Noun
siltation (usually uncountable, plural siltations)
The (typically undesirable) increase in concentration and or of deposition of water-borne silt in a body of water.
Changing siltation patterns may cause the sudden appearance of shoal waters, and often floating or sunken logs and trees (called snags) can endanger the hulls and propulsion of riverboats. Source: Internet
For example, uncontrolled deforestation in the Canal Zone by landless peasants has caused soil erosion and siltation, and is damaging the water supply that is vital to the Canal's operation. Source: Internet
Increased siltation combined with overgrown mangroves, fallen trees and debris from Hurricane Earl made the over two mile stretch of the creek virtually impassable. Source: Internet
They also say that there are no silk curtains or barriers to mitigate against siltation and no beacon lights or demarcation buoys to aid navigation. Source: Internet
The siltation of the river delta forced the town further away from water; In the 14th century, however, Ibn Battutah described Abadan just as a small port in a flat salty plain. Source: Internet
Mortality of salmon in the early life stages is usually high due to natural predation and human-induced changes in habitat, such as siltation, high water temperatures, low oxygen concentration, loss of stream cover, and reductions in river flow. Source: Internet