Hey Tow,
Yup, you have the right spot. When you just cross the bridge traveling towards Jacksonville look to the left, and you will see foundations of three old bungalows. They were the starting point for my exploring of the site. If you pull off the road just as you cross the bridge, and park, you will find the ruins of the old Methodist church. If you walk down the hill from the dirt parking lot, you will come to Warren cove. Herring Hill is on the other side of Warren cove, and there are foundations and depressions there also. Walking into the woods from the end of Warren cove will take you to the bungalows, via old Warren road.
Check out this link to the BCPL Legacy web and type in Warren Village, or Warren. You will be loaded down with period photographs.
http://external.bcpl.lib.md.us/hcdo/lw_home.html
Hope this helps you out.
Also, if you get a chance, check out the Baltimore County Historical Society in Cockeysville . They have maps, photos, and newspaper articles about the village.
Bungalows.
http://external.bcpl.lib.md.us/hcdo/cfdocs/photopage.cfm?id=10478
This place has been on my mind ever since I was a kid, when I first learned about the town under the lake, from my brother and his friend. I have yet to detect there because I was told that DNR and Baltimore watershed police have been patrolling the area. Since the city owns it, permission is most likely needed, but probably not granted.
There is good stuff to find there, though. I have found horseshoes, axe heads, a toy pistol made from iron, bottles, and rusted 1921 Maryland license plate, pottery shards, china, etc. Most of this was found ON TOP of the ground. The place was getting hit really hard by bottle hunters who knows what they may have found.