The answer to 'drainage system bare spots' is that there are several common causes, including poor soil drainage, excessive foot traffic, and improper installation. Symptoms may include standing water, muddy soil, and thinning or dead grass in certain areas. Solutions can range from improving the drainage system, adding soil amendments, or re-seeding the affected areas.
If the issue is due to a problem with the drainage system itself, such as clogged or damaged pipes, it's best to call in a professional landscaper or drainage specialist to assess and repair the system. For less severe issues like soil compaction or bare spots, homeowners may be able to address the problem through DIY methods like aerating the soil, adding topsoil or compost, and overseeding the affected areas.