Maximum is a guess.
The Dam is located about two-thirds of the way down this run. You will see the horizon line after a long flat pool. You can run the Dam on the far left which is about a 7 ft drop or on the far right which is scrapy slide drop of about 5 ft. You can also bang down the overflow channel on the right if its not blocked by debris.
There is currently a large tree blocking the left side of the dam which has revealed that the ledge is badly eroded and undercut. It almost looks man made but either way its definitely a cave like feature under there. We have ran this side many many times with out incident but just be aware!