Hoping someone here has a water garden...we inherited it when we bought this house.  Unfortunately, I don't really know a lot about maintenance and upkeep but I'm picking up a little here and there.  I put a few goldfish and shubunkins in there and they actually spawned and now we have three little baby fish that are so cute!

Here's a side view where I dug out a space for a garden:

My water lilies and water hyacinth:

wow. your pond is so lovely. Actually, from the looks of your backyard... it seems very serene. Unfortunately, I know nothing about ponds. Just thought I'd stop by and pay you the compliment =)