How effective is a French drain in clay soil for managing water drainage?

A French drain can be effective in managing water drainage in clay soil by providing a pathway for water to flow away from an area. However, the effectiveness may vary depending on the specific conditions of the soil and the installation of the drain. It is important to consider factors such as the depth and slope of the drain, as well as the presence of any obstructions that may impede water flow. Consulting with a professional can help determine the best approach for managing water drainage in clay soil.