Here's an example of why one should not depend on Google Maps for aviation information. Google not-so-helpfully sites the Harrison Hot Springs Water Aerodrome in the middle of a forest. I believe you have to click "view larger" to see the label.
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I often have a look at a place I'm going in Google Maps, to get an idea of what it looks like, the size of the town, if there's a beach or swimming area. Had I been the pilot looking for the Harrison Hot Springs waterdrome, a quick look at the satellite view would probably have clued me in that it was mislocated. It would probably be better to put down on the lake if a water landing is your intention.