The answer to 'drainage system thin grass' is that a poorly functioning drainage system is a common cause of thin, patchy grass. Excess water from poor drainage can lead to soil saturation, root rot, and nutrient depletion, resulting in thin, unhealthy grass. Symptoms may include standing water, muddy soil, and grass that appears yellow, wilted, or sparse.
To fix this issue, the first step is to inspect your drainage system. Check for clogged or damaged drains, gutters, and downspouts. Ensure water is properly directed away from the foundation. If the problem persists, you may need to install additional drainage features like French drains, dry wells, or swales to improve water flow. Aerating the soil and overseeding the lawn can also help thicken the grass once the drainage is addressed.