For many years I traveled to the US, sometimes 2 or 3 times every year. The purpose was almost always vacations although there have been a business trip in between. If you saw my road trip vlog, you would know by now that I like to visit Arizona and along the way I passed Hoover Dam. The second time I visited, I decided to compare water level in the videos from a previous vacation and got interested since it was at the height of the drought in California. That video got quite popular so I decided to expand on that and make a few more.