A friend told me about Cal topo and how I can add different maps/layers. I figured I could use these for hiking as well for rafting. It's a little overwhelming with all the options and so forth. It seems that the FS TOPO16 shows a lot of detail. Is anyone else using the FS 16' or have any suggestions for adding different layers?
Yeah, it's my go-to. If you're just looking for topos, just use it as an easy interface for whatever topo looks best for your particular mission; don't screw around much with layers and transparancies. For backcountry skiing, I find the slope angle shading invaluable for finding safe routes etc.
Use it all the time for making river maps. Its nice cause you can mark your waypoints for camps, rapids, etc., and download them as a .gpx file, which you can upload into a gps unit or app. Another mobile app I love is Gaia GPS.