You'll need to consider things like breeding ground for West Nile mosquitoes and safety if you create a pond.
The latest WE&T magazine touches on stormwater management and West Nile Virus, so you may want to read-up on that. It suggests making sure your dissolved oxygen levels are high to interrupt the breeding cycle of the mosquitoes who carry West Nile.
Your local ordinances may carry some very specific safety concerns over open bodies of water. Consider things like fences, alarms, etc.
Jeff Cantwell
JeffC@isco.com