There are two important drainage aspects to consider in the construction of a sports court. These aspects are the control of sub-surface water, and the control of storm water.
Sub-surface water is moisture below the sports court, and left untreated has the potential to penetrate the court base and cause the court to fail. It is essential that any sub-surface moisture is dealt with during construction otherwise there is a high probability that there will be expensive repair work required at a later date.
Sub-surface drainage can be as simple as the installation of ag-lines along the areas of the court where the surrounds are higher than the court surface, but Court Craft can assist in determining the needs foe each specific site.
Stormwater is moisture that travels over the court surface, typically from rain or from the collection of water from surrounding areas. This water is normally collected by drains around the court, and then funneled to a large pit drain before being dissipated in the stormwater disposal system. To allow this water to run off the court, all courts are built with a fall of 1%, normally diagonally across the court to encourage the water to run downhill to the collection drains.
Councils may have specific requirements for the hydraulics of your court, and plans for stormwater detention and disposal need to be carefully designed to account for these requirements.