Sherman Dam

Sherman Dam is the perfect size for robot melees.

Sherman Dam is a location on Earth in the Generation 1 continuity family.

Fiction

Generation 1 cartoon continuity

Shortly after the Decepticon arrival on Earth, Megatron led his troops to Sherman dam in an attempt to gather energy. He easily captured the facility from its human operators, and sent Rumble to create more energy for the dam's generators by using his pile drivers to make a tidal wave. The other Decepticons then made Energon Cubes from the energy before the waves began to tear the dam apart. Optimus Prime and the Autobots attempted to stop them, but were defeated. As the Decepticons fled, the dam broke. More Than Meets the Eye, Part 2

Sherman Dam had big ceilings and platforms built perfectly for robots the size of cars. This was fortunate.

Marvel Comics continuity

Now where have we seen this before?

(Events in italics occurred in UK-only stories.)

See above. Sometimes referred to as Boulder Dam. Decepticon Dam-Busters!

Dreamwave comics continuity

Seen again via flashforward. The War Within

Trivia

• The dam-battle between Megatron and Optimus Prime is probably their second-most famous animated confrontation, aside from their final battle in the movie. Although not especially well-animated or impressively choreographed in any way, the unusual location and unique weaponry (that was never used again) seemed to have made the fight stand out in fans' minds. Notably, clips from the dam-battle were included in the longer opening sequence used for the first two seasons of the cartoon when it aired in Japan. Perhaps it was this showcasing of the fight that contributed to its memorability and familiarity, at least in Japan - enough for Takara to render the axe and flail as toys for the first time in their PVC figure series and as new accessories for reissues of the original Prime and Megatron toys.
• "Boulder Dam", the alternate name for the Sherman Dam in the Marvel Comics continuity, is actually the pre-1947 name of the real-life Hoover Dam, which also appears in Transformers from time to time.
• A battle at Sherman Dam involving a fight between Megatron and Optimus Prime using their respective flail and axe weapons found some way to happen in three of the four major Generation 1 continuities, and even the movie got a flail, a blade and a dam, although not quite added together in the same way. In other words, IDW, we're waiting.
  
  
  From Teletraan I: The Transformers Wiki, a Wikia wiki.