This is a simple interactive graphic to see if you know the old geography of West Boylston (pre-reservoir) in relation to the new (post-reservoir). Select any point on the map of West Boylston from 1892, and you'll be told whether you're on dry land or are taking an unexpected dip in the Wachusett Reservoir in modern times.

Topological Map of West Boylston, 1892
(before the reservoir construction),
courtesy of the University
of New Hampshire