Here's pictures of what's happening – taken yesterday (June 1st 2015).
I'm struggling with water drainage problems on this old gravel driveway.
When it rains – all the water streams from the street then pool next to the garage and only then runs to the side of the property.
In the spring, water runoff is stronger – so my garage has been flooded…
Could you advice what do I install along the road to prevent water from coming in? Just add more gravel?
P.S. also – gravel seems to be so old – it's not porous anymore – it's literally fused into the ground
Best Answer
It looks like your land sits a little lower than the adjacent roadway. It would be a cost but if you pave the first 10 ft of your driveway you can make a little berm with that pavement. Since pavement is non-porous the amount of water to overcome a couple of inches of slope would be substantial. Yet those same couple of inches will not be much to drive over. You really only need 0.5% slope for a couple of feet. While your gravel seems solid it likely has enough space between the rocks for water to pass through. If there is storm sewer nearby you could also look into installing a trench drain. Though that would perform better if your driveway was paved. The water would have a tendency to go around the drain and wash out the soil at the edges. Some interesting links Pennsylvania Code has good stuff on the driveway slopes. This picture is from their site.
This is a trench drain.