Asked: I need help on Pokemon Black.?

I've just beat Gym 6 in Black (Skyla). My team has a Fire-type, Grass Type, Ground/Dark type, Electric Type (temporary?), Flying Type, and Psychic Type. I need a good Water Type to complete my team. My team's levels range from Level 34-36. What's a good Water Type near the city that doesn't take forever to train?