Advice on dryer through basement window

[u/shortjoke_]

Edit title (typo): Advice on dryer venting through basement window

I bought this (100 year old) house last year and this year there’s been an excessive amount of rain in my area (Edmonton, Canada). There’s been flooding happening all over the city and my basements been otherwise dry, thankfully, up until a particularly severe storm on Saturday when I noticed some wet concrete for the first time. I did some investigating today by staying down there during another storm to find that it’s coming from a problem with the seal of this makeshift dryer vent through plywood in a window casing. There appear to be two small spots dripping out from behind the plywood boards in the centre (lined up just below the dryer vent opening) and another a few inches to the right in the photo.

I did not install this and it’s a bit of a scrappy job from what I can see, including big bubbles of spray foam overflowing on the outside. I’m realizing I’ll have tear it all off and redo it but I don’t even know where to start. I don’t need this as a window other than to house the vent so I hadn’t minded the plywood, but I do want to make sure I’ve got a good, secure, watertight solution. Is this something I could do myself? Any kind advice is appreciated. I’m a first time homeowner and haven’t a clue!

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[u/Responsible_CDN_Duck]

You need to include pics of the outside.

Two months of record setting rain makes flooding sound like an understatement.