Wartortle evolves what level?

Wartortle evolves into Blastoise starting at level 36. (Squirtle evolves into Wartortle starting at level 16.)

Wartortle is #8 in the National Pokedex, and was introduced in the Generation I Pokemon titles (Red, Blue, and Yellow) where it evolved from Squirtle, one of the starter pokemon. In Generation VI (X and Y), it is available through a Water-type Friend Safari.