I have something similar on my other website and folks like to use it to plan coffees and get togethers.
I don't know if there will be any interest here but we'll give it a shot!
On the top menu row between Portal and Donations it says "MemberMap". Either click that or click here: http://www.power-sur...p?app=membermap
It's available only to signed-in members who have validated their accounts.