Which practice is key to preventing erosion on a construction site?

Implementing proper drainage systems is fundamental to preventing erosion on a construction site. Effective drainage controls direct water away from disturbed areas, minimizing its ability to carry soil particles with it. When rainwater is allowed to accumulate or flow over unstable soil, it can erode the topsoil, leading to loss of productive land and harming the surrounding environment.

Proper drainage systems help manage and control the flow of water, reduce the velocity of runoff, and can be designed to capture sediment before it has the chance to wash away. When installed correctly, these systems not only protect the construction site but also help in maintaining the integrity of nearby ecosystems by preventing sedimentation in rivers or streams due to runoff from the site.

While other practices can offer some erosion control—like covering soil with tarps or using certain machinery—they may not address the underlying issue of water runoff as effectively as a well-planned drainage system does. It's important to maintain soil stability and integrity throughout construction processes, making drainage an essential focus for erosion prevention.