The Kārūn empties large quantities of silt into the Shaṭṭ Al-ʿArab, necessitating continuous dredging to keep the channel navigable for shallow-draft oceangoing vessels.
It appears that some major tectonic event took place at the beginning of the period (c. 5500 bce), causing the deposition of great quantities of silt on the plain, almost completely burying the original mound at Mehrgarh.
The flow of the Yongding is irregular; in the rainy season it rises rapidly, carrying with it large quantities of silt, which raise the level of the riverbed considerably.
The sea's northern and eastern third is less than 600 feet (180 metres) deep, in part because vast quantities of silt have been deposited by the Irrawaddy River at its delta.
Vast quantities of silt are brought down by the Don and Kuban rivers, so that in the Taganrog Gulf in the northeast, the sea's depth is 3 feet (1 m) or less.
The Red River has a very irregular volume throughout the year and carries huge quantities of silt because of the large proportion of easily crumbled soil in its basin, especially in the red lands from which its name derives.
The high TDS values in the lagoon waters could be attributed to the discharge of domestic waste that results in large quantities of silt and debris being carried into the lagoon.
A perennial problem with the river was that the tides deposited large quantities of silt in the channel, and during the summer months the flow of the river was insufficient to scour the silt away.
The shipwreck of TA 20 was found by Italian wreck divers in 1999, she lies on a part of sea floor near a commercial trawling zone, and is regularly obscured by large quantities of silt.
Elena subjected the Apalachicola Bay reefs to high winds, strong tidal action, and moderate to heavy rainfall, churning up huge quantities of silt and mud which suffocated up to 90% of live oysters and virtually destroyed the most important harvesting sites.
