The answer to 'drainage system erosion' is that it is a common problem caused by issues like clogged drains, heavy rainfall, or poor grading that leads to water accumulation and soil erosion around the drainage system. Symptoms include standing water, muddy areas, and visible erosion around drains. Solutions can include clearing debris, improving grading and drainage, and repairing or replacing damaged drainage components.
In many cases, minor drainage erosion can be addressed through DIY maintenance like cleaning gutters and drains. However, more significant issues may require the expertise of a professional landscaper or drainage specialist to properly diagnose the root cause and implement a long-term solution.