Instruments for siltation and sedimentation analysis

Abstract

Land clearing and grading have adverse effects on lagoon, mangrove and other estuarine coastal ecosystems due to sediment transportation. Experiments have shown that the erosive power of water flowing with a velocity ‘V’, varies as ‘V2’ while the transporting ability of water increases to a velocity of ‘V6’. Sediments, which move as bed load at one section may be in suspension at another section. As the silt originates from the watershed, the characteristics of the catchment area such as it’s aerial extent, soil types, land slopes, vegetal cover and climatic conditions like temperature and intensity of rainfall have great significance in the sediment production in the form of sheet erosion, gully erosion and stream channel erosion