title: Verify if a point is Land or Water in Google Maps
body: <p>..and then Google-maps "divide the waters from the waters"</p>
  
  <p>Well, not in the biblical sense but..</p>
  
  <p>I would like to know what options I have in order to verify if a point of [Lat, Lon] is Land or Water.</p>
  
  <p>Google Maps obviously has this data (the bodies of water are blue) - but is there something in the API that I can use for that? And if not - are they not serving it because they never thought of it? Or because it is too complicated?</p>
  
  <p>I have not found any info on the matter - except some similar questions here (like finding type of terrain, or elevation - but it is not exactly what I need).</p>
  
  <p>Is there separated layer for that? An option? Command? Or should I go to do that manually?</p>
  
  <p>The only way that I can think of how to approach this (should I need to do that manually) is to check every served tile for the exact point - and then check RGB value for that Google map hue.
  This is only on theory - because in practice - I have no idea how to accomplish that, the first obstacle being that I do not know how I can convert a pixel location on a tile to [LatLon] point for example </p>
  
  <p>A ready made solution would be much easier.</p>
  
  <p>Note that I do not need ALL the water in the world (for example - I do not care about streams, small ponds, most rivers or your neighbor's swimming pool. I need the points where a person can venture without the aid of a floating vehicle)</p>
  
  <p><strong>EDIT I</strong></p>
  
  <p>After reading comments:
  The elevation method is not reliable, there are too many places BELOW sea-level (you can see a list of the "deepest" 10 here <a href="http://geology.com/below-sea-level/" rel="noreferrer">http://geology.com/below-sea-level/</a> ) and there are too many land-locked water bodies ABOVE sea level (lakes).
  The reverse geolocation method is not reliable because it will return a Geo-political entity, like city, or state - or ZERO many times. 
  I have already looked into those pseudo-solutions before asking the question - but none of them actually answered the question - those methods are bad "guessing" at best.</p>