Actually they are indications of pure air but also lichen on a tree indicates that the tree may be in declining health. Lichen is a combination of algae and fungus and grows very very slowly. Moss is an indication that there needs to be some better air circulation on that tree. Consider a good pruning in early spring.aving lichens and moss on your tree is an indication that the air around your tree is healthy and clean. They do not harm the tree. They have synergistic relationships with the biosphere of the tree that are more interesting if you leave them there.
Officials said Nevadaâs Lake Mead, the 79-year-old reservoir created by the massive Hoover Dam, registered 1,074.98 feet (327.7 meters) above sea level late on Tuesday, but was able to rise above a critical mark by early on Wednesday morning.
Cherokee Lake, also known as Cherokee Reservoir, is a reservoir in Tennessee formed by the impoundment of the Holston River behind Cherokee Dam. The reservoir has a surface area of about 28,780 acres (11,650 ha), a flood-storage capacity of 749,406 acre feet (924,379,000 m3), and nearly 400 miles (640 km) of shoreline. In a normal year, the lake water level fluctuates over a range of about 27 feet (8.2 m). Cherokee Dam is a Tennessee Valley Authority dam intended for hydroelectric generation and flood control. The dam was built on a crash schedule; construction started August 1, 1940, and was completed on December 5, 1941.