RF signal over the water

Dear all,

I would like to transmit data at 433MHz over water (a lake). Will it work or I will get a lot of reflecting waves that will distract the transmittion?
How can I make it work? what frequency should I choose?
I want it all be small and chip. I want to buy a ready module at specific frequency.

Thanks ahead

It will work perfectly, much better than over land which will be full of obstructions.

Well, not quite. Read up on **broken link removed**. 433MHz is subject to this issue.