Used this to run White Plume Mountain in Tales From The Yawning Portal for 5e. The only reason it's not getting five stars is because I had to take the time to edit blue into the squares with shallow water myself since I knew I would forget to keep track of it otherwise. Still, that's a pretty minor complaint when considering 95% of the work was already done for me for the low-cost of a pair of quarters. If you plan on running WPM and don't mind spending a couple of evenings cutting these out, highly recommended.
[4 of 5 Stars!]