If left long enough, you will end up with more silt than water.Įutrophication or excessive richness of nutrients in a lake or other body of water is the eventual result of this build up and can cause a dense growth of plant life and death of animal life from lack of oxygen. This concept is called the Law of Conservation of Mass. The same amount of matter exists before and after the change-none is created or destroyed. Matter can change form through physical manipulation and chemical reactions, but through any of these changes, matter is conserved. Silt build up cannot be remediated with more chemicals or bacteria or enzymes and must be physically removed eventually. People contribute by adding chemicals to the water, debris tossed in or blown in from litter, landscaping techniques are notorious for introducing grass and other clippings, and other less-natural mechanisms. This sediment gathers in many natural ways including dust storms, erosion, and dead and decaying matter settling into the mud. Without an outlet, “silt” accumulates on the bottom of these water features as a result. Fish are often stocked to handle natural pests such as mosquitoes, macrophytes(aquatic plants), or algae. We use aeration, fountains, and waterfalls to oxygenate the water. Man-made lakes are simply holes, dug into the earth, lined with plastic, concrete, or clay, and filled with water.Īs lake managers we work to create artificial circulation to simulate a natural environment. Even the bodies we consider “semi-natural”, because they are fed by a river or stream, are formed by dams that cause the water to back up into a reservoir. Here in the desert, we have no natural lakes.
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