

hi there,
getting a big downpour here in vic and woke up to the grass flooding essentially. I’ve got one tiny storm riser in the corner of the grass but it’s clearly not going to everything from a 100m2 of lawn. The grass definitely is not even. Lots of low spots and there is pools in every one of them so I was going to try and even it all out in spring with sand but feeling I need drainage as well. I’ve swept a big amount toward the drain but I can’t be doing this every time it rains. What would be the best solution. Trench and add more storm risers or agi drain?
would I go across the whole lawn?