I have an area of land that was recently renovated and we had the surface replaced with filter sand/dirt (sorry, I don't know exactly what it consists of). We have an upper area (with the dirt filler) and a lower garden area with a ramp between. With recent heavy rain, this lighter filler dirt/sand is being washed away, leaving giant crevices and waterways, washing everything into our lower garden area. What can I do to prevent this deterioration / erosion? (Please see images for details)
I'm an amateur diy enthusiast and have some skills, and would prefer to not rely on paying someone to do it for me if possible.
Thank you.
