The effect of Earth's rotation causes more sediment to build up on one side of the channel than on the other.

Lack of river current has caused sediment to reduce both its depth and width.

If not properly implemented, they cause erosion and sediment in unwanted areas leading to more damage than repair.

Gravel mining may also cause increased sediment.

Increased rainfall can cause sediment to get into the lake, also decreasing clarity.

Drainage starts flowing towards the passive margin causing sediment to accumulate over it.

They secrete a sticky gel as protection against ultraviolet light, and this causes sediment to stick to the mats.

Also, seagrass traps sediment and slows water movement, causing suspended sediment to fall out.

Mount Hood, at the river's headwaters, had erupted a few years earlier, causing loose sediment to collect at the river's mouth.

Water main breaks can often cause sediment that shows up at the tap.