Storm Water Drainage System

Designing a storm water drainage system is a complex project that requires designing engineers and pipeline contractors to comply with standard provisions at city, state, and federal levels. Plans are submitted to city planning offices for review and approval before pipeline construction can commence. Civil engineering firms have to prepare storm water drainage system plans, drawings, drainage area maps, and storm sewer designs. Upon approval, pipeline construction companies then obtain necessary permits, performance and payment bonds, and insurance certificates.

Storm drainage systems are vital for preventing flooding in residential, commercial and industrial areas. These systems help remove excess water that has accumulated from rainfall or ground water by transporting it to an outlet pipe where it is discharged into a retention or detention pond, or large bodies of water such as rivers and oceans.

Storm water drainage systems are comprised of a minor and major system that are designed based on storm event calculations. The primary function of minor systems is to collect and remove storm water from sidewalks, streets, and roadways. Minor systems are actually quite complex and consist of a pipeline network connected through ditches, underground pipes, street gutters, channels and swales. The major system takes over when water levels exceed the minor system's capacity, such as excessive rainfall or flooding. Combined, these systems can quickly collect and transport storm water runoff to an appropriate location for discharge.

Many factors must be addressed when designing storm water drainage systems. Engineers need to calculate the level of runoff that accumulates upstream, along with the flow rate into streets. Calculations of water flow help engineers determine the type of street gutters required for open channel flow, along with inlet types required to collect runoff and debris. The type of inlet depends on the type of road and can be comprised of a grate inlets, curb-opening inlets, combined inlets, or grate inlets in sags.

Storm water detention ponds are necessary to control the peak flow at outlet pipes to ensure runoff water does not have an adverse affect on properties located downstream of the system. Everywhere people live and where business is conducted, there is a storm water drainage system nearby. With drainage systems comes pollutants because water runs off roofs, streets, parking lots, and land prior to being discharged into waterways.

To control the level of toxins released into the environment and protect watershed health, contractors must comply with EPA storm water management practices. The management of completed public systems is overseen by state environmental services offices, while also in some cases catch basin type of drainage inlets near major highways and intersections may call for management by the Department of Transportation.

Catch basins are positioned at street corners or lower elevation land masses, such as the bottom of hills, to provide an entry point to the drainage system. These "catching" devices are installed along the storm pipeline network to trap pollutants, sediment, and litter and prevent it from entering the watershed.

It is imperative to work with pipeline companies, such as Kana Pipeline, to ensure storm drainage projects comply with Best Management Practices (BMP), which was established in 1996 between the Environmental Protection Agency and American Society of General Engineers. Having a great drainage system is crucial to maintaining the integrity of any above-ground structure for years to come.

Kana has been involved with multiple storm drainage system projects ranging from residential to municipal. We take environmental protection seriously and are committed to using materials that lessen environmental impact. Our crews possess extensive experience with many types of storm water filtration systems that drastically reduce the level of environmental pollutants.

We welcome your questions and are always happy to provide a storm water drainage system proposal. Contact us to discuss your project needs.