  
pp. 4293-4307 ◽  
Author(s):  
Hai-Min Lyu ◽  
Shui-Long Shen ◽  
Jun Yang ◽  
Zhen-Yu Yin
Keyword(s):  
Water Management ◽  
Information System ◽  
Geographical Information System ◽  
Geographical Information ◽  
Storm Water ◽  
Management Model ◽  
Urban Centre ◽  
Storm Water Management ◽  
Storm Water Management Model ◽  
Metro System

Abstract. This study presents an integrated approach to evaluate inundation risks, in which an algorithm is proposed to integrate the storm water management model (SWMM) into a geographical information system (GIS). The proposed algorithm simulates the flood inundation of overland flows and in metro stations for each designed scenario. It involves the following stages: (i) determination of the grid location and spreading coefficient and (ii) an iterative calculation of the spreading process. In addition, an equation is proposed to calculate the inundation around a metro station and to predict the potential inundation risks of the metro system. The proposed method is applied to simulate the inundation risk of the metro system in the urban centre of Shanghai under 50-year, 100-year, and 500-year rainfall intensities. Both inundation extent and depth are obtained and the proposed method is validated with records of historical floods. The results demonstrate that in the case of a 500-year rainfall intensity, the inundated area with a water depth excess of 300 mm covers up to 5.16 km2. In addition, four metro stations are inundated to a depth of over 300 mm.

scholarly journals Simulation of Low Impact Development (LID) Practices and Comparison with Conventional Drainage Solutions

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 640 ◽  
Author(s):  
Ioannis M. Kourtis ◽  
Vassilios A. Tsihrintzis ◽  
Evangelos Baltas
Keyword(s):  
Water Management ◽  
Design Process ◽  
Low Impact Development ◽  
Green Roofs ◽  
Storm Water ◽  
Management Model ◽  
Storm Events ◽  
Storm Water Management Model ◽  
Runoff Volume ◽  
Peak Runoff

The present work aims at quantifying the benefit of Low Impact Development (LID) practices in reducing peak runoff and runoff volume, and at comparing LID practices to conventional stormwater solutions. The hydrologic-hydraulic model used was the Storm Water Management Model (SWMM5.1). The LID practices modeled were: (i) Green roofs; and (ii) Permeable pavements. Each LID was tested independently and compared to two different conventional practices, i.e., sewer enlargement and detention pond design. Results showed that for small storm events LID practices are comparable to conventional measures, in reducing flooding. Overall, smaller storms should be included in the design process.

scholarly journals Verification of the combined sewage system simulation model based on the example of the city of Głogów

2018 ◽  
Vol 45 ◽  
pp. 00058 ◽  
Author(s):  
Ireneusz Nowogoński ◽  
Ewa Ogiołda
Keyword(s):  
Water Management ◽  
System Simulation ◽  
Field Studies ◽  
Storm Water ◽  
Management Model ◽  
Channel Depth ◽  
Storm Water Management Model ◽  
Sewage System ◽  
System Functioning ◽  
The City

Using SWMM 5.1 (Storm Water Management Model) software, a model of sewage system functioning in Głogów was developed. It was calibrated based on the results of field studies from the years 2011– 14, while the properness of its activity was verified for the results of measurements carried out during the period 1998–2000. The verification of the model showed acceptable discrepancies between the measured and simulated values of channel depth. Factors which caused differences were indicated and, on the basis of this, conclusions pertaining to further studies were formulated.

Estimation of sub-catchment area parameters for Storm Water Management Model (SWMM) using geo-informatics

2015 ◽  
Vol 31 (4) ◽  
pp. 462-476 ◽  
Author(s):  
Gaurav V. Jain ◽  
Ritesh Agrawal ◽  
R.J. Bhanderi ◽  
P. Jayaprasad ◽  
J.N. Patel ◽  
...  
Keyword(s):  
Water Management ◽  
Catchment Area ◽  
Storm Water ◽  
Management Model ◽  
Storm Water Management ◽  
Storm Water Management Model

scholarly journals Evaluasi Sistem Drainase Menggunakan Storm Water Management Model (SWMM) dalam Mencegah Genangan Air di Kota Tarakan

2020 ◽  
Vol 3 (2) ◽  
pp. 143-154
Author(s):  
Rahmat Faizal ◽  
Noerman Adi Prasetya ◽  
Zikri Alstony ◽  
Aditya Rahman
Keyword(s):  
Water Management ◽  
Urban Areas ◽  
Storm Water ◽  
Management Model ◽  
Economic Losses ◽  
Water Runoff ◽  
Runoff Simulation ◽  
Storm Water Management ◽  
Storm Water Management Model ◽  
Drainage Channels

Tarakan City experiences problems with standing water during the rainy season, especially in the west Tarakan sub-district which is the center of Tarakan. This puddle not only submerged settlements and offices but also shops and access roads that caused considerable economic losses. An evaluation was carried out by using the Storm Water Management Model (SWMM). SWMM is a rainfall-runoff simulation model used for simulating the quantity and quality of surface runoff from urban areas. Based on the evaluation using SWMM software, the drainage system in Tarakan, especially in Jalan Mulwarman has several inundated channels, namely channels 2, 3, 4, 5, 6, 7, 11, 12, 13, 14. This is influenced by the dimensions of the drainage channel that cannot accommodate existing water runoff and sediment thickness that covers the drainage channels so that the capacity is reduced, if it rains it will cause puddles at several points in Tarakan City. In order to deal with these puddles, it is necessary to change the dimensions of the channel and routinely dredge sediments that cover the drainage channels.

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