I am looking online for a map of a lake in south dakota. it isnt a huge lake but it is a decent sized public lake called dog ear lake in south central south dakota. I am looking for a map of the lake to find out where the spring is in it that i was told about by my grandfather but he did not remember where it was. I was wondering if any of these online topo map places would have a map that would show me what i wanted. I have searched and i have found sites that say they have dog ear lake but i want to make sure it is a map of the lake and not just the area around it. Anyone recommend any sites or have any info on finding information? thanks guys