What is the largest reservoir in the United States?
Lake Mead, located on the Arizona-Nevada border, is the largest United States reservoir with a volume of 29,000,000 acre feet. However, Lake Powell, located in the state of Utah, is the longest reservoir with a length of 186 miles. 9. Which of the following sources stores the greatest volume of fresh water worldwide: lakes, streams or ground water? Groundwater comprises a 30 times greater volume than the 30,000 cubic miles of water contained in all freshwater lakes, and more than 3,000 times the 300 cubic miles of water in the world’s streams at any given time. Groundwater issues are important to virtually all National Park Areas and are especially important in Cave and Karst parks. 10. How was Half Dome in California’s Yosemite National Park formed, and of what rock type is it composed? Half Dome is a 2,200 foot-high granite monolith. The sheer rock face of Half Dome is the result of glacial erosion in the Yosemite Valley approximately 250,000 years ago. 11. What is acid rain? Acid ra
