MONITORING OF FLOODS ON SMALL AND MEDIUM-SIZED RIVERS BY AICHI PREFECTURE AND THE CITY OF GAMAGORI, USING SPECIALIZED WATER LEVEL MEASURING DEVICES FOR THE OBSERVATION OF FLOODS

2021 ◽  
Vol 77 (1) ◽  
pp. 92-97
Author(s):  
Yusuke TAKAHASHI ◽  
Koichiro KAWAKAMI ◽  
Nobuhisa SUZUKI
Keyword(s):  
Water Level ◽  
Measuring Devices ◽  
Aichi Prefecture ◽  
The City

scholarly journals AN ARCHITECTURAL ADAPTATION STRATEGY FOR THE DYNAMICS OF THE KAHAYAN RIVER’S WATER LEVEL AT KAMPUNG PAHANDUT, PALANGKA RAYA CITY

2017 ◽  
Vol 1 (04) ◽  
pp. 379-398
Author(s):  
Alifi Diptya Nidikara; Giosia Pele Widjaja
Keyword(s):  
Water Level ◽  
River Water ◽  
Adaptation Strategy ◽  
Adaptation Strategies ◽  
Activity Data ◽  
Starting Point ◽  
Data Collection Technique ◽  
High Degree ◽  
The City ◽  
Dry And Rainy Seasons

Abstract- Kalimantan (Borneo) is famous as the island of a Pulau Seribu due to the large number of rivers that run across its cities. One of the longest is the Kahayan river that flows through the city of Palangka Raya. The river as an important aspect in Kalimantan people’s life has made it the starting point for the embryo of a city in the form of river side dwellings that keeps on developing amidst the dynamics of the Kahayan river that undergoes a high degree of change in terms of water level during the dry and rainy seasons. The issue that arises is the addition and loss of space due to the changes of the river water level. The purpose of this research is to describe the adaptation strategies used by the writer in Kampung Pahandut that is unique when compared other kampongs (villages) due to its condition of having dry and flooded streets in the dwelling area. This research is qualitative in nature, employing the narrative descriptive method. The data collection technique uses purposive sampling to collect the physical and activity data. The physical and activity data were gained through a survey of the research object as well as picture taking, field observation, as well as the medium ofinterviews conducted with the Kampung Pahandut villagers. The data was then processed by classifying the numerous changes that had happened in both physical and activity-related terms as well as analyzing and concluding the adaptation strategies. It was found that in Kampung Pahandut there were both physical and activity-related changes as efforts to accommodate its people to enable them to survive the dry and flooding condition due to the changes of the river water level. Within these efforts there was also architectural adaptation based on the study consisting of three adaptation strategies, namely: being adjustable, refittable, and movable. Keywords: architectural adaptation, changes in water level, Kahayan River, Kampung Pahandut

scholarly journals Study of a self-scouring outfall in Lake Ontario by physical and computer modeling

2021 ◽  
Author(s):  
Shanil Persaud
Keyword(s):  
Water Level ◽  
Wave Height ◽  
Lake Ontario ◽  
High Water ◽  
Wave Direction ◽  
Computational Fluid Dynamics Cfd ◽  
Run Up ◽  
Bodies Of Water ◽  
The City ◽  
Better Than

Coastal outfalls that discharge storm water and/or sewerage into bodies of water are part of a collection of critical municipal infrastructure that must be kept functioning properly at all times so as to avoid expensive frequent maintenance and environmental problems. The Green Road costal outfall pipe, located in an embayment on the shores of Lake Ontario in the City of Hamilton, is subject to sediment plugging by waves that transport sediments from an eroding bluff to the east into the study outfall pipe, thereby reducing its hydraulic discharge capacity. To alleviate the problem of outfall blockage, a 1:15 scale undistorted physical (hydraulic) model ws designed and built at the National Water Research Institute (NWRI) to study the performance of a self-scouring outfall (SSO), a structure that utilizes combination of wave run-up slopes, converging walls and steep outlet channels to promote self-cleansing with respect to sediment to prevent direct sediment intrusion into the outfall pipe. A commercial computational fluid dynamics (CFD) model FLUENT, was used to study the internal hydrodynamics of the complex outfall structure. Results from the physical model determined that the performance of the SSO is a function of wave direction, water level, wave height and period, as well as sediment characteristics. Model results indicate that a SSO built on the shores of Lake Ontario would be able to scour a greater amount of sediment in conjunction with a high water level and wave height of 75.07 m and 1.95 m, respectively. A modified SSO design reduced sedimentation on the wave run-up slopes by more than 25% and was 100% effective in preventing direct sediment intrusion. The structure performed exceptionally better than a traditional outfall in terms of sediment handling. Therefore, it is expected a municipality can save a great deal of money on cleanouts by installing a self-scouring outfall to prevent outfall plugging.

A comprehensive approach of hydrological issues related to ground water using GIS in the Hindu holy city of Gaya, India

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tarun Kumar Lohani ◽  
Melkamu Teshome Ayana ◽  
Abdella Kemal Mohammed ◽  
Mohammad Shabaz ◽  
Gaurav Dhiman ◽  
...  
Keyword(s):  
Ground Water ◽  
Water Level ◽  
Specific Capacity ◽  
Research Work ◽  
Ground Level ◽  
Content Type ◽  
The People ◽  
Static Water ◽  
The City ◽  
Holy City

Purpose Gaya, the holy city of Hindus, Buddhists and Jains, is facing an acute shortage of potable water. Although the city is blessed with some static and dynamic water bodies all around the region, they do not fulfill the requirement of millions of public either inhabitants of the area or tourists or pilgrims flocking every day. Countless crowds, congested roads, swarming pedestrians, innumerable vehicles moving throughout the day and night have made the city into a non-livable one. The present status of surface water is a mere nightmare to the requirements of the people. Due to which, massive ground water pumping mostly illegally has added a grid in addition to the other socio-economic issues. Design/methodology/approach To focus on such problem, the ground water of the region was studied thoroughly by calculating the depth of water level, discharge, pre-and post-monsoon water table and specifically the storativity in ten different locations. Some data were acquired, others were assessed, and few are calculated to provide an overall view of the ground water scenario. Findings After a long and tedious field study, it was finally established from that static water level ranges from 2.45 to 26.59 m, below ground level (bgl), discharge varies from 3.21 m3/day to 109.32 m3/day. Post pumping drawdown falls between 0.93 m and 16.59 m, whereas the specific capacity lies in between 0.96 and 7.78 m3/hr/m. Transmissivity, which is a key objective to assess ground water potential ranges from 109.8 to 168.86 m2/day. Originality/value This research work is original.

scholarly journals LANDSLIDE IN NACHTERSTEDT OF GERMANY

2017 ◽  
Vol 43 (3) ◽  
pp. 1267 ◽  
Author(s):  
E. Moraiti ◽  
B. Christaras ◽  
R. Brauer
Keyword(s):  
Water Level ◽  
Coal Mine ◽  
Groundwater Level ◽  
Heavy Rain ◽  
Underground Coal Mine ◽  
North East ◽  
Recreation Area ◽  
The City

On July 18, 2009, an important landslide occurred in Nachterstedt City toward to the artificial Concordia Lake, which was created, in 1994, at the place of an old coal mine, at the edge of the city. The area is located to North-East of Harz, between the cities of Aschersleben and Quedlingburg. An underground coal mine is responsible for this damage which caused the damage of a privet house and a big building. Three people were also died. The mine apparently closed in 1991 whereupon it was converted into a recreation area. The landslide was caused by the increase of the groundwater level, in the coal mine, after a heavy rain, in relation to the water level of the lake.

scholarly journals Urban flood modelling in Qiqihar city based on MIKE flood

2020 ◽  
Vol 383 ◽  
pp. 185-192
Author(s):  
Jiahong Liu ◽  
Zejin Li ◽  
Weiwei Shao ◽  
Dianyi Yan ◽  
Chao Mei
Keyword(s):  
Water Level ◽  
River Basin ◽  
Return Period ◽  
Flood Risk ◽  
Main Stream ◽  
Urban Flood ◽  
Songhua River ◽  
Mike Flood ◽  
The City ◽  
Flood Diversion

Abstract. Qiqihar is a significant city on the Nen River in China, which is the main stream of the Songhua River basin. The length of the return period of Qiqihar's flood control design standard is fifty years. If a 100-year flood event happened, Qiqihar would face the risk of a burst levee. To quantitatively evaluate flood risk to the city from a burst levee or proactive flood diversion, a model for analysing flood submergence from a burst levee in the City of Qiqihar is established based on MIKE Flood. The model integrates one- and two-dimensional hydrodynamic models to implement coupled simulation. The terrain data are from city elevation data on a scale of 1:10 000. Following local modifications made based on survey data, such as on levees, roads, and buildings, a 20 m × 20 m grid of terrain data was formed as the terrain input of the model. The model simulates the water level of Nen River and the flood path, submerged time/depth/area, and duration in floodplain under three scenarios: baseline, proactive downstream flood diversion, and an upstream levee burst under a flood with a one hundred-year return period. Proactive downstream flood diversion can reduce the maximum water level by 0.068 m and correspondingly decrease peak flood flow by 1120 m3 s−1. These results provide basic information to support urban flood risk analysis and flood dispatching and management across the whole river basin.

Improving the method for monitoring the piezometric level of underground water in production wells of the Kamchatka Territory

2021 ◽  
pp. 16-19
Author(s):  
Б.А. Опрышко ◽  
В.А. Швецов ◽  
О.А. Белавина
Keyword(s):  
Water Level ◽  
Experimental Studies ◽  
Underground Water ◽  
Hydrodynamic Regime ◽  
Piezometric Level ◽  
Automated Control ◽  
Measuring Devices ◽  
Production Wells ◽  
Pressure Water ◽  
Underground Water Level

Приведен опыт в области контроля гидродинамического режима подземных напорных вод при их эксплуатации. Для измерения и корректировки результатов измерений пьезометрического уровня подземных вод в самоизливающихся скважинах использовали автономные автоматизированные измерительные устройства. Экспериментальные исследования проводили на наблюдательной скважине № 1 Мильковского месторождения подземных питьевых вод (Амшарикский участок). Результаты исследований показали, что максимальный уровень подземных вод соответствует периоду таяния снежного покрова (май–июнь). Минимальный уровень подземных вод наблюдали в апреле. Отмечено, что годовой график изменения уровня воды в скважине № 1 не соответствует полностью ни одному из типовых графиков, что свидетельствует о необходимости организации автоматизированного контроля гидродинамического режима данного месторождения подземных вод с целью защиты его от истощения и загрязнения. The experience in monitoring the hydrodynamic regime of underground pressure water in the process of exploitation is presented. To measure and correct the results of measurements of the piezometric level of underground water in blowing wells, self-contained automated measuring devices were used. The experimental studies were carried out at observation well No. 1 of the Mil’kovskoe deposit of underground drinking water (Amsharikski site). The research results showed that the maximum underground water level corresponded to the period of snow cover melting (May – June). The minimum underground water level was observed in April. It is noted that the annual schedule of the water level changes in well No. 1 does not fully comply with any of the standard schedules suggesting the need to establish automated control of the hydrodynamic regime of this underground water deposit in order to protect it from depletion and pollution.

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