water problems

Information about water problems

Published on November 21, 2007

Author: BAWare

Source: authorstream.com

Content

Water Resources:  Water Resources 1. Hydrologic Cycle and Water Reservoirs 2. Floods and Flood Control 3. Use of Water 4. Water Composition 5. Water Problems Who Owns the water?:  Who Owns the water? Surface Water Riparian Rights in the Eastern U.S. Prior Appropriation in the Western U.S. Ground Water English Rule of Absolute Ownership American Rule of Reasonable Use Western Correlative Rights American Rule:  American Rule Reasonable Use. The reasonable use rule, or American rule, was developed in the 19th century. Under the American rule landowners are entitled to use ground water on their own land without waste. If their use exceeds this ''reasonable use," the landowner is liable in damages. The American rule may still be followed in a few eastern states, although it is being judicially replaced by the eastern correlative rights doctrine. The reasonable use doctrine is part of the ground water jurisprudence of Nebraska, Arizona, and California. Western Correlative rights:  Western Correlative rights Western Correlative Rights. The California doctrine of correlative rights also initially developed in the 19th century but has continued to develop. Under the correlative rights doctrine, if the ground water supply is inadequate to meet the needs of all users, each user can be judicially required to proportionally reduce use until the overdraft is ended. The policy significance of correlative rights is that each well owner is treated as having an equal right to ground water regardless of when first use was initiated. Potential Water Problems:  Potential Water Problems 1. Limited water supplies in an area 2. Groundwater depletion 3. Soil Deterioration 4. Surface Water Pollution 5. Ground Water Pollution English Rule:  English Rule Absolute Ownership. The earliest judicial theory of ground water rights is the doctrine of absolute ownership, also referred to as the English rule. Under the absolute ownership doctrine the landowner is, by virtue of land ownership, considered owner of the ground water in place. Thus in absolute ownership jurisdictions a landowner may pump as much ground water as possible, without regard to the effect his pumping has on neighbouring landowners. 1. Limited water supply:  1. Limited water supply Examples include The Colorado River The Aral Sea Euphrates River (Turkey, Syria, Iraq) Colorado River Compact:  Colorado River Compact Wy, Co, NM, Utah Ariz, Calif, Nevada Mexico Slide10:  Look to your notes morton Aral Sea:  Aral Sea Aral:  Aral Turkey, Syria, and Iraq:  Turkey, Syria, and Iraq From Wikipedia:  From Wikipedia The Southeastern Anatolia Project in Turkey involves the construction of 22 dams and 19 power plants by 2005, the biggest development project ever undertaken by Turkey. The first of the dams was completed in 1990. Southeast Turkey is still struggling economically, adding fuel to the discontent expressed by Turkey's Kurdish minority centered there. The Turkish authorities hope that the project will provide a boost to the region's economy, but domestic and foreign critics have disputed its benefits as well as attacking the social and environmental costs of the scheme. In Syria the Tabaqah Dam (completed in 1973 and sometimes known simply as the Euphrates Dam) forms a reservoir, Lake Assad that is used for irrigating cotton. Syria has dammed its two tributaries and is constructing another dam. Iraq has seven dams in operation, but water control lost priority during Saddam Hussein's regime. Since the collapse of Ba'ath Iraq in 2003, water use has come once again to the fore. The scarcity of water in the Middle East leaves Iraq in constant fear that Syria and Turkey will use up most of the water before it reaches Iraq. As it is, irrigation in southern Iraq leaves little water to join the Tigris at the Shatt-al-Arab. Google Earth 36°0′N 38°35′E 2. Groundwater Depletion:  2. Groundwater Depletion Results in Drawdown Land Subsidence Salt water intrusion Groundwater Drawdown:  Groundwater Drawdown Water withdrawal>Water recharge:  Water withdrawal>Water recharge This results in Water Mining Example: Ogallala Aquifer Slide21:  http://water.usgs.gov/ogw/pubs/fs00165/ Slide22:  http://pubs.usgs.gov/circ/circ1186/html/gw_dev.html#aquifer SW Kansas:  SW Kansas Panhandle Texas:  Panhandle Texas Ground Water Depletion, Chicago:  Ground Water Depletion, Chicago http://ga.water.usgs.gov/edu/gwdepletion.html Slide28:  Locations in the basins of southern California, Nevada, Utah, Arizona, and New Mexico where substantial ground-water level declines have been measured. In some areas, water levels have recovered in response to reduction in pumping and increased recharge efforts (Leake and others, 2000). Subsidence due to Groundwater Depletion:  Subsidence due to Groundwater Depletion http://www.geotimes.org/july01/sinking_titanic_city.html http://ga.water.usgs.gov/edu/earthgwlandsubside.html:  http://ga.water.usgs.gov/edu/earthgwlandsubside.html http://jameswagner.com/gallery/mexico-city-2004/IMG_2693:  http://jameswagner.com/gallery/mexico-city-2004/IMG_2693 Slide32:  http://www.unep.or.jp/ietc/publications/short_series/lakereservoirs-2/9.asp http://ga.water.usgs.gov/edu/sinkholes.html:  http://ga.water.usgs.gov/edu/sinkholes.html Ground Water Decline, USA:  Ground Water Decline, USA Slide35:  This earth fissure formed on Rogers Lake at Edwards Air Force Base, California, in January 1991, and forced the closure of one of the space shuttle’s alternative runways. The fissure has been attributed to land subsidence related to ground-water pumping in the Antelope Valley area (Galloway and others, 2003). http://pubs.usgs.gov/fs/fs-103- 03/JBartolinoFS(2.13.04).pdf What does the subsidence cause?:  What does the subsidence cause? Damage to well-casings Structural damage to buildings/roads/bridges Movement of buried cables Changes in slopes and efficiencies of canal systems and irrigation systems Increased susceptibility to flooding Reversal of aquifer flows Salt Water Intrusion a. in Coastal areas:  Salt Water Intrusion a. in Coastal areas http://ga.water.usgs.gov/edu/gwdepletion.html Slide38:  When fresh water is withdrawn at a faster rate than it can be replenished, a drawdown of the water table occurs with a a resulting decrease in the overall hydrostatic pressure. When this happens near an ocean coastal area, salt water from the ocean intrudes into the fresh water aquifer as shown in the diagram. The result is that fresh water supplies become contaminated with salt water as is happening to communities along the Atlantic and Gulf coasts. Slide39:  http://pubs.usgs.gov/circ/2003/circ1262/#figurecaption44234224 Slide40:  Figure 10. Along parts of the Atlantic coast from Maine to Massachusetts, broad lowland areas were flooded by the sea during the close of the last period of glaciation, approximately 12,000 to 13,000 years ago. This flooding occurred in areas that were temporarily depressed below sea level by the immense weight of the glacial ice (Olcott, 1995). As the glaciers retreated and before the land surface rebounded above the present sea level, there was a period during which seawater submerged these lowland areas, and saltwater intruded the unconsolidated sediments and fractured bedrock that formed the inland seafloor. After the land surface rebounded and the ocean receded, freshwater replaced this saline ground water in most areas. However, in some regions of relatively slow ground-water circulation, the saltwater has been trapped in the sediments and bedrock for about 12,000 years (Tepper, 1980; Snow, 1990). Several wells in Maine that are distant from the coast have yielded water with high chloride concentrations that have been attributed to this trapped seawater. http://pubs.usgs.gov/circ/2003/ Salton Sea:  Salton Sea Google Earth here 3. Soil Deterioration:  3. Soil Deterioration Due to irrigation 1. Water logging If you irrigate faster than water can be removed by drainage systems, soils get water logged, water table will and high rates of erosion occur. 3. Soil Deterioration:  3. Soil Deterioration Due to irrigation 2. Salinization Due to high evaporation rates, there will be a build up of salts in the soils 3. Soil Deterioration:  3. Soil Deterioration Poor and inefficient use of irrigation water has resulted in salinization, nutrient depletion and water logging in an estimated 74 percent of the arable lands in Iraq. http://www.usaid.gov/press/factsheets/2003/fs030605.html Desertification:  Desertification Describes the deterioration of previously useful land adjacent to desert regions. This can be due to precipitation changes but generally due to agriculture Nouakchott, the capital of Mauritania :  Nouakchott, the capital of Mauritania 4. Surface Water Pollution:  4. Surface Water Pollution Point Source E.g. metals from an industry Non-point source Agriculture and fertilizer Point Source:  Point Source A. metals B. Hot water C. eutrophication D. Colloform bacteria Non-point Source (Diffuse in UK):  Non-point Source (Diffuse in UK) Mostly agriculture: nutrients, fertilizers, herbicides and pesticides 66% of P and 75% of N come from this source Source: Environment Agency (2005) :  Source: Environment Agency (2005) 5. Ground Water Pollution:  5. Ground Water Pollution 1. Drilling oil and gas wells 2. Salts from irrigation 3. Fertilizer 4. Septic Systems 5. Oil tanks Drilling wells:  Drilling wells Fertilizer:  Fertilizer Inactive mines:  Inactive mines Septic system:  Septic system Oil Tanks:  Oil Tanks World Poor Water:  World Poor Water www.worldmapper.org http://www.patp3.webbler.co.uk/doc.php?id=606:  http://www.patp3.webbler.co.uk/doc.php?id=606 Threat of mass arsenic poisoning in Bangladesh

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