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On 19. helmikuuta 2026 klo 9.43.50 UTC,
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Changed title to Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability (previously File C Users U22951718 Downloads Sancold2018 Smithfield Theronandbasson 20 1 Pdf)
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Moved Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability from organization Water Research Observatory to organization Stellenbosch University
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toThis conference paper investigates reservoir sedimentation and downstream coastal impacts associated with the proposed Smithfield Dam on the uMkhomazi River, KwaZulu‑Natal, South Africa. A review of regional sediment yields was conducted and combined with 2‑dimensional hydrodynamic modelling to simulate reservoir sedimentation over a 100‑year period, indicating potential storage capacity losses of 36–66% depending on future sediment yield scenarios. A 1‑dimensional hydrodynamic and sediment transport model was applied to assess pre‑ and post‑dam sediment routing from the dam site to the river mouth. Results show that the dam would trap nearly all coarse sediment, leading to a long‑term reduction of approximately 74 000 t/a (≈21%) in sand delivery to the coast. This reduction corresponds to a 10% decrease in total longshore sediment supply at Durban, with implications for coastal sediment budgets and shoreline stability north of the uMkhomazi River mouth. The study further evaluates cumulative impacts of existing sand mining, showing that dam sediment trapping and sand mining would together reduce fluvial sand supply by up to 37%. Potential mitigation measures include sediment bypass tunnels, improved sand‑mining regulation, catchment management, and targeted beach nourishment. The findings highlight the importance of integrated river–coast sediment management in future dam planning.
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Kentän
keywords
arvoksi muutettiinreservoir sedimentation, Smithfield Dam, uMkhomazi River, sediment yield, coastal sediment budget, shoreline stability, dam impacts, hydrodynamic modelling, sediment transport, sand mining, coastal erosion, KwaZulu‑Natal
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
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publication_date
arvoksi muutettiin2018-11-01
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
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data_collection_organization
arvoksi muutettiinStellenbosch University
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
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data_structure_category
arvoksi muutettiinsemi-structured
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
Kentän
authors
arvoksi muutettiin[{'author_department': 'Institute for Water and Environmental Engineering, Department of Civil Engineering', 'author_email': 'atheron1@csir.co.za', 'author_name': 'Andre K.', 'author_organization': 'Stellenbosch University', 'author_surname': 'Theron', 'contact_same_as_author': 'True'}, {'author_department': 'Institute for Water and Environmental Engineering, Department of Civil Engineering', 'author_email': '', 'author_name': 'Gerrit R.', 'author_organization': 'Stellenbosch University', 'author_surname': 'Basson'}]
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
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data_classification
arvoksi muutettiinboth
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
Kentän
wro_theme
arvoksi muutettiinagriculture
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
Kentän
publisher
arvoksi muutettiinSouth African National Committee on Large Dams (SANCOLD) – Conference proceedings
paketissa Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability -
Poistettiin seuraavat kentät paketista Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability
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Dataset language
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topic
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Uploaded a new file to resource sancold2018_smithfield_theronandbasson_1_id_06bc6b54-6c17-4e92-9b08-ee295c89a6dd.pdf in Reservoir Sedimentation and Potential Impact of the Proposed Smithfield Dam on the uMkhomazi River on the Coastal Sediment Budget and Shoreline Stability