Schuylkill River Basin Post Hurricane Agnes Flood Damage Survey.

1972 ◽  
Author(s):  
GILBERT ASSOCIATES INC READING PA
Keyword(s):  
River Basin ◽  
Flood Damage ◽  
Damage Survey ◽  
Schuylkill River

scholarly journals Flood Inundation Assessment in the Low-Lying River Basin Considering Extreme Rainfall Impacts and Topographic Vulnerability

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 896
Author(s):  
Thanh Thu Nguyen ◽  
Makoto Nakatsugawa ◽  
Tomohito J. Yamada ◽  
Tsuyoshi Hoshino
Keyword(s):  
River Basin ◽  
Extreme Rainfall ◽  
Flood Damage ◽  
Water Levels ◽  
Flood Inundation ◽  
Inundation Area ◽  
Inundation Depth ◽  
Study Results ◽  
Inundation Duration ◽  
Short Time

This study aims to evaluate the change in flood inundation in the Chitose River basin (CRB), a tributary of the Ishikari River, considering the extreme rainfall impacts and topographic vulnerability. The changing impacts were assessed using a large-ensemble rainfall dataset with a high resolution of 5 km (d4PDF) as input data for the rainfall–runoff–inundation (RRI) model. Additionally, the prediction of time differences between the peak discharge in the Chitose River and peak water levels at the confluence point intersecting the Ishikari River were improved compared to the previous study. Results indicate that due to climatic changes, extreme river floods are expected to increase by 21–24% in the Ishikari River basin (IRB), while flood inundation is expected to be severe and higher in the CRB, with increases of 24.5, 46.5, and 13.8% for the inundation area, inundation volume, and peak inundation depth, respectively. Flood inundation is likely to occur in the CRB downstream area with a frequency of 90–100%. Additionally, the inundation duration is expected to increase by 5–10 h here. Moreover, the short time difference (0–10 h) is predicted to increase significantly in the CRB. This study provides useful information for policymakers to mitigate flood damage in vulnerable areas.

scholarly journals Identification of Flood-prone Areas using HEC-HMS and HEC-RAS, the Case of Ciberang River Basin, Lebak District of Banten Province

2021 ◽  
Vol 930 (1) ◽  
pp. 012082
Author(s):  
Ynaotou ◽  
R Jayadi ◽  
A P Rahardjo ◽  
D A Puspitosari
Keyword(s):  
River Basin ◽  
Human Life ◽  
Control Point ◽  
Flood Damage ◽  
Level Gauge ◽  
Flood Hazards ◽  
Channel Routing ◽  
Flood Prediction ◽  
Discharge Data ◽  
Flood Prone Areas

Abstract It is common practice that flood hydrograph simulations help to provide better flood prediction and flood damage reduction planning. These efforts require information on flood-prone areas identification from the hydrological and hydraulic analysis results. Historically, the Ciberang River Basin has experienced floods. Those floods cause the loss of human life and damage some houses along the river’s channels, especially in Lebak District, Banten Province, Indonesia. The main objective of this study is to identify flood-prone areas based on the simulation result of a hydrologic and hydraulic model of catchment response due to several extreme rainfall events using HEC-HMS and HEC-RAS software. Rainfall and discharge data measured at the Ciberang-Sabagi water level gauge on 10 January 2013 were used to calibrate hydrological watershed parameters. The hydraulics channel routing is started from the planned location of the Sabo dam to the downstream control point. The next stage was the simulation of rainfall-runoff transformation and 1D unsteady flow channel routing for the 2, 5, and 10-years floods return periods. The main result of this study is a flood hazards map that shows the spatial distribution of the area and inundation depth for each return period of the flood.

scholarly journals Assessment of Flood Hazard and Agriculture Damage Under Climate Change in the Bagmati River Basin of Nepal

2019 ◽  
Vol 8 (2) ◽  
pp. 55-69 ◽  
Author(s):  
Badri Bhakta Shrestha
Keyword(s):  
River Basin ◽  
Flood Risk ◽  
Damage Assessment ◽  
Growth Stage ◽  
Flood Hazard ◽  
Flood Damage ◽  
Flood Risk Management ◽  
Flood Inundation ◽  
Flood Hazards ◽  
Bagmati River

Assessment of flood hazard and damage is a prerequisite for flood risk management in the river basins. The mitigation plans for flood risk management are mostly evaluated in quantified terms as it is important in decision making process. Therefore, analysis of flood hazards and quantitative assessment of potential flood damage is very essential for mitigating and managing flood risk. This study focused on assessment of flood hazard and quantitative agricultural damage in the Bagmati River basin including Lal Bakaiya River basin of Nepal under climate change conditions. Flood hazards were simulated using Rainfall Runoff Inundation (RRI) model. MRI-AGCM3.2S precipitation outputs of present and future climate scenarios were used to simulate flood hazards, flood inundation depth, and duration. Flood damage was assessed in the agricultural sector, focusing on flood damage to rice crops. The flood damage assessment was conducted by defining flood damage to rice crops as a function of flood depth, duration, and growth stage of rice plants and using depth-duration-damage function curves for each growth stage of rice plants. The hazard simulation and damage assessment were conducted for 50- and 100-year return period cases. The results show that flood inundation area and agricultural damage area may increase in the future by 41.09 % and 39.05 % in the case of 50-year flood, while 44.98 % and 40.76 % in the case of 100-year flood. The sensitivity to changes in flood extent area and damage with the intensity of return period was also analyzed.

scholarly journals Long-Term Impacts of the 1997 Floods in the Morava River Basin

Geografie ◽  
2000 ◽  
Vol 105 (2) ◽  
pp. 141-154
Author(s):  
Antonín Vaishar ◽  
Pavlína Hlavinková ◽  
Karel Kirchner ◽  
Jan Lacina
Keyword(s):  
River Basin ◽  
Social System ◽  
Flood Damage ◽  
Flood Risks ◽  
Adverse Impacts ◽  
Technical Control ◽  
The Social ◽  
Morava River ◽  
Morava River Basin

In 1997 disastrous floods, unparalleled since meteorological and climatic measurements have been carried out, took place in the catchment of the Morava river and other Moravian rivers. The long-term impacts of the above-mentioned flood event on the landscape and society have been examined in four selected model areas with different natural and economic characteristics. Within the natural system, the long-term impacts include changes in riverbeds, landslides and changes in the biota. Within the social system, the most significant adverse impacts include the long-term damage to the psychical health of those affected by the flood. The main causes of the flood damage are connected with the formation of the settlement pattern during the period of industrialisation and urbanisation. The main methods of flood protection include the relocation of structures outside inundated areas, technical control and the adaptation to flood risks.

Impact assessment of reservoir operation for potential adaptation in the upper Chao Phraya River basin

2020 ◽  
Author(s):  
Saritha Padiyedath Gopalan ◽  
Naota Hanasaki
Keyword(s):  
River Basin ◽  
Reservoir Operation ◽  
Catchment Area ◽  
Flood Damage ◽  
Baseline Scenario ◽  
Peak Reduction ◽  
Future Scenario ◽  
Flood Peak ◽  
Chao Phraya River ◽  
The Impact

<p>The increased flood occurrence in the lower reaches of Chao Phraya River Basin, a major river system of Thailand, has caused tremendous economic as well as agricultural losses in the past. Reservoir operation is one of the most influential factors that can alleviate flood damage by controlling the natural flow. Hence, this study examines the effect of reservoir operation on the flood peak reduction for the baseline (1990-1999) as well as future (2090-2099) scenarios under representative concentration pathway (RCP) 6 emission scenario using the H08 global hydrological model with reservoir operation module. The main objectives of the study are; (i) analyze the effect of two largest existing reservoirs of Bhumibol and Sirikit at Nakhon Sawan (catchment area: 109973 km<sup>2</sup>), where major tributaries of the Chao Phraya River join together, and (ii) analyze the effect of a hypothetical dam, located in the upper reaches of Yom River (one of the tributaries of Chao Phraya River), at Sukhothai (catchment area: 12769 km<sup>2</sup>) and Nakhon Sawan for the baseline and future scenarios. For this purpose, the H08 model was calibrated at Nakhon Sawan and validated at 26 gauging stations within the catchment with an average daily and monthly Nash-Sutcliffe efficiency values of 50 and 66% respectively. The results of baseline scenario simulation revealed that the two major reservoirs cause an enormous reduction in the daily peak discharge by 21-52% at Nakhon Sawan, whereas the impact of the hypothetical dam was negligible (3-14%) due to its reduced storage capacity compared with the major reservoirs. On the other hand, the proposed hypothetical dam exhibited significant potential for the flood peak reduction by 15-53% at Sukhothai. Therefore, it can be envisaged that the hypothetical dam could reduce flood damage at the lower reaches of Yom River where flooding is regular due to gentle slope. Further, the simulated change in daily peak discharge without the reservoir effect for the future scenario was -0.55 to 5.78 and -0.72 to 7.68 times higher at Nakhon Sawan and Sukhothai respectively compared with the baseline scenario. The impact of two existing as well the hypothetical reservoirs on flood peak reduction was similar compared with the baseline scenario at Nakhon Sawan as well as at Sukhothai. This further indicates that the changes in discharge due to climate change are larger than those achieved by the reservoir operations for the future scenario even though the simulated discharge highly depends on which general circulation model was used as input.</p>

Flood damage assessment in the Pampanga river basin of the Philippines

2015 ◽  
Vol 9 (4) ◽  
pp. 355-369 ◽  
Author(s):  
B.B. Shrestha ◽  
T. Okazumi ◽  
M. Miyamoto ◽  
H. Sawano
Keyword(s):  
River Basin ◽  
Damage Assessment ◽  
Flood Damage ◽  
The Philippines ◽  
Flood Damage Assessment

Evaluation of Resilience in Anyang River Basin for Flood Damage Mitigation

2013 ◽  
Vol 13 (2) ◽  
pp. 291-298 ◽  
Author(s):  
Lim Yeol Lee ◽  
Soo Jun Kim ◽  
Yon Soo Kim ◽  
Hung Soo Kim
Keyword(s):  
River Basin ◽  
Flood Damage ◽  
Damage Mitigation
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