Put an addition on my house and added to my basement as well. Where the new foundation meets the old one, there is water leaking in. I was able to seal the corner seam inside with hydraulic cement and that worked well, but the water just comes in a different spot to the right.

I was thinking of rather than a traditional French Drain, that I could drill some holes in the bottom block. Then on the slab create a channel for the water to flow to the sump. The channel would be a small concrete barrier, filled with gravel. Then topped with concrete. It will follow the red line in the picture and look like a concrete small step when it’s done. Any thoughts on this? picture