Retention Ponds vs Detention Ponds
As cities and small municipalities across the country grow and expand, local governments and agencies have had to come up with a way to deal with stormwater and overflow in a way that helps conserve some rain water to use and dispose of excess water without affecting local rivers and streams or public health.
Retention and detention ponds serve as a solution to local stormwater drainage problems, and while the purpose of both ponds are the same, there are some key differences between the two types of ponds. Essentially, the difference is that one is built to hold water at all times, and one is built to retain water for a shorter time period and then release it in a way that is harmless to the surrounding environment.
Retention ponds are built to catch stormwater and retain it at all times. These basins are built with a drain system positioned up higher. This drain system, usually called a riser, allows for excess stormwater to slowly drain from the pond when it gets too full.
Retention ponds are useful because they allow for an opportunity to collect and treat stormwater overtime so the water can be reused in a safe, effective way. Depending on the location of the pond, new habitats for local wildlife can also be created because the basin is always full of water.
A major disadvantage of retention ponds is that if the water retained is left untreated, or it’s treated in the wrong way, they can pose a potential hazard to public health and safety. Another disadvantage of retention ponds is the space that they require in order to be productive. Because they consistently hold water, there needs to be enough land to permanently commit to the pond.
Detention ponds are used to temporarily catch and hold stormwater, but mostly remain dry. They are designed as a backup to municipal drainage systems during big storms to prevent flooding and erosion of local streams and lakes.
The riser in a detention pond usually lies closer to the bottom of the pond, if not directly on the bottom, in order to accommodate quick drainage. The largest advantage of detention ponds are the cost efficiency. They are essentially large holes in the ground and can remain that way until a large storm.
Similar to retention ponds, however, a large disadvantage to these ponds is that they require a lot of space to be useful. Detention ponds also can’t contribute to water retention, treatment, and reuse because the stormwater they catch is immediately drained.
Hydrovac Trucks Can Help Treat Your Pond
Regardless of the kind of pond, hydrovac and vacuum services can be useful in the treatment of both types. Hydrovacs can be useful in retention ponds that require constant treatment in order to protect public health. Vacuum excavation services can be helpful in detention ponds when they’re dry to keep the area clear.
At Kinetic Industry, our team of trained technicians can help with the treatment of either ponds with our state of the art hydrovac and vacuum truck equipment. Contact our office today to see how we can help!