The four primary watercourses within the Village of Lions Bay are:
- Magnesia Creek
- Alberta Creek
- Harvey Creek
- Rundle Creek
The Village's drainage system is designed to rapidly collect and conduct rain and groundwater away from roadways and residences to these nearby creeks thereby alleviating damage and protecting life and property.
Over time the use of inferior pipe materials, encroachments, driveway culvert installations with inadequately sized pipes, and infilling of open ditches has led to serious defects within this system. Public Works is actively working to correct deficiencies as resources allow.