Question about mapmaking: anyone else spend 14 hours fixing a river that was 9 feet off?
I make hand drawn maps of old rail lines as a hobby, and last month I tried to map the whole Kettle Valley line in BC from memory and satellite pics. Everything was going fine until one river came out looking like a wet noodle with a kink in it, and I could not figure out why. Turns out I had been copying the same off layer from 2019 for 6 hours straight and it was shifted 9 feet west the whole time. I even printed a test page on my little Canon, taped it to the wall, and stared at it for 20 minutes before I saw it. The fix itself took 2 minutes once I caught it, but finding it ate my whole Saturday and most of Sunday morning. So now I want to know, do any of you guys check your base layers before you start drawing, or do you just trust that old files stay put? And if you have a dumb check you run every time, what is it?