I am in the Arbutus area, in SW Baltimore County, near Lansdowne, Catonsville, Halethorpe, Linthecum and not terribly far from Pasadena.
Lots of places. Personally, I think I am going to get a water detector and hunt in the rain, at night.
There is a site linked from this one that gives the laws. It seems beach detecting is pretty cool, except from May 30 thru August. Other areas often need permits but, if we go offseason, we might be able to sweet talk the Ranger.
I am retired now, but had health problems and not detecting much for years. But have recently had some big improvement physically, which makes me interested again.
Anyone in the area, who wants to communicate, PM me.