THE BASS COLLEGE

Im looking to buy topo maps of the river anyone know where I can buy one?

You need to look in the Maps section and in Maryland section here. I think you my like this here  This is better thn any maps and you can print it out.  But If you want paper maps we have them also here

These here are PREMIUM Maps <<click

locally. Mares marine in fredricktown used to have Potomac Maps as well, and they have them at Smallwood State Park at times.

Nothing beats a good GPS chip but if you want a foldable map you cannot beat the Tidal Potomac PRO MAP from GMCO:  http://www.geomart.com/products/nautical/gmco.htm#order