scholarly journals ESTIMATING STORAGE CAPACITY LOSS DUE TO SEDIMENTATION FOR MURUM RESERVOIR IN SARAWAK, MALAYSIA

2021 ◽  
Author(s):  
JOYCE JANGGU ◽  
SUSIE NADYA ◽  
MUBASHER HUSSAIN
Keyword(s):  
Storage Capacity ◽  
Capacity Loss

scholarly journals Use of Drones for the Topo-Bathymetric Monitoring of the Reservoirs of the Segura River Basin

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 445 ◽  
Author(s):  
Manuel Erena ◽  
Joaquín Atenza ◽  
Sandra García-Galiano ◽  
José Domínguez ◽  
José Bernabé
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Storage Capacity ◽  
Water Reservoir ◽  
Western Mediterranean ◽  
Annual Rate ◽  
Capacity Loss ◽  
Western Mediterranean Basin ◽  
Different Types ◽  
Triangular Irregular Network

The Segura River Basin (SRB), located in the South East of Spain, has the lowest percentage of renewable water resources of all the Spanish basins. Therefore, knowledge of the annual rate of water reservoir sedimentation is an important issue to be resolved in one of the most water-stressed regions in the western Mediterranean basin. This paper describes the sensors developed in collaboration with technology-based enterprises (aerial drone, floating drone, and underwater drone), and the methodology for integration of the different types of data acquired to monitor the reservoirs of the SRB. The proposed solution was applied to 21 reservoirs of the SRB. The proposed methodology is based on the use of unmanned aerial vehicles (UAV) for photogrammetry of the reservoir surface area. For each reservoir, two flights were completed, with 20 cm and 5 cm resolution, respectively. Then, a triangular irregular network mesh was generated by GIS techniques. Surface water vehicles (USV) and underwater remote-operated vehicles (ROV) were used to undertake bathymetric surveys. In addition, water quality measurements were made with an ROV device. The main results consist of topographic and bathymetric measurements for each reservoir, obtained by using equipment based on OpenSource technology. According to the results, the annual rate of storage capacity loss of water resources in the SRB´s reservoirs is 0.33%.

Assessment of Reservoir Storage Capacity Loss and Investigating the Effects of Climate Variability on Reservoir Sedimentation in Italy

2021 ◽  
Author(s):  
Epari Ritesh Patro ◽  
Carlo De Michele
Keyword(s):  
Soil Erosion ◽  
Hydrological Modeling ◽  
Sediment Load ◽  
Storage Capacity ◽  
Assessment Tool ◽  
Hydropower Plant ◽  
Reservoir Sedimentation ◽  
Capacity Loss ◽  
Starting Point ◽  
The Future

<p>Reservoir sedimentation has a prominent impact on the hydropower performance in the future and is a growing concern for hydropower stakeholders. Sedimentation caused by soil erosion is influenced by various parameters. Reservoir sedimentation is one of the most challenging problems that affect hydroelectric production since it overall causes a reduction of the reservoir capacity that overcomes the annual increase in storage volume and implies a dangerous net loss of energy. The first part of this study examined various Italian reservoirs (50 dams) to determine sedimentation rates and storage capacity loss based on available bathymetric surveys. All the reservoirs studied here have reached an average age of 74 years as of 2019, with the highest loss of capacity observed at 90% and the highest annual sediment yield of 2471 m<sup>3</sup>/km<sup>2</sup>/year. Out of all the reservoirs studied, 25% of them already have reached their half-life as of 2019. The second part of this study extended the work to the specific case study of the Ceppo Morelli hydropower plant. The study was carried out to analyse the water-sediment interaction, future sediment load and prioritizing of critical soil erosion areas using the Soil and Water Assessment Tool (SWAT). The distinguishing feature of this work lies in the possibility to exploit remote sensing data (i.e. actual/potential evapotranspiration) to successfully calibrate hydrological models in scarce data regions. Simulation results indicated that the discharge and sediment load entering Ceppo Morelli reservoir will decline and the rate of reduction of latter is higher than that of former for all the future climate scenarios implemented. This analysis will provide a starting point for management and prioritization of adaptation and remediation policies for addressing the issue of reservoir sedimentation. These results are part of the RELAID project funded through PRIN-Italy. The aim of this project is to integrate updated knowledge on hydrologic, hydraulics, and sedimentation processes to address the water and flood risk management of impounded Italian rivers through a holistic paradigm.</p><p>Keywords: reservoir sedimentation; hydropower; hydrological modeling; RELAID; Italy</p>

scholarly journals A review of radiometric analysis on soil erosion and deposition studies in Africa

2018 ◽  
Vol 45 (1) ◽  
pp. 10-19 ◽  
Author(s):  
Caroline W. Maina ◽  
Joseph K. Sang ◽  
Benedict M. Mutua ◽  
James M. Raude
Keyword(s):  
Soil Erosion ◽  
Storage Capacity ◽  
Sediment Cores ◽  
Sustainable Use ◽  
Soil Productivity ◽  
Reservoir Sedimentation ◽  
Erosion And Deposition ◽  
Reservoir Storage ◽  
Fallout Radionuclides ◽  
Capacity Loss

Abstract Soil erosion is one of the main soil degradation phenomena that threaten sustainable use of soil productivity thus affecting food security. In addition, it leads to reservoir storage capacity loss because of sedimentation. This not only affects water quantity but also water quality. Worldwide, annual loss in reservoir storage capacity due to sedimentation is 0.5 to 1%. Similarly, about 27% of land in Africa is largely degraded by erosion. As a result, there is need to minimize soil erosion and deposition through site specific estimation of soil erosion and deposition rates in the reservoirs. To achieve this, Fallout RadioNuclides (FRNs) are some of the methods in use. The most common radionuclides include; 137Cs, 210Pb and 7Be. Only few countries in Africa have exploited these FRNs. In these countries, 137Cs has been largely exploited but in some regions, it has been reported to be below minimum detection limit. Using 137Cs and 210Pb, maximum reference inventory in Africa is found to be 1450 and 2602 Bq/m2, respectively. However, there is minimal application of 7Be within the continent. Also, very little has been done in Africa to assess chronology and sedimentation rates of reservoirs using FRNs measured from sediment cores. In conclusion, a gap still exists on FRNs application in Africa in assessing soil erosion, deposition and reservoir sedimentation.

scholarly journals Examining Storage Capacity Loss and Sedimentation Rate of Large Reservoirs in the Central U.S. Great Plains

Water ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 190 ◽  
Author(s):  
Vahid Rahmani ◽  
Jude Kastens ◽  
Frank deNoyelles ◽  
Mark Jakubauskas ◽  
Edward Martinko ◽  
...  
Keyword(s):  
Great Plains ◽  
Sedimentation Rate ◽  
Storage Capacity ◽  
Capacity Loss

Hydrogen Storage Capacity Loss in a LiBH4–Al Composite

2013 ◽  
Vol 117 (15) ◽  
pp. 7423-7432 ◽  
Author(s):  
Bjarne R. S. Hansen ◽  
Dorthe B. Ravnsbæk ◽  
Daniel Reed ◽  
David Book ◽  
Carsten Gundlach ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Storage Capacity ◽  
Hydrogen Storage Capacity ◽  
Capacity Loss ◽  
Al Composite

scholarly journals Estimating Reservoir Sedimentation at Large Dams in India

2018 ◽  
Vol 40 ◽  
pp. 03042
Author(s):  
David C. Froehlich
Keyword(s):  
Surface Runoff ◽  
Land Surface ◽  
Catchment Area ◽  
Storage Capacity ◽  
Reservoir Sedimentation ◽  
Capacity Loss ◽  
Large Dams ◽  
Mathematical Expressions ◽  
Storage Volume ◽  
Runoff And Sediment Yield

Mathematical expressions are developed that relate the storage capacity loss of reservoirs in India to the catchment area, the reservoir surface area, the original storage volume, and the time since the first filling of the impoundment. The relations for sedimentation of reservoirs found on eastward and westward flowing rivers differ significantly, because of meteorological and geological influences on land surface runoff and sediment yield within reservoir catchments. The formulations give good fits to the assembled data and allow an uncomplicated calculation of the half-life of reservoirs (that is, the time needed for the storage capacity to be reduced by 50%), which offers a measure of when sedimentation will have a significant adverse impact on the functioning of dams.

scholarly journals Surface water leakage, sedimentation and evaporation in arid regions: A case study of the Gargar dam, Algeria

2017 ◽  
Vol 35 (1) ◽  
pp. 73-81
Author(s):  
Benfetta Hassen ◽  
Ouadja Abid
Keyword(s):  
Arid Regions ◽  
Storage Capacity ◽  
Reservoir Level ◽  
Water Leakage ◽  
Capacity Loss ◽  
Intense Evaporation ◽  
Dead Storage ◽  
Total Capacity ◽  
Total Average

AbstractThis study was carried out in order to assess the total capacity loss in Gargar dam, third-largest in Algeria, due to the mudding of the reservoir, intense evaporation and water leaks. We analysed the variation in leakage as a function of the reservoir level, and quantify losses due to leaks, sedimentation and evaporation. We relied on site visits and data obtained from the Algerian Agency for Dams and Transfers to assess the leakage volume; reservoir level; sedimentation and evaporation levels for the period 1988–2015. We present an updated report of this problem through the dam. We estimated total average losses of 23 million m3·year−1 for the period 1988–2015, made up of leakage (0.3 million m3·year−1), evaporation (18 million m3·year−1) and dead storage for 4.6 million m3·year−1. However, total losses for 2004 were estimated at 113.9 million m3, which increased to the alarming value of 166.8 million m3 in 2015. We suggest improving the waterproofness by a concrete screen, and reducing mudding and evaporation by reforestation, to increase the storage capacity of the dam.

scholarly journals Effects of Sedimentation on Small Reservoirs in the Mushibemba Catchment, Mkushi Farm Block, Central Zambia

2019 ◽  
Vol 11 (1) ◽  
pp. 55
Author(s):  
Goodfellow Mphande ◽  
Henry M. Sichingabula
Keyword(s):  
Agricultural Land ◽  
Storage Capacity ◽  
Differential Gps ◽  
Reservoir Water ◽  
Reservoir Storage ◽  
Resources Management ◽  
Small Reservoirs ◽  
Capacity Loss ◽  
High Turbidity ◽  
Initial Storage

Sedimentation is one of the problems that affects the storage capacity of most small reservoirs, and if not addressed on time it may lead to the dams being filled up with sediment. The aim of this study was to assess the effects of sedimentation on the storage capacity losses of Moffat dam and GRZ Weir located in the Mushibemba Catchment of Mkushi Farm Block, Central Zambia. The method used to understand reservoir storage capacity loss was bathymetry survey using the hydrographic survey boat (RC-S2) which consists of an echo sounder and a Differential GPS. Information on the initial storage capacity of the two reservoirs was obtained from the Water Resources Management Authority (WARMA). The analysis of the data revealed that the measured volumes of Moffat dam and GRZ Weir were 1,180,462 m3 and 197,218 m3, respectively. The estimated storage capacity losses for Moffat reservoir was found to be 223,789 m³ and 53,312 m3 for the GRZ Weir.  The estimated rates of sedimentation loss were found to be 13,986.81 m3 yr-1 (Moffat reservoir), with a lifespan of 84 years, and 1,480.89 m3 yr-1 (GRZ Weir) with a lifespan of 133 years. The source of the accumulated sediment was mainly attributed to originate from the cleared commercial agricultural land which predominantly consists of clayey to loamy soils. This also accounted for the high turbidity of the reservoir water. This situation therefore calls for periodic dredging of the deposited sediment to increase reservoir storage capacity.

The B.A.M. Storage Capacity

1995 ◽  
Vol 5 (1) ◽  
pp. 85-96 ◽  
Author(s):  
H. Englisch ◽  
V. Mastropietro ◽  
B. Tirozzi
Keyword(s):  
Storage Capacity
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