If your lawn is getting too much water, there are a few signs to look out for. The first is puddling or standing water on the surface of the lawn. This can happen if you're watering for too long or too often, and it can lead to the development of mold and mildew. Another sign is grass that's growing taller than usual; this could be a sign that the roots are receiving too much moisture and are starting to rot. You may also see an increase in weeds, as they tend to thrive in wet conditions. If you notice any of these signs, it's important to cut back on watering and allow the lawn to dry out somewhat before watering again.