Close this window. The 1984 National Minimum Drinking Age Act, [23 U.S.C. Â§ 158], requires that States prohibit persons under 21 years of age from purchasing or publicly possessing alcoholic beverages as a condition of receiving State highway funds.
Desert soil is thin and dry and cannot absorb a sudden rainstorm and there are few plants to absorb water. The rain rushes down hillsides and mountains and overflows arroyos, flowing into roads and homes in its path. They can occur suddenly and areas far from the actual storm can be flooded.esert soil is thin and dry and cannot absorb a sudden rainstorm and there are few plants to absorb water. The rain rushes down hillsides and mountains and overflows arroyos, flowing into roads and homes in its path. They can occur suddenly and areas far from the actual storm can be flooded.
A flash flood after a thunderstorm in the Gobi, Mongolia. A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins.It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm, or meltwater from ice or snow flowing over ice sheets or snowfields.lash floods most often occur in normally dry areas that have recently received precipitation, but may be seen anywhere downstream from the source of the precipitation, even many miles from the source.