1/2 inch gap around perimeter of basement floor
We recently had some heavy rains and our basement flooded. The floor is concrete and the walls are cinder block, it is not finished. There is a 1/2" gap around the perimeter of the basement and we think that's where the water came from. The house has a wraparound porch, is waterfront and around 300ft away from the shore, on a slight incline. It has gutters and downspouts, and we made sure the downspouts directed water further away than normal from the house to avoid water under the porch. Can anyone tell me what that gap is for, should/could we seal it? Thank you for any and all information.