The massive lake was roughly round with a panhandle on the side nearest the fortress.
Martinsburg, in the eastern Panhandle, has nearly the same means, 32° and 74°.
In the area of the Newer Appalachian Mountains, the eastern Panhandle region has a forest similar to that of the plateau district; but between these two areas of hardwood there is a long belt where spruce and white pine cover the mountain ridges.
In the Ohio Valley and eastern Panhandle the summer mean temperature is 74°, the winter mean 31° to 34°.
Precipitation is greatest in the mountains, over 50 in.; and least over the Ohio Valley, the eastern Panhandle and the extreme south-east, 35 to 40 in.