This Achievement Requires You To Drain All The Water Out Of A Lake.
- I Used 4 Waterpumps And Let It Go For A While.
There Is An Event That Creates A Sinkhole Under One Of Your Lakes.
- Choosing The Option "Do Nothing" Drastically Reduces The Water Level In Said Lake, Making This Process Much Faster.
Make Sure Not To Use The Rain Cloud Power Over The Lake, Or It Will Fill Up Again
- At A Rate Of 10 Water Units Per Second.
Takes A While, Achievement Pops The Moment The Lake's Dry.
Good Luck!