Regarding child safety, you may want to make sure that any gates leading from your property to the canal are child proof and take the same precautions as you would if you had a pool on your property.
Check the local crime statistics around that canal area. Also, speak with some of the neighbors or local law enforcement regarding your concerns.
As for joggers/ bikers being a nuisance or privacy issues, seems like that would be a personal question. Each person may have a different tolerance level for something being a nuisance or not.
Best of luck!
i would walk the area you are thinking of purchasing and you will see people on homes by the canal and strike a conversation and ask them all this questions , do it a few times and will give you a
great idea of the area