Actually reservoirs are created when dam's are built.
It is used for extra drinking water in times of drought, farm irrigation, to make it safer for boat/ship traffic, controlling floods, etc.
Sediments build up in the Abyssal plain.
condimental shelf
Sediment can build up because of the wind or water.
Lake Mead is the reservoir lake formed in Arizona and Nevada by Hoover Dam.
The major reservoir of the phosphorus cycle is in rocks and sediments. Phosphorus is released into the environment through weathering of rocks, where it can then be taken up by plants and other organisms.
The sediments build up on the floor of the stream, ocean, river, or lake and causes the water to lower.
A dam is a structure which controls the amount of water flowing. Silt build up is a type of problem many dams face. Silt is a type of sediment which builds up around the dam, as all water contains some form of silt or debris. Some problems caused by silt build up are erosion of dam parts, abrasion to dam materials, and damage to the dam turbines.
To build up water in a controlled area, and generate electricity off of them.
Beach sand
The build up of sediments and debris left behind by the bodies of tiny organisms.
Beavers usually build a dam where there is water, so they end up blocking off water in one section of the stream. This means the water backs up and had to go some place else so this means a lake or pond is formed.
They will probably be paid to move away from the site in order for the company who's going to build the dam to put it up