If you tip regularly at the time of service throughout the year, you may feel inclined to give your house cleaner a smaller bonus at Christmastime. This may be appropriate if you tip sufficiently throughout the year to consider your regular generosity an adequate demonstration of your appreciation.
Hoover Dam is in the Black Canyon of the Colorado River, on the border between Arizona and Nevada in the USA. == == At the bottom or southern end of Lake Mead at the Nevada-Arizona border. Located in the Black Canyon on the Colorado River, Hoover Dam lies about thirty miles southeast of Las Vegas, Nevada.
Hoover Dam. Hoover Dam, formerly called Boulder Dam, dam in Black Canyon on the Colorado River, at the Arizona-Nevada border, U.S. Constructed between 1930 and 1936, it is the highest concrete arch dam in the United States. It impounds Lake Mead, which extends for 115 miles (185 km) upstream and is one of the largest manmade lakes in the world.