Contour Lines: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in feet, or meters, above sea level). profile may be constructed quickly and accurately across any straight line on a map by following this procedure: a. Lay a strip of paper along a line across the area where the profile is to be constructed. b. Mark on the paper the exact place where each contour, stream and hill top crosses the profile line.
During may you will find snow at the North and South pole. It will also snow in high lying areas such as some mountains. Many people forget that while in May that while the Northern Hemisphere is experiencing spring (which in some places means there is still snow), the Southern Hemisphere is experiencing winter.
for denver's nine month snow period of september through may, march ranks as the snowiest month and typically accounts for 20 percent of the annual snowfall. denver normally collects 10.7 inches of snow in march based on averages from old stapleton intl airport (1981-2010 averages), however march is known for the biggest snowfall events to hit the region. in recent history for example, march 1992 and 2003 come to mind for most.