Boulder Canyon Dam

Boulder Canyon Dam is a location in Hooverville and is the setting of the finale of JumpStart Adventures 5th Grade: Jo Hammet, Kid Detective.

At the climax of the game, it is revealed that Dr. X intends on blowing up the dam to wipe out all of Hooverville. Jo Hammet arrives at the dam just in time to activate a switch that diverts all the water away from the city. She also discovers Martin and his uncle the Janitor both tied down next to the bomb. Whilst freeing them, Jo is confronted by Dr. X face to face for the first time. The trio run past the doctor, caught in a maniacal rant, to escape the bomb's blast radius in the nick of time. Looking back as she runs away, Jo discovers that Dr. X has mysteriously disappeared at the last second.

Trivia

 * Boulder Canyon Dam, located just outside of Hooverville, appears to be based on Hoover Dam, which in turn is located just outside of Boulder City, Nevada.
 * Hoover Dam also happens to have had the name Boulder Dam from 1933 to 1947, when its name was changed to its current one. This means both dams were at one point or another, named after a location called Boulder Canyon.
 * It is possible to click on the dam on the Hooverville map screen from the very beginning, but Jo will always inform you that she can't go there as she's on a case. Given that the user can't ever seem to go there and its looming presence over Hooverville, one can deduce early on that something important will eventually happen there.