Reservoir Sedimentation: The Case of the Opa Reservoir Catchment, Southwestern Nigeria

Adediji, A.

doi:10.1080/03736245.2005.9713835

Cited by 9 publications

(7 citation statements)

References 3 publications

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“…The study confirms the findings of various researchers (Mironga, 2004 andAdediji andAjibade, 2008) that rapid population growth goes hand in hand with the increase in settlement/ built up area and intensive land use farming. Rawat and Manish (2015) also reported that anthropogenic influence such as urbanization, expansion of agricultural activities, deforestation which led to temporal and spatial changes in LULC has affected water flow paths and water balance of dams.…”

Section: Discussionsupporting

confidence: 90%

Monitoring decadal changes in the Khudia Dam in the Central Indian State of Chhattisgarh through the application of Remote Sensing and GIS

Mahato¹

2022

EEC

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Dams and reservoirs are constantly threatened by sedimentation and human interference. The presentstudy focuses on decadal variation of Khudia dam built on the Maniyari River in the Mungeli district ofChhattisgarh. IRS P6, LISS III satellite imagery for the years 2004 and 2013 has been used. During the year2004, area covered by water was 53.57% which was reduced to 33.15% by 2013. Fluctuation in the spatialextents of the river bed has also been associated to the change in the water level/ rainfall. It has beenobserved that the agricultural land has appreciated over time (2.43%) while the cover of barren land hasdecreased. The LULC maps created will enable the local decision makers to adopt better land use planningand appropriate use and management of the regionâs water bodies.

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Section: Discussionsupporting

confidence: 90%

Monitoring decadal changes in the Khudia Dam in the Central Indian State of Chhattisgarh through the application of Remote Sensing and GIS

Mahato¹

2022

EEC

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“…The sediment mass of Goronyo Reservoir is computed using equation ( 2 Therefore, the average annual sedimentation of Goronyo Reservoir is 819,158.81ty -1 . In comparison with that of Opa Reservoir was calculated as 38,830.26ty -1 (Adediji, 2005). It can also be compared with the mean annual sedimentation rate of 6,625ty -1 as computed for some reservoirs of Tigray, Northern Ethiopia (Haregeweyn et al, 2006).…”

Section: Sediment Mass and Average Sedimentation Ratementioning

confidence: 99%

Analysis of Sediment in Goronyo Dam, Sokoto, Nigeria

Peni¹

2022

ijmra

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Reservoir sedimentation has been a global bottle neck in maintaining the design storage capacity of reservoirs. Reservoir sedimentation leads to the reduction of the original capacity which affects irrigation, hydropower, flood control, drinking water supply and recreational activities. Introduction of mechanized farming without due regard to the nature of the environment is aggravating the erosion and sediment problem. This study has discussed and analyzed the most important parameters (bulk density, sediment volume, sediment mass, trap efficiency, sediment yield etc) for 31 years (1984 -2015) using Empirical Method and Goronyo Dam Stage Capacity Curve. The Mean bulk density (dBD) was gotten as 0.97gcm3, Sediment Volume (SV) as 26,179,302m3 , Sediment Mass (SM) as 25,393,922.94 tones, average annual sedimentation as 819,158.81ty-1 , Trap Efficiency (TE) as 90.2%, Sediment Yield (SY) as 908,158.00 ty-1, Specific Sediment Yield (SSY) as 42.35𝑡𝑘𝑚−2𝑦−1, The loss of storage (26,179,302m3)

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“…Sediment Accumulated Volume (SAV) was computed by subtracting the Designed Reservoir Volume (DRV) from the Present Determined Volume (PDV) from fieldwork. This method was previously used by [1,2,28,37] to find the volume of timeline sediment accumulation in their respective works. Equations (3) and (4) were used for the prediction of the reservoir volume losses and the estimation of the percentage of annual loss of the Tagwai reservoir volume capacity.…”

Section: Computation Of Sediment Accumulation Volumementioning

confidence: 99%

“…Reservoir bathymetry are often required for the following reasons among others [2,3,10,21,24,32,34,40]: (1) to optimize stage/volume curves for routine reservoir survey expedition, (2) to determine the amount of sediment load and yield contributed by the upstream hydrological basin, (3) to help engineers have handy information about what to do if another reservoir is to be design in the same region, (4) to predict sediment spatial distribution pattern within the reservoir in question especially those around useful hydraulic features like the intakes, and (5) to examine the best methods of sediment prevention and/or sediment removal to be adopted.…”

Section: Introductionmentioning

confidence: 99%

An investigative study on the volume of sediment accumulation in Tagwai dam reservoir using bathymetric and geostatistical analysis techniques

et al. 2019

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Sustainable provision of potable water for domestic, industrial and development purposes in Minna has been elusive over the years due to several factors, including lack of spatial database (locations, depth, area, volume, etc.) and the threat by siltation and land use activities within the corridors of the reservoir area. This paper utilizes the data collected from fieldwork to investigate the volume of sediment accumulated in Tagwai reservoir basin over a period of 31 years since the dam was constructed in 1978. Sediment accumulation study in a dam is one of the useful methods of gathering information needed for its monitoring, maintenance, and sustainability. Leica TC1201 (total station) was used for perimeter survey, while Raytheon DE-119 (echo sounder) was adopted for depth measurement. A comparison was made between the designed reservoir volume (28.3 × 10 6 m 3) and the computed volume (20.4 × 10 6 m 3). A loss of about (7.9 × 10 6 m 3) was recorded. Sediment accumulation gave 0.25 Mm 3 , a spread of about (0.80%) annually. Prediction and error analysis was done using geostatistical methods of Kriging/Co-kriging and Empirical Bayesian Kriging in ArcGIS software. The predicted root mean square errors are 0.0963 and 0.1189 for both methods which presented a good representation while testing with other available methods. It can be concluded that the storage capacity of the reservoir is depleting which has further exacerbated the shortage of water experienced in Minna metropolis therefore, urgent attention for de-silting is highly recommended.

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Reservoir Sedimentation: The Case of the Opa Reservoir Catchment, Southwestern Nigeria

Cited by 9 publications

References 3 publications

Monitoring decadal changes in the Khudia Dam in the Central Indian State of Chhattisgarh through the application of Remote Sensing and GIS

Monitoring decadal changes in the Khudia Dam in the Central Indian State of Chhattisgarh through the application of Remote Sensing and GIS

Analysis of Sediment in Goronyo Dam, Sokoto, Nigeria

An investigative study on the volume of sediment accumulation in Tagwai dam reservoir using bathymetric and geostatistical analysis techniques

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