22+ Grading Backyard Drainage Background. Backyard drainage design is essential and not something to ever overlook; Learn yard grading techniques now to prevent water drainage problems later.
Keep in mind that backyard drains aren't connected to the main drainage system of your city.
The grade must be sufficient for water determine the grade of your trench by holding a level within the trench so that it is horizontally level. Surface and subsurface drainage and landscape grading solutions for residential & commercial properties in northern nj. If groundwater collects in the yard. And for yards with drainage problems that can be a soggy mess.