Alabama Water Quality Information System

— Choose a Frequently Asked Question (FAQ) —


	1.-		Can a mine operator take gravel from the flowing water in a stream?


	2.-		Can air pollution cause a reduction in rainfall?


	3.-		Can altering surface drainage and flow around or into sinkholes affect groundwater supplies in karst terrain?


	4.-		Can dredging be beneficial to the aquatic ecosystem?


	5.-		Can dredging do any harm?


	6.-		Can greenhouse warming affect availability of surface water resources within some areas of the United States?


	7.-		Can I take sand or gravel out of a stream or do I need a permit from anyone?


	8.-		Do dams play an important role in managing water resources?


	9.-		During what period were most dams built in the United States?


	10.-		How are aquifer drawdown and stream depletion response functions determined?


	11.-		How are diversions used to reduce potential flooding?


	12.-		How can developing new water-supply reservoirs impact water quality?


	13.-		How can natural stream system storage capacity be altered to reduce potential flooding?


	14.-		How can overdrafting of groundwater cause problems?


	15.-		How do increased water demands cause a loss/reduction of wetlands and riparian habitats?


	16.-		How do you measure river depletion response to aquifer pumping?


	17.-		How does excessive water use affect water quality?


	18.-		How has water use in the western U.S. affected stream systems?


	19.-		How have dams affected river system fisheries?


	20.-		How many dams are there on planet earth?


	21.-		How many major water storage dams are there in the United States and what is their condition?


	22.-		How many types of dams are there?


	23.-		Is the dam building era for major river systems over in the United States?


	24.-		Is the era of major hydroelectric power development projects over in the United States?


	25.-		Since humans play a role in locally modifying the earth's hydrologic cycle how does water consumption from urban development and intensive agriculture compare to water consumed naturally by local vegetation?


	26.-		What are dykes or levees and how do they reduce flood damage?


	27.-		What are some of the benefits and potential problems associated with stream channel modification?


	28.-		What are some results of water diversion from its natural location by humans?


	29.-		What controls the degree of surface and ground water interaction?


	30.-		What effect can a dam have on the water quality of a river system?

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This website was developed by the ACES Water Quality Team, under the leadership of Dr. James E. Hairston. It is funded, in part, by USDA-CSREES water quality grant support under Section 406 of the Agricultural Research, Extension and Education Reform Act of 1998.