What is the difference between detention pond and retention pond?

What is the difference between detention pond and retention pond? Retention is primarily provided on the surface through ponds, and underground through tanks, more commonly geocellular tanks. Detention is often provided by detention basins. Retention storage within ponds as well as helping manage flood risk is also useful in providing water treatment.

What is the difference between detention time and retention time? Detention and retention both refer to storing rain water on-site during a storm event, when the risk of flooding is highest. The difference is that when water is detained, it is slowly released into a stream or river and leaves the site. When water is retained, it is not intended to leave the site.

What are water retention ponds? Retention ponds are ponds or pools designed with additional storage capacity to attenuate surface runoff during rainfall events. They consist of a permanent pond area with landscaped banks and surroundings to provide additional storage capacity during rainfall events.

Do I need permission to fill in a pond? Planning permission may be required to create, drain or infill a pond. The Local Planning Authority will consult their Development Plans to ensure local policy on ponds and associated features are adhered to.

What is a detention area, the differences between Detention and Retention Ponds

What is the difference between detention pond and retention pond? – Similar Questions

Are pond fish omnivores?

Most common pond fish are omnivorous, and will eat quite an – perhaps unexpected – array of foods if provided. For example, koi and goldfish will eagerly consume peas, citrus fruits, squash, spinach, wheat germ, plankton, blood worms, shrimp, and even algae!

How to get rid of turtles in your pond?

Trapping is the most practical and efficient method of removing turtles from a fish or livestock pond. Submerged traps are needed for snappers and soft-shell turtles. Surface traps are most effective for slider turtles and other turtles that bask in the sun.

How often do you feed pond fish in winter?

In wintertime you should stop feeding fish daily if water temperature is below 10°C is. Start feeding fish daily again at a water temperature of 10 °C or higher. At lower temperatures metabolism of (cold-blooded) fish is so slow, that they hardly need any feed.

How to clean out a small garden pond?

Remove any plants to a shaded, moist area to prevent stress as you clean the pond. Once the pond is as empty as you can get it, rinse the pond walls thoroughly and scoop out any accumulated muck, dumping it into your compost bin or garbage.

How to fix pond liner leak?

The best and most recommended way to repair your pond liner is to use a pond liner repair kit. Useful for both small and medium-sized liner holes, pond liner repair kits provide a repair patch and sealant that you can use to cover over the hole or tear to seal it effectively.

How to oxygenate pond water?

A very simple way to add oxygen to the pond is to add an air pump. Sitting at the side of the pond, it will pump air through a small hose to an air stone and bubbles will enter the water. When the bubbles break the water’s surface oxygen will then be added.

Can i use sharp sand in a pond?

If you have the patience to make a smooth surface, you don’t need sand. Even with sand, it’s important to inspect the bed of the pond carefully, and to remove any sharp stones, or hard bumpy nuggets of soil. Soils such as clay may contain a lot of flints, which have sharp edges. It’s important to remove them.

Can i make a fishing pond in sims 4?

How to add fish to ponds in The Sims 4. To turn your beautiful new pond into a fisherman’s paradise, you’ll need to first add the “Fishing Allowed Sign” to your pond from the “Pond Objects” section of the “Outdoor Water Decor”.

How big does a goldfish pond need to be?

As a general rule, goldfish can survive in a pond of 500 gallons or less, where Koi really begin to thrive in a pond of around 1000 gallons. However, for the best biological conditions with either type of fish, the more water the better.

How do i get rid of ducks in my pond?

The easiest and most simple way to stop ducks from landing on your pond is to deny them access with pond netting! Pond netting ensures ducks can’t enter the water, and they’ll need water to stick around.

What does a uv filter do in a pond?

Pond UV lights or UV ‘filters’ are ultraviolet light systems that have been used for years in ponds and aquariums in an effort to control green water caused by algae.

Do you need a UV filter for a pond?

The remnants of the algae then clump together and are easily taken out by your filter. You can have a filter without a UV but don’t expect to have clear water. However you must not use a UV without a filter as the dead algae will have nowhere to go and will just rot in your pond creating more problems.

Is it spelled plexiglass or Plexiglas?

Plexiglass with two s’s is the generic term synonymous with acrylic sheet. Plexiglas® with one s is the brand name. Other trade names that have become comparable to Plexiglas® include Acrylite®, Lucite®, and Perspex®.

How do you increase oxygen in a fish pond?

Dissolved oxygen levels are increased by supplementing wind and wave action, adding plants to water and exposing water to purified oxygen. Using the latter method can result in supersaturation, or levels of oxygen in excess of natural levels. Run a portable splash or spray type aerator in water.

What kind of sand do you use to line a pond?

Remove any lumps or sharp stones from the hole. Then spread a 3cm (1.2in) layer of soft builder’s sand over the area. This will help protect the butyl liner being punctured. A layer of pond underlay or old carpet above the sand will provide additional protection.

How often should you clean a small garden pond?

Small ponds need a complete overhaul to remove debris every five years, while large ponds need thorough cleaning every 10 years.

Should you put sand in the bottom of a pond?

That won’t make your clients happy!” “Installing sand on the bottom of a pond or natural pool might create an environment where harmful microbes could dwell, and that may put your clients and their expensive koi fish at risk of contracting a waterborne illness!” “Any disturbance in the sand, whether it be a fish …

Can I tile my pond?

For smaller surfaces and details, a brush will do the job. Concrete, brickwork or tiles are a nice choice for a large swimming pond, but one that require skillful construction and maintenance. With Permacon you ensure your swimming pond is actually waterproof and stays waterproof.

What kind of acrylic is plexiglass?

Plexiglass is a kind of clear acrylic sheet, and it is specifically used as a generic term to refer to a few different products that are manufactured under different names, including Plexiglas, the original trademarked name.

When should I turn off my pond aerator?

Here’s the shutdown process we recommend: Unplug and shut your aeration system down completely. It’s critical to do this before the ice starts to build on your pond’s or lake’s surface for the safety of those who will skate on the pond.

What omnivores are in ponds?

Some stay in the pond. Crayfish are omnivores. That means they eat plants and animals. They eat things like algae, water plants, insects, worms, and larva.

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