THE IMPORTANCE OF A THREE-WATERS HYDRAULIC MODELLING STRATEGY FOR A MODERN WATER AUTHORITY

2018 ◽  
Vol 8 (1) ◽  
pp. 47 ◽  
Author(s):  
R. BISWAS RAHUL ◽  
Keyword(s):  
Hydraulic Modelling

Flood alleviation in a heavily urbanized area – Kai Tak Nullah, Hong Kong

2012 ◽  
Vol 7 (4) ◽  
Author(s):  
Alan K. L. Chan ◽  
Colin K. C. Wong ◽  
Robin H. N. Lee ◽  
Mike W. H. Cho
Keyword(s):  
Hong Kong ◽  
Public Engagement ◽  
Urban Areas ◽  
Hydraulic Modelling ◽  
The Public ◽  
Design Considerations ◽  
Urbanized Area ◽  
Development Area ◽  
The Government ◽  
Exercise Design

The existing Kai Tak Nullah flows from Po Kong Village Road along Choi Hung Road and Tung Tau Estate into Kai Tak Development Area before discharging into the Victoria Harbour. Historically its upstream has been subject to flooding under storm conditions and this has had serious repercussions for the adjacent urban areas. A study has been commissioned by the Drainage Services Department of the Government of the Hong Kong Special Administrative Region (HKSAR), China to investigate the flood mechanisms and to provide flood alleviation measures by improving the capacity of the Kai Tak Nullah. In addition to flood alleviation, there is a strong public aspiration to rehabilitate the Kai Tak Nullah by a comparatively natural river design. Since the Kai Tak Nullah is located within a heavily urbanized area, traffic and environmental impacts are also highly concerned. The final flood alleviation scheme has thus had to strike a balance among the aforesaid factors with assistance from the hydraulic modelling utilizing InfoWorks Collection Systems (CS) software. This paper presents the public engagement exercise, design considerations, methodologies, and recommendations regarding the reconstruction and rehabilitation of the Kai Tak Nullah.

Hydraulic modelling

1982 ◽  
Vol 56 (3-4) ◽  
pp. 390-391
Author(s):  
L. Calembert
Keyword(s):  
Hydraulic Modelling

Hydraulic modelling of oil spill through submerged orifices in damaged ship hulls

2017 ◽  
Vol 130 ◽  
pp. 385-397 ◽  
Author(s):  
Monika Kollo ◽  
Janek Laanearu ◽  
Kristjan Tabri
Keyword(s):  
Oil Spill ◽  
Hydraulic Modelling ◽  
Ship Hulls ◽  
Damaged Ship

scholarly journals Using 2D-hydraulic modelling together with SfM and YouTube to estimate peak discharge

2021 ◽  
Vol 12 (3) ◽  
pp. 01-26
Author(s):  
Andy Giler-Ormaza ◽  
◽  
Jonathan L. Carrivick ◽  
Mark W. Smith ◽  
◽  
...  
Keyword(s):  
Peak Discharge ◽  
Hydraulic Modelling

scholarly journals The Hydraulic Modelling on Sediments Ponds in Binanga Aron River, North Sumatera Indonesia

2019 ◽  
Vol 8 (2) ◽  
pp. 392-404
Keyword(s):  
Water Flow ◽  
Water Availability ◽  
Soil Mechanics ◽  
Water Source ◽  
Water Sources ◽  
Hydraulic Modelling ◽  
Sediment Storage ◽  
Irrigation Area ◽  
Water Quality Status ◽  
Primary Channel

The development of dams and sediments ponds which is the hydrological planning to improve the aspect of irrigation, river engineering, foundations, soil mechanics, environmental engineering, hydrology and hydraulics. The management difficulty for a decision maker of environmental impacts which is the river's condition does not change for the better in direct response to reduction in nutrient concentration. The aims of this study to evaluate the design of reservoirs building and analysing the water flow and volume of sediment storage in the Binanga Aron River, Samosir, North Sumatera Indonesia. The hydraulic modelling on sediments ponds will ensuring the availability of sufficient volume of water, river flows and water quality status. The primary channel building is equipped with a door to prevent the rinsing water flow back to the primary channel and prevent the entry of rinsing water containing sediment into the canal. Then, the insufficient water availability from the river that is used as a water source in the irrigation area, then the irrigation area is still possible to supply water from nearby water sources. From the result, the volume of water recorded 1,977 ltr/s/ha with simultaneously delivery system. It is necessary to adjust the position of the dam, where the channel flow depth in the sedimentary bag building at least 0.236 m, the discharge ranges from 0.078 - 0.263 m3 /sec. The water availability planned of water sources into artificial reservoirs in the Binanga Aron River to maintain the water supply

scholarly journals Estimating uncertainties in hydraulicallymodelled rating curves for discharge time series assessment

2018 ◽  
Vol 40 ◽  
pp. 06013
Author(s):  
Valentin Mansanarez ◽  
Ida K. Westerberg ◽  
Steve W. Lyon ◽  
Norris Lam
Keyword(s):  
Time Series ◽  
Hydraulic Model ◽  
Observation Data ◽  
Rating Curve ◽  
Hydraulic Modelling ◽  
Discharge Time ◽  
High Flows ◽  
Rating Curves ◽  
Hydrometric Station ◽  
The Impact

Establishing a reliable stage-discharge (SD) rating curve for calculating discharge at a hydrological gauging station normally takes years of data collection. Estimation of high flows is particularly difficult as they occur rarely and are often difficult to gauge in practice. At a minimum, hydraulicallymodelled rating curves could be derived with as few as two concurrent SD and water-surface slope measurements at different flow conditions. This means that a reliable rating curve can, potentially, be developed much faster via hydraulic modelling than using a traditional rating curve approach based on numerous stage-discharge gaugings. In this study, we use an uncertainty framework based on Bayesian inference and hydraulic modelling for developing SD rating curves and estimating their uncertainties. The framework incorporates information from both the hydraulic configuration (bed slope, roughness, vegetation) using hydraulic modelling and the information available in the SD observation data (gaugings). Discharge time series are estimated by propagating stage records through the posterior rating curve results. Here we apply this novel framework to a Swedish hydrometric station, accounting for uncertainties in the gaugings and the parameters of the hydraulic model. The aim of this study was to assess the impact of using only three gaugings for calibrating the hydraulic model on resultant uncertainty estimations within our framework. The results were compared to prior knowledge, discharge measurements and official discharge estimations and showed the potential of hydraulically-modelled rating curves for assessing uncertainty at high and medium flows, while uncertainty at low flows remained high. Uncertainty results estimated using only three gaugings for the studied site were smaller than ±15% for medium and high flows and reduced the prior uncertainty by a factor of ten on average and were estimated with only 3 gaugings.

Hydraulic modelling of extreme flood event of semi-arid river basin

2021 ◽  
Author(s):  
Mohamedmaroof Shaikh ◽  
Sanjaykumar Yadav ◽  
Vivek Manekar
Keyword(s):  
Cross Sections ◽  
Management Strategy ◽  
Retaining Wall ◽  
Hydraulic Model ◽  
Flood Event ◽  
Railway Bridge ◽  
Hydraulic Modelling ◽  
One Dimensional ◽  
Extreme Flood ◽  
High Flood

<p>Floods are among the severe weather disasters that cause catastrophic damage to surroundings and adversely impact populations. This study aims to create a one-dimensional (1D) hydraulic model using HEC-RAS for the Rel River in Banaskantha, Gujarat, India. The model has been developed for the extreme flood event of July 2017. A total of hundred cross-sections have been used as geometric data. The peak discharge of 3355 m<sup>3</sup>/s and the river slope has been applied as upstream and downstream boundary conditions. The model has been calibrated and validated using observed water depth at Railway bridge and Highway bridge. Critical cross-sections have been identified using the 1D hydraulic model. Eight out of the hundred cross-sections were safe for a flood discharge of 3355 m<sup>3</sup>/s. The villages at high flood risk are identified for this discharge. To mitigating floods, the construction of a retaining wall or levees is recommended to protect these villages. This study can help a disaster management strategy for the cities and town in the River’s vicinity.</p>

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