Windows example. Please note: some municipalities might have different codes. Described is an average requirements across Canada.
Egress Window Drainage System
It’s important to make a proper drainage during egress window installation.
To find out if you have a drainage system on your current window look outside. If you have window well installed and there’re gravels inside it’s most likely has a drain system installed by your home builder. You can test it by pouring the water with a garden hose. If water drains quickly it’s a a good sign that drainage works properly and it’s not clogged.