RedactedNarrative: Watercraft #1 was southbound and headed toward upper Prior Lake. Watercraft #2 was northbound and headed toward lower Prior Lake. Under the wagon bridge in the City of Prior Lake, the two boats collided at low speeds in a no wake zone. Operator #1 stated they drifted into WC #2. Operator #2 stated WC #1 veered into them so that it was not a side swipe, but nose of WC #1 hit the pontoon on WC #2 at a 45 or so degree angle. Operator #2 stated then WC #1 began backing up and bouncing around striking the bridge columns. Operator #1 later stated drift was caused by two engine powerful boat. The deputy thought the accident was caused by Operator #1 throttling one of the engines harder/unevenly. Both watercraft received damage. Life jackets were not being worn, and there were no injuries. Alcohol was not a factor.