You're using your scooter to navigate the flood because you're on patrol. You're one of the few people with a floating scooter, so it's your job to patrol the flood waters and look for people and animals that need help.
You have to patrol all of the floods in June (じゅん). Unfortunately, that's the month when most of the floods in Japan happen, so you end up on patrol a lot.
Currently there are no similar looking kanji which exist in the WaniKani learning system