Causes5

 A high pH level means that the water is turning

more alkaline because the water is lacking CO2.

The pH level is highest at the end of the day

because algae in the pond photosynthesizes and

gives off Oxygen which helps to raise pH. 

Acid mine drainage occurs when mineral deposits

that contain sulfides are uncovered during a

mining process such as strip mining, cavern

mining, or sedimentary (Relating to rocks formed

when sediment is deposited and becomes tightly

compacted. Depending on the origin of the

sediments they contain) mining.



This type of activity can occur when mining numerous amounts of minerals and metals including coal, copper, gold, silver, zinc, lead, and uranium. Many companies are scoring the earth in search of precious metals. 