ANALYSIS OF THE FLOOD CONTROL EFFECT BY DAMS OF KINUGAWA RIVER IN 2015.09 KANTO-TOHOKU HEAVY RAINFALL

2018 ◽  
Vol 74 (4) ◽  
pp. I_1507-I_1512
Author(s):  
Atsuhiko KONJA ◽  
Yosuke NAKAMURA ◽  
Shiori ABE ◽  
Takahiro SAYAMA ◽  
Yasutaka WAKAZUKI
Keyword(s):  
Heavy Rainfall ◽  
Flood Control ◽  
Control Effect

Study on Urban Flood Control and Drainage in Beijing

2014 ◽  
Vol 1065-1069 ◽  
pp. 2381-2385
Author(s):  
Sen Guo Zhan ◽  
Bao Hui Men ◽  
Jia Jie Wu ◽  
Zheng Da Duan
Keyword(s):  
Heavy Rainfall ◽  
Flood Control ◽  
The Philippines ◽  
City Government ◽  
Urban Flood ◽  
The City ◽  
New Look

On 21 July 2012, a huge thunderstorm hit Beijing, prompting the city government to act immediately to deal with the emergency. Yet great losses were caused, exposing problems about urban flood control and drainage, and making people take a new look at them. It is not uncommon for a rainfall of such a degree to happen in Asia. Comparatively speaking, however, unlike in Beijing, fewer damages are caused in Taiwan, Japan and the Philippines given the same situation. In this article, therefore, the problems arising after a heavy rainfall and their solutions will be discussed.

scholarly journals Foundational Study on Water Use and Flood Control Effect by the Large Scale Reservoir

2005 ◽  
Vol 49 ◽  
pp. 457-462 ◽  
Author(s):  
Taichi TEBAKARI ◽  
Kazuhiko FUKAMI ◽  
Chanchai SUVANPIMOL ◽  
Mamoru MIYAMOTO ◽  
Tadashi YAMADA
Keyword(s):  
Water Use ◽  
Flood Control ◽  
Large Scale ◽  
Control Effect

An Experimental Study on Flood Control Capability of Dry Dams Constructed in a Series

2015 ◽  
Vol 10 (3) ◽  
pp. 467-474 ◽  
Author(s):  
Hideo Oshikawa ◽  
◽  
Yuka Mito ◽  
Toshimitsu Komatsu ◽  
◽  
...  
Keyword(s):  
Experimental Study ◽  
Flood Control ◽  
Laboratory Experiments ◽  
Slide Gate ◽  
Reservoir Capacity ◽  
Control Effect ◽  
Flood Disasters ◽  
Control Capability ◽  
Cascade Method ◽  
Large Dam

The new Cascade concept of flood control is demonstrated in laboratory experiments in which upstream dams in a series of dams constructed along a river overflow from emergency spillways while the final downstream dam is required only to use its normal spillway and never do its emergency spillway. Multiple small dry dams lacking a slide gate in a normal spillway should be constructed in a series rather than as a single large dam to prevent flood disasters and to preserve the natural environment. Dry dams for flood control have recently been reviewed, planned, and built at sites in Japan. In this paper, we compare the Cascade method to conventional flood control in laboratory experiments conducted based on the condition that dams all have the same reservoir capacity. Results have shown that the Cascade method using multiple dry dams was considerably more effective than conventional flood control. Furthermore, the additional flood control effect of a dry dam equipped with closable and openable gate in its regular spillway was experimentally confirmed although there is no such kind of the gate on an ordinary dry dam. This new dry dam should be constructed in the river’s upper reaches away from the existing downstream storage dam needing still more its capacity for water utilization, thus ensuring the amount of water available by closing the regular spillway after the dry dam is filled to capacity. The flood control capacity of dams including the new dry dam is stronger than that of an ordinary storage dam thanks to the dry dam’s storage function.

Assessing the flood control effect of the existing and projected reservoirs in the middle amur basin by physically—based hydrological models

2015 ◽  
Vol 42 (5) ◽  
pp. 580-593 ◽  
Author(s):  
Yu. G. Motovilov ◽  
V. I. Danilov-Danilyan ◽  
E. V. Dod ◽  
A. S. Kalugin
Keyword(s):  
Flood Control ◽  
Hydrological Models ◽  
Amur Basin ◽  
Control Effect ◽  
Physically Based

Lessons Learned from Tokai Heavy Rainfall

2007 ◽  
Vol 2 (1) ◽  
pp. 50-53 ◽  
Author(s):  
Akihiro Tominaga ◽  
Keyword(s):  
Control Systems ◽  
Heavy Rainfall ◽  
Flood Control ◽  
Lessons Learned ◽  
Flood Disaster ◽  
Drainage Basins ◽  
Urban Flood ◽  
Wide Range ◽  
The Many ◽  
Heavy Damage

In September 2000, heavy rainfall in the Tokai district flooded Nagoya and its surroundings, wreaking heavy damage. This flood showed typical aspects of urban flood disaster. The damage expanded in a wide range and paralyzed city operations. This revealed the many problems of complex flood control systems in urbanized drainage basins and evacuation and rescue systems. The cases of the Shinkawa and Tenpaku Rivers are discussed below as typical urban flood problems.

Heavy rainfall and flood risk assessment method considering the future climate change

2020 ◽  
Author(s):  
Tomohito Yamada ◽  
Tsuyoshi Hoshino
Keyword(s):  
Heavy Rainfall ◽  
Flood Control ◽  
Climate Model ◽  
Model Simulation ◽  
Assessment Method ◽  
Future Climate ◽  
Future Climate Change ◽  
Observation Data ◽  
Risk Assessment Method ◽  
The Future

<p>Existing flood control plans have been implemented based on rainfall estimated from observation data. However, we have data from the past several decades. Thus, it is not enough to project future extreme events from existing observation data. Therefore, Japan has been created huge ensemble of high-resolution climate model simulation based on the laws of physics. The data consist of past and future climate situations (past climate: total 3,000 years, 4 K warmer climate: total 5,400 years). It has enabled to quantitatively evaluate the probability of heavy rainfall and flooding on the future 4K-warmed earth.</p><p>Moreover, we apply the statistical theory of extreme value to evaluate the probability of heavy rainfall and flooding in the future. The results from statistical method is equivalent to the results from the huge ensemble data from climate model. It supports Japanese governments in formulating and carrying out their adaptation plans.</p>

scholarly journals Typhoon Nina and the August 1975 Flood over Central China

2017 ◽  
Vol 18 (2) ◽  
pp. 451-472 ◽  
Author(s):  
Long Yang ◽  
Maofeng Liu ◽  
James A. Smith ◽  
Fuqiang Tian
Keyword(s):  
Water Vapor ◽  
Heavy Rainfall ◽  
Flood Control ◽  
Vertical Motion ◽  
Extreme Rainfall ◽  
Vapor Transport ◽  
Central China ◽  
Water Vapor Transport ◽  
Back Trajectory ◽  
Central Feature

Abstract The August 1975 flood in central China was one of the most destructive floods in history. Catastrophic flooding was the product of extreme rainfall from Typhoon Nina over a 3-day period from 5 to 7 August 1975. Despite the prominence of the August 1975 flood, relatively little is known about the evolution of rainfall responsible for the flood. Details of extreme rainfall and flooding for the August 1975 event in central China are examined based on empirical analyses of rainfall and streamflow measurements and based on downscaling simulations using the Weather Research and Forecasting (WRF) Model, driven by Twentieth Century Reanalysis (20CR) fields. Key hydrometeorological features of the flood event are placed in a climatological context through hydroclimatological analyses of 20CR fields. Results point to the complex evolution of rainfall over the 3-day period with distinctive periods of storm structure controlling rainfall distribution in the flood region. Blocking plays a central role in controlling anomalous storm motion of Typhoon Nina and extreme duration of heavy rainfall. Interaction of Typhoon Nina with a second tropical depression played a central role in creating a zone of anomalously large water vapor transport, a central feature of heavy rainfall during the critical storm period on 7 August. Analyses based on the quasigeostrophic omega equation identified the predominant role of warm air advection for synoptic-scale vertical motion. Back-trajectory analyses using a Lagrangian parcel tracking algorithm are used to assess and quantify water vapor transport for the flood. The analytical framework developed in this study is designed to improve hydrometeorological approaches for flood-control design.

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