An except for the San Joaquin river near Mammoth Lakes looks like this:
When I look at the same place with the interactive map at postholer.com, it looks quite different:
The latter map appears to be from mytopo.com. I see a number of differences:
- The USGS map has more rivers
- The USGS map shows elevation in feet, whereas the mytopo map shows elevation in meters (I personally prefer metric)
- The mytopo map contain what I suppose is a hiking trail (I didn't check the legend), this is not shown at the USGS map
- The mytopo map uses shading and draws some contours with a thicker line
Mytopo writes that their maps are made from the original US Geological Survey topographic maps, yet the two excerpts printed here do not show the exact same information.
Are there other map series besides those two? For hiking on- and off-trail, what map is most accurate and complete?