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what are the positive and negative affect of a sinkhole
How do you measure sinkholes
The Grand Canyon averages 10 miles in width. Its narrowest point is in Marble Canyon, where it is 600 feet wide. Its maximum width of 18 miles is found at several different points.
canyon
Sinkholes are formed when the supporting water table runs dry and the ground no longer has this strata to stand on. This happens in the states of Florida and Georgia in the US because they have more underground rivers than most. The ground simply collapses down the now dry rivers that were once filled with water. These are the first real signs of a major drought.