“Rainwater harvesting is not just about capturing water, it’s about capturing potential. With the right strategies in place, we can turn stormwater runoff into a valuable resource for sustainable water management in buildings.”

Rainwater runoff coefficients are important parameters used in hydrological calculations to estimate the amount of rainwater runoff from different surfaces. Understanding runoff coefficients and how to calculate them is crucial for designing effective rainwater harvesting systems. In this blog article, we will explore the concept of runoff coefficients, discuss their significance for rainwater harvesting, and provide examples of how to calculate them for different surfaces.
Importance of Runoff Coefficients for Rainwater Harvesting
Runoff coefficients are crucial for designing rainwater harvesting systems as they help estimate the volume of stormwater runoff that can be captured and stored for beneficial uses. By considering the runoff coefficients of different surfaces in the catchment area of a rainwater harvesting system, designers can accurately size storage tanks, determine the storage capacity needed, and plan for appropriate treatment and use of harvested rainwater.
Rainwater harvesting systems can be designed to capture and store runoff from various surfaces such as roofs, paved areas, and lawns, and use it for non-potable purposes like irrigation, toilet flushing, and cleaning. By effectively managing and utilizing stormwater runoff, rainwater harvesting systems can reduce dependency on external water sources, mitigate stormwater runoff, and promote sustainable water management practices.