See photo...
House is 6 years old. Starting a few months ago, when we get a heavy rain, a water line will form on the basement wall (poured basement). It doesn't appear to be 'flowing' - just wet to the touch. Nothing on the floor. No cracks - just a water line. An hour after the rain stops, the water line disappears. The location is on the back basement wall - under my deck.
I took a few deck boards out but didn't see any pooling of water. Below the deck is gravel with garden/weed fabric underneath.
Any ideas??