What are the parts of a storm drain?

The complete system will be referred to as a storm drain system and will normally consist of curbs and/or gutters, inlets or catch basins, laterals or leads, trunk lines or mains, junction chambers, manholes, and ponds.

What is storm drain water?

The storm drain is a system designed to carry rainfall runoff and other drainage. The runoff is carried in underground pipes or open ditches or swales and discharges untreated into local streams, rivers and other surface water bodies. Storm drain inlets are typically found in curbs and low-lying outdoor areas.

How deep should a storm drain be?

Sufficient depth shall mean the minimum cover from the top of the pipe to finish grade at the storm drain alignment. Under normal conditions minimum cover shall be 30-inches above the top of the pipe in paved areas and 36-inches at all other locations.

How a storm drainage system works?

How do Storm Drains Work? The storm drainage system helps prevent floods by diverting rainwater into nearby waterways. The water and pollutants flow into storm drains and through underground pipes directly into the nearest stream, pond or water reservoir.

What kind of pipe is used for a storm drain?

Corrugated plastic pipe is ideal for storm sewer systems, such as underground retention/detention systems as it has the structural strength and watertight joint systems to control runoff quantity and rates of release.

How much does a storm drain cost?

2. Cost of Drainage System in Yard

Type Cost*
Underground Downspouts $200 – $2,000 per downspout
Yard Inlets $50 – $100 per inlet
Concrete Catch Basin/Storm $2,000 – $5,000 per basin
Plastic Catch Basin $200 – $500 per drain

Where does the water from a storm drain flow to?

Water on the ground goes through the storm drains and out to creeks, streams and the Bay without any filtering or cleaning. Water that goes down your sinks, toilet and interior drains goes through the sanitary sewer system and is processed to remove most pollutants before it is discharged to the Bay.

Can you cover a storm drain?

Drain covers are cost effective and easy to use While they come in a variety of sizes and styles, most use a mat-like design that sits directly over the drain. Using a cover to seal your drains is an effective, temporary solution to stop contaminants reaching the stormwater system.

What is the minimum slope of a stormwater drain?

Minimum grade of lots shall be 1%. All slopes are no greater than 2:1 or per Soils Report. All storm drains shall be designed for the maximum storm water entering the drain at the point of concentration and shall have a minimum of 1 foot of freeboard between the top of curb and the Hydraulic Grade Line.

Which pipe is best for drainage?

Polyvinyl Chloride pipes are the most commonly used pipes for any drainage project. Due to the material’s malleable properties, PVC pipes can come in almost any size. These types of pipes are great for drainage situations where the water and environment exert a great deal of pressure and weight.

Which PVC pipe is best for underground drainage?

SDR 35 thick-wall PVC piping is the best material for drainage system piping. Compared to the black, corrugated drain lines you’re probably used to, our thick-wall PVC doesn’t bend, sag, leak water, or get crushed.