More ideas from Peti
Cool idea!!!!  Raised bed with a pond created by Wood BlocX a company in the UK.  Great idea and a water feature would be nice so that the water would not become stagnate.  Moving water keeps the mosquitoes away.  I do think anyone could probably make this on their own.

Raised pond surrounded by a raised garden bed. The plants will shade the pond from the hot summer sun, you can raise tilapia or just a small goldfish pond. Would look great next to the patio/deck or among the raised garden boxes