I am having a drainage problem adjacent to my back patio. We had leveled our yard with sand ~ 1 year ago, and that has leveled most of the back yard, but the water collection prior the leveling has not improved. We have french drains on one side of the patio that have not been extended the length of the patio. I am attaching some pics. What are my options? My thoughts are
1) Extended the french drains.
2) Extend the patio
3) Graveling the edge of the patio