scholarly journals Design for an “engineered sinkhole” to improve, recharge and reduce evapotranspiration in an upstream flood control structure

Author(s):  
Y. Leventeli ◽  
T. Halihan ◽  
M. Dailey ◽  
K. Hurt ◽  
W. Kellogg
2010 ◽  
Vol 58 (1) ◽  
pp. 117-140 ◽  
Author(s):  
Shiang-Jen Wu ◽  
Jinn-Chuang Yang ◽  
Yeou-Koung Tung

UKaRsT ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 174
Author(s):  
Prabowo Prabowo ◽  
Gusfan Halik ◽  
Entin Hidayah ◽  
Taqiudin Haq

Flood disasters frequently occurred in Jember Regency, East Java. It is usually caused by the overflow of the Tanggul River in the rainy season, especially in the downstream area. Flood control could be done by building dams, embankments, shortcuts, and other technical flood protections. Meanwhile, mitigation efforts such as developing thematic maps of flood inundation need to be done to minimize losses caused by the flood. This study aims to design a flood mitigation strategy technically. The flood control structure was proposed by designing a shortcut in Kali Tanggul. Its performance was analyzed to reduce flood inundation in the Tanggul watershed. The flood inundation modeling was carried out using spatial analysis using ArcGIS 10.1 and hydraulic analysis using HECRAS 5.0.3. Flood inundation results were compared with the Tanggul watershed flood map developed by UPT PUSDA Lumajang. Based on modeling results, flood control using shortcuts is considered an effective strategy for flood mitigation. It was indicated by the reduction of flood inundation distributions, flood inundation height, and flood-affected areas. The results show that the flood height decrease 0.47 up to 0.56 m


2019 ◽  
Vol 4 (1) ◽  
pp. 34-39
Author(s):  
Meliyana Meliyana ◽  
Ichsan Syahputra ◽  
Andhika Mahbengi ◽  
Cut Rahmawati

Krueng Tripa is located in 2 (two) regencies, namely Gayo Lues and Nagan Raya with total area of catchmen area is ± 3,472.95 Km2. The rainfall that affects Krueng Tripa watershed ranges from 493 mm up to 2,197 mm per year. the high rainfall effect on flood events that have caused adverse impacts on the lives of people along the river. The purpose of this study is to estimate peak flood discharge and to propose  flood control management. Analysis flood discharge using with Synthetic Unit Hydrograph (HSS) Soil Conservation Service (SCS).  The rainfall data test show that the rainfall distribution tend to follow the Gumbel, with the rate of design rainfall for 25-year return period to be 154,49 mm/day. Analysis of river flood discharge Krueng Tripa obtained Q25 = 3151,742 m3/s. The control flood recommendation of Krueng Tripa can be accomplished is a dam as flood control structure at the upstream of the river. Result of level pool routing obtained outflow hydrographs  2762,854 m3/s, resulting in a discharge reduction of 388.88 m3/s.


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