I never wanted to live by open water here because it makes me think of snakes, alligators, mosquitos, and sinkholes. Home Urban Design Retention Ponds: [Everything You Need to Know About]. A well-designed retention pond will reduce the negative environmental effects of stormwater runoff. Although retention ponds are useful for many reasons, they do have some disadvantages that you should consider before building one on your property or in the surrounding community. According to the US EPA guidelines, this happens once every 20 years. Invasive aquatic weeds like hyacinth should be treated with herbicides, as they double every 3 weeks, and can rapidly take over the pond. This one here was about half full it had about two feet deep for the most of it.. Therefore, it is important to take precautions when building a retention pond in an area where there are likely to be children or animals. Man dead after driving car into South Hill retention pond - Yahoo News The pond should not alter natural drainage patterns or interfere with tree root systems. Usually, a pond of 12.5 acre-feet capacity is required to collect stormwater from one quarter of land. The basic design includes a forebay and a main pond. Erosion can be caused by fast-moving water or wind-carrying sediment, sand, and debris. It offers a simple and effective technique of purifying the collected water. The purified water can be reused for non-drinking purposes, like irrigation, landscaping, and industrial uses. Retention ponds can also recharge underground aquifers. It improves the biodiversity (variety of organisms) by providing a suitable habitat for several species of plants and animals. When considering the cost, it is important to look at the economic benefits provided by the pond too, as it may also increase property value, since these are regarded as an amenity. For permeable soils, a liner or an impermeable material, such as puddle clay, may be used. However, in order to function properly, retention ponds must be appropriately sized for the catchment area and critical storm depth.
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