Lucky for you, topography doesn't change very much. The old topo maps should be fairly accurate even though they're old. However, if you really want to check out a hunting area, I would suggest downloading Google Earth. It's a free download that allows you to view ariel photos of the landscape, as well as change the viewing angle so you see a 3D image of the landscape! It is a scouting tool every hunter should have. Check it out at: http://earth.google.com/

I use google earth myself. You can try a similar version just by going to the google homepage and putting in the adress or town find the closest road then you can choose the satelite option and I believe there is a topo selection as well. Not as in depth as actual google earth!

Last year I gave my grandfather a laminated aerial phot map of our families property. I researched the land plots and made some calls and emails to the county. The county put me in contact with a different department and I was able to buy one from the county. It was the best gift that I have ever given.

Googlemaps are as good as any.