Downspout’s that are directed underground and or which pool water near the foundation can be a major cause of basement flooding. Redirection of a downspout is typically an inexpensive fix.
There are companies who can redirect your downspout’s or you can do it yourself…check out the YouTube Video.
Neighborhoods are requiring home owners and builders to direct all downspout’s above ground, away from the foundation and to ensure that these downspout’s do not become a trip hazard and are not directed to your neighbors house.
You may also want to check with your specific Municipalities Basement Flooding Programs, they may have rebates on redirecting your downspouts – City of Toronto, Halton Region, Region of Peel and City of Vaughan.