scholarly journals Modeling of Flooding of Settlements During the Spring Flood

2021 ◽  
pp. 63-72
Author(s):  
Anna Klikunova ◽  
Tatyana Dyakonova ◽  
Ekaterina Agafonnikova ◽  
Ilya Makoveev ◽  
Mariya Kornaukhova ◽  
...  
Keyword(s):  
Spatial Data ◽  
Negative Impact ◽  
Parallel Implementation ◽  
Residential Buildings ◽  
Water Levels ◽  
Water Dynamics ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Flood Water ◽  
River Bed

The problem of flooding of territories with flood waters for settlements of the Volgograd region is considered. A numerical model of flood water dynamics is constructed, taking into account the topography of the terrain. The simulation is based on two-dimensional shallow water equations. For computational experiments, a parallel implementation of the numerical scheme CSPH-TVD for NVIDIA graphics accelerators with CUDA technology is used. The digital model of the river-bed and floodplain relief is based on spatial data SRTM3 and SRTMGL, topographic maps of the area, longitudinal profiles of rivers. The water flow rates for the Buzuluk and Perevozinka rivers are determined and a hydrograph of the Volga hydroelectric power station is constructed for the given probabilities of exceeding the water level. Flood maps were obtained for the following localities: Novoannisky, Berezovka 1st, kh. Vyazovka. The maximum values of the depths for 1 %, 3 %, 5 %, 10 %, 25 % and 50 % of water security are presented. An analysis of the flood situation was carried out and appropriate engineering and protective measures for settlements were proposed. At maximum flood water levels, residential buildings of kh. Berezovka 1-I are not subject to flooding. In order to minimize the negative impact for the city of Novoanninsky, it is proposed to carry out timely clearing of the river-bed of the Perevozinka river from congestion. To protect from flooding ch. Vyazovka it is recommended to use diversion dyke.

scholarly journals Influence of digital technologies on the quality of life by modelling the risk of flooding of territories by flood waters

2021 ◽  
Vol 2094 (2) ◽  
pp. 022061
Author(s):  
Ya V Grebnev ◽  
A K Moskalev ◽  
D I Shagidulina
Keyword(s):  
Quality Of Life ◽  
Power Plants ◽  
Residential Buildings ◽  
Water Levels ◽  
System Modelling ◽  
Hydroelectric Power ◽  
Negative Consequences ◽  
Hydroelectric Power Plants ◽  
Modelling Environment

Abstract Every year, there are many floods on the planet, which have a significant impact on ensuring the safety of people and affects the quality of life. The development of modern modelling technologies makes it possible to predict various scenarios for the development of the situation and reduce the likelihood of negative consequences. This issue is especially relevant for settlements located in the immediate vicinity of hydroelectric power plants, since by regulating discharge costs from hydroelectric power plants, it is possible to safely pass flood waters avoiding flooding of residential buildings and infrastructure, but this requires knowing the flooding zones at different water levels and discharge costs. This paper presents the results of solving the problem of modelling the dynamics of flood waters within the boundaries of the settlement of Krasnoyarsk. To calculate the flooded areas, the TUFLOW program was used in the Surface-water Modelling System modelling environment, as well as neural network forecasting using the NeuroPro software product. The simulation results made it possible to predict local flooding of the settlement during the flood of 2021 and take preventive measures to reduce the risk of flooding.

scholarly journals How the fluctuations of water levels affect populations of invasive bivalve Corbicula fluminea (Müller, 1774) in a Neotropical reservoir?

2015 ◽  
Vol 75 (1) ◽  
pp. 135-143 ◽  
Author(s):  
LRP. Paschoal ◽  
DP. Andrade ◽  
G. Darrigran
Keyword(s):  
Population Structure ◽  
Spatial Distribution ◽  
Water Column ◽  
Shell Length ◽  
Native Species ◽  
Corbicula Fluminea ◽  
Water Levels ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Significant Difference

Corbicula fluminea is an invasive bivalve responsible for several environmental and financial problems around the globe. Despite the invasive potential of this species, it suffers certain restrictions in lentic environments due to natural phenomena that significantly affect its population structure (e.g. water column fluctuation and sunlight exposure). The present study addresses how temporal decline of the water level in a Neotropical reservoir and exposure to sunlight affect the population structure of C. fluminea. Samplings were carried out twice in the reservoir of Furnas Hydroelectric Power Station (HPS) (Minas Gerais, Brazil), in 2011 and 2012. Population density, spatial distribution and mean shell length of C. fluminea were estimated for each year after sampling in 51 quadrats (0.0625m2) placed on three transects at different distances along the reservoir margins (0, 10 and 20 m from a fixed-point). We observed a predominance of C. fluminea in both years, with a simultaneous gradual decrease in density and richness of native species in the sampling area. Significant differences in density of C. fluminea were registered at different distances from the margin, and are related to the temporal variability of physical conditions of the sediment and water in these environments. We also registered a trend toward an increase in the density and aggregation of C. fluminea as we moved away from the margin, due to the greater stability of these areas (>10 m). The mean shell length of C. fluminea showed significant difference between the distinct distances from the margin and during the years, as well as the interaction of these factors (Distances vs.Years). These results were associated with the reproductive and invasive capacity of this species. This study reveals that these temporal events (especially water column fluctuation) may cause alterations in density, spatial distribution and mean shell length of C. fluminea and the composition of the native malacofauna in Neotropical lentic environments.

GEOECOLOGICAL CHARACTERISTIC OF THE CHEBOKSARY RESERVOIR COAST

2017 ◽  
Author(s):  
Natalya Sitina ◽  
Natalya Sitina ◽  
Tatyana Sitina ◽  
Tatyana Sitina
Keyword(s):  
Negative Impact ◽  
Hydroelectric Power Station ◽  
Left Bank ◽  
Hydroelectric Power ◽  
Coastal Zones ◽  
Current State ◽  
Cheboksary Reservoir ◽  
Zone Of Influence ◽  
Key Sites ◽  
Negative Impacts

Construction of Cheboksary hydroelectric power station with a reservoir was begun in 1968 and was stopped in 1981. The hydrostation was put into operation when filling a reservoir to a mark of 63,0 m with incomplete construction of protective actions. As a result of rise in level of the Cheboksary reservoir to 68,0 m territories of the Nizhny Novgorod Region, the Republics of Mari El and the Chuvash will be flooded. Operation of the Cheboksary reservoir within 33 years on a temporary mark of the retaining level of 63,0 m promotes further development of possible negative impacts and deterioration of life of the population in points of accommodation getting to a zone of influence of a reservoir. In work problems of influence of the Cheboksary reservoir on the nature of adjacent territories are considered. The analysis of influence of natural and technogenic factors on the Cheboksary reservoir is submitted. Comparative research of the territory of a right bank and left bank on studying of hydrological and hydrogeological processes and processing of coast in a zone of influence of a reservoir on key points is conducted. The state is considered recreational development of the territory. Features of a current state of technical objects of the Cheboksary reservoir are defined, the geoecological situation on coast of a reservoir on the studied key sites is revealed. Recommendations about decrease in negative impact of recreational use of coastal zones of a reservoir are developed.

GEOECOLOGICAL CHARACTERISTIC OF THE CHEBOKSARY RESERVOIR COAST

2017 ◽  
Author(s):  
Natalya Sitina ◽  
Natalya Sitina ◽  
Tatyana Sitina ◽  
Tatyana Sitina
Keyword(s):  
Negative Impact ◽  
Hydroelectric Power Station ◽  
Left Bank ◽  
Hydroelectric Power ◽  
Coastal Zones ◽  
Current State ◽  
Cheboksary Reservoir ◽  
Zone Of Influence ◽  
Key Sites ◽  
Negative Impacts

Construction of Cheboksary hydroelectric power station with a reservoir was begun in 1968 and was stopped in 1981. The hydrostation was put into operation when filling a reservoir to a mark of 63,0 m with incomplete construction of protective actions. As a result of rise in level of the Cheboksary reservoir to 68,0 m territories of the Nizhny Novgorod Region, the Republics of Mari El and the Chuvash will be flooded. Operation of the Cheboksary reservoir within 33 years on a temporary mark of the retaining level of 63,0 m promotes further development of possible negative impacts and deterioration of life of the population in points of accommodation getting to a zone of influence of a reservoir. In work problems of influence of the Cheboksary reservoir on the nature of adjacent territories are considered. The analysis of influence of natural and technogenic factors on the Cheboksary reservoir is submitted. Comparative research of the territory of a right bank and left bank on studying of hydrological and hydrogeological processes and processing of coast in a zone of influence of a reservoir on key points is conducted. The state is considered recreational development of the territory. Features of a current state of technical objects of the Cheboksary reservoir are defined, the geoecological situation on coast of a reservoir on the studied key sites is revealed. Recommendations about decrease in negative impact of recreational use of coastal zones of a reservoir are developed.

THE IMPACT OF INCREASED TECHNOGENIC ENVIRONMENTAL POLLUTION ON THE HEALTH AND DEMOGRAPHIC BEHAVIOR OF RESIDENTS OF KRASNOYARSK

2020 ◽  
pp. 55-66
Author(s):  
Olga N. Yanenko ◽  
Keyword(s):  
Power Plants ◽  
Negative Impact ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Demographic Indicators ◽  
Demographic Behavior ◽  
City Population ◽  
Demographic Processes ◽  
And Behavior ◽  
The Impact

The article considers negative trends in demographic processes associated with the impact of the environment on the life and health of the Krasnoyarsk city population. Methodological features of the study of the research subject are discussed, as well as the elaboration of the problem within the framework of specific sciences is analyzed. To what extent does the habitat with an increased level of technogenic pollution affect the subjective attitudes of residents, their needs, opinions, plans, and decision-making regarding demographic aspects of life? The presented results of expert interviews with specialists in the field of environmental protection and public health were taken by the author in November 2020. They indicate a truly deplorable situation in one of the major industrialized cities of Russia, Krasnoyarsk. The main pollutants are supposed to be transport, the RUSAL aluminum plant, the private sector with coal-fired heating and three coal-fired power plants. The Krasnoyarsk hydroelectric power station has a negative impact as well. The experts point to the obvious insufficiency of studying the problem of the impact on the demographic indicators and behavior of citizens, which is associated with the lack of open information about the level of the Krasnoyarsk urban environment pollution and specialized research in this direction.

scholarly journals Influence of hydroelectric power station on flood situation and modeling of hydrological characteristics

2020 ◽  
Vol 221 ◽  
pp. 02002
Author(s):  
Yaroslav Grebnev ◽  
Alexander Moskalev ◽  
Anatoly Vershkov
Keyword(s):  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Power Station ◽  
Flood Water ◽  
Hydrological Characteristics ◽  
Climatic Characteristics

The paper presents the results of modelling the process of flooding the territories of settlements during the rise of flood water in view of the hydrological and climatic characteristics of the Yenisey River. The effectiveness of the model, which takes into account many factors, has been assessed in the course of rising flood water on the Yenisey River in 2020.

scholarly journals Protection of floristic diversity in the Sajna River valley – in view of the planned construction of hydroelectric power station in Sarkajmy

2014 ◽  
Vol 20 (1) ◽  
pp. 45-56
Author(s):  
Grażyna Łaska
Keyword(s):  
Plant Communities ◽  
Biological Diversity ◽  
Negative Impact ◽  
River Valley ◽  
Hydroelectric Power Station ◽  
Floristic Diversity ◽  
Hydroelectric Power ◽  
Power Station ◽  
Viburnum Opulus ◽  
Natural Habitats

Abstract The study was carried out to determine the floristic diversity in the Sajna River valley, in the region of direct and indirect impact of the hydroelectric power station planned to be built in the village of Sarkajmy. Phytosociological diversity of plant communities and floristic diversity were analysed taking into account the predicted influence of the planned power station on the Sajna River. The study was performed in 2010 using field methods and GIS localisation of analysed sites. 73 phytosociological surveys were made and particular floristic patches were identified. Global Positioning System (GPS) surveys were used to delimit the different plant communities and spot the sites of protected plant species. Thirteen plant communities were identified in the study area, five of which are of European importance that require protection within Natura 2000 sites. This group of plant communities comprises four forest plant communities (Salicetum albo-fragilis, Ficario-Ulmetum, Tilio-Carpinetum, Acer platanoides-Tilia cordata) and one herbaceous community (Urtico-Calystegietum). One species under strict protection (Daphne mezereum L.) and five species under partial protection (Viburnum opulus L., Ribes nigrum L., Asarum europaeum L., Eurhynchium angustirete (Broth.) T.J.Kop., Eurhynchium striatum (Schreb. ex Hedw.) Schimp.) were noted. The presence of valuable natural habitats and protected species in the Sajna River valley indicates the natural potential of the area and illustrates its biological diversity. The studied area is threatened by negative impact of the hydroelectric power station planned to be built on the Sajna River, since water damming will flood the river terrace that will lead to the formation of a 7.25 ha pond of.

scholarly journals Modelling the impact of anthropogenic modifications to river channels on the course of extreme floods. Case study: August 2002 flood, Blanice River basin, Czechia

Geografie ◽  
2008 ◽  
Vol 113 (3) ◽  
pp. 237-252
Author(s):  
Jakub Langhammer ◽  
Jan Sitař
Keyword(s):  
Negative Impact ◽  
Local Level ◽  
River Channel ◽  
Water Levels ◽  
River Channels ◽  
Extreme Floods ◽  
River Bed ◽  
Extreme Flood ◽  
Anthropogenic Modifications ◽  
The Impact

This paper presents the results of analysis of the impact of anthropogenic modifications to river channels on the course of floods by means of hydraulic modelling. The study is focused on the quantitative analysis of changes of the flow dynamics in the river bed and in the inundation zone due to river network modifications. The one-dimensional hydraulic model HEC-RAS coupled with GIS is used to simulate the effect of the river channel changes on the course of extreme flood. The analysis is made on the example of the extreme flood in August 2002 on the down course of Blanice River in Czechia. The results of the simulations proved that the common anthropogenic modifications of river channel have only a minimum impact on the overall course of extreme floods. At the local level, weirs and unsuitably dimensioned bridges have a negative impact on the course of floods. The simulations also showed a negative impact of extensive complex modifications of the river bed, performed in the lower course of Blanice River in the first half of the 20th century. However, the overall impact of common types of river channel modifications on peak flows and water levels in the culmination is negligible.

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