![]() ![]() The basic design of a siphon system is that under “normal” water flow conditions, excess water within the impoundment will be conveyed through the siphon system due to gravity. The diagram shown below outlines the general schematic of the components and installation of a siphon system. And the plastic pipe that is utilized does not have the lifespan issues as does CMP. The siphon system is generally very easy to install and easy to maintain due to its inherent design. The second option does not necessitate draining the lake and/or removing a section of the dam and is referred to as a siphon system. Both of these factors are not very desirable for obvious reasons. The first option is to dig up and remove the existing CMP structure, which means draining the lake entirely and also involves cutting a big hole through the dam to install the new lateral piping system. So, when removing and replacing the DS of a lake or pond there are really only two options to consider. If it is not addressed this means that you will likely end up with a mud pit instead of a lake. CMP under the best of conditions has a “useful” life of 20 to 30 years, which means it will begin to fail at some point. The piping system installed primarily consisted of CMP or corrugated metal pipe, since that was the cheapest alternative at the time. Generally, as part of this system, a valve was installed within the pipe system to allow for manipulation of the water level. Generally, the design of the DS included a vertical riser pipe in the pond that drains the water off the top of the lake or pond and the connecting lateral pipe which conveys the water through the dam down gradient. There are thousands of lakes and ponds that have been built in Georgia over the last 50 years. This drainage structure (DS) is the critical element in the life of the lake or pond. In most cases, building a lake or pond involves building a dam to hold back the water and includes a drainage structure in order to allow the excess water to pass down gradient. These lakes are referred to as Carolina Bays. ( ) Yes, there are some natural lakes in the very southern part of Georgia which are formed as a result of geologic depressions. The “something” could either be a result of beaver activity or it could have been built by the river itself as in the case of an oxbow lake. ![]() Unlike the northern part of the country, if you live in Georgia and have a lake or pond on your property it was probably built by someone or something.
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