Lake Elsinore is about 40 minutes away by Ortega highway 73, otherwise you take the freeways and gamble not hitting traffic.
There is a another lake in Mission Viejo and some more smaller bodies of water areas plus it is close to Laguna Beach.
If you are looking at homes on Trulia there is usually a map spot on the page where you can see how close they are. Just pan out until you see the lake.
If you are looking at an mls print you can usually double click on the address and it will take you to the map of the property.
Give it a try,
Prudential CA Realty