This character was formerly an expert in securing, testing, filtering, storing and creating transport containers for precious water. He or she was accomplished at the digging of wells, understanding the patterns in trees, ravines, hills, and vegetation in arid regions in order to better guess where a source of water might be rooted out. There is a 3 in 10 chance this valuable individual also knew the art of water dowsing with a forked stick, and has an 89% chance of finding water in an area with just a witching stick.

Art from page 20 of The Mutant Epoch RPG Expansion Rules book.

https://www.drivethrurpg.com/en/product/499645/the-mutant-epoch-rpg-expansion-rules