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Topic: Water table

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	USGS Water Science Glossary of Terms
		ground-water recharge--inflow of water to a ground-water reservoir from the surface.
		With respect to water movement, it is not just the total magnitude of porosity that is important, but the size of the voids and the extent to which they are interconnected, as the pores in a formation may be open, or interconnected, or closed and isolated.
		In water quality, specific conductance is used in ground water monitoring as an indication of the presence of ions of chemical substances that may have been released by a leaking landfill or other waste storage or disposal facility.
	ga.water.usgs.gov /edu/dictionary.html (5668 words)

	Wall Fountains, Table Top Fountains and Water Fountains
		Wall Fountains, Table Top Fountains and Water Fountains
		Many items ship same day if ordered before 2:00 PM EST.
		Subscribe to the Joy of Water Fountains Blog
	www.kineticfountains.com (54 words)

	Water Table Measurement and Monitoring for Flatwoods Citrus (Site not responding. Last check: )
		Water table depth differences between the middle and edge rows on 3 or 4-row beds typically differ by 4 to 6 inches throughout the year (Fig.
		The water table under flatwoods citrus may rise rapidly in response to either rainfall or irrigation because sandy soils are highly conductive to water flow (Fig.
		If the water table is close enough to the surface (as in the case of most flatwoods soils) this water may be available to the plant due to upflux, which generally lasts for several days as the water table gradually declines.
	edis.ifas.ufl.edu /CH151 (3338 words)

	Water Table to Drop Dramatically Near Beijing \| Worldwatch Institute
		The continued lowering of the water table is expected to exacerbate already serious ecological and environmental problems in the region, according to Xinhua News Agency.
		In addition to lowering water tables, the groundwater overdraft has led to ecological problems such as the drying-up of aquifers, land subsidence, and the formation of depression cones (areas where withdrawals have lowered the water table immediately beneath the well head).
		And by 1996, falling water tables had contributed to land subsidence of more than 700 millimeters over some 621 square kilometers—an area that is projected to grow to 28,836 square kilometers by 2030.
	www.worldwatch.org /node/4407 (542 words)

	What is groundwater?
		The water table may be deep or shallow; and may rise or fall depending on many factors.
		Heavy rains or melting snow may cause the water table to rise, or heavy pumping of groundwater supplies may cause the water table to fall.
		Source Water Protection is a process that enables citizens to protect local groundwater supplies which serve as a source for drinking water.
	www.groundwater.org /gi/whatisgw.html (556 words)

	Water table Summary
		The shape of the water table is controlled by a number of factors including the water-transmitting characteristics of the geologic medium, and the amount and location of groundwater recharge and discharge.
		In the vadose zone, above the water table, the interstices between particles of earth are filled by air, or by air and water (with the exception of the capillary fringe).
		The definition of the water table is the surface where the pressure head is equal to atmospheric pressure (where gauge pressure = 0).
	www.bookrags.com /Water_table (1311 words)

	Water table
		The water table is the upper limit of abundant groundwater.
		Above the water table the interstices between particles of earth are filled by air, or by air and water.
		The water table roughly follows the contour of the overlying land surface, and rises and falls with rainy or dry weather.
	www.xasa.com /wiki/en/wikipedia/w/wa/water_table.html (237 words)

	SBWATER.ORG: Saving You Water
		Water is usually found in its liquid state, but is also common in its gaseous state as vapor in the air, or as a solid (frozen).
		Water is the only substance found on the earth naturally in three forms: solid, liquid and gas.
		Water is used over and over by nature and is recycled in the water cycle.
	www.sbwater.org /WaterChemistry.htm (1795 words)

	Water level Fluctuation
		A comparison of water levels from 1962 to 1977, 1977 to 1983 and 1983 to 1995 brings out a clear picture of water level declines in major parts of the territory.The water levels and fluctuations during these periods are given in drawing.
		In 1995 the extent of area with water levels in the range of 10 to 20 m bgl has substantially increased and the deepest water level is about 35 m bgl at Gadaipur in Chattarpur basin of Mehrauli block.
		During 1977- 1983, water table declined by 4m or less in most parts of Delhi and rise being confined to small areas in northern Delhi and in the southern part of Chattarpur basin.
	www.rainwaterharvesting.org /index_files/water_level_fluct.htm (796 words)

	Officials: Water table shaken up by this week's earthquake - Boston.com
		Since the quake Monday night, the water level at one of the agency's monitoring wells in Acadia National Park dropped by 3 1/2 feet, hydrologist Gregory Stewart said.
		The water level was still dropping but was beginning to level off Wednesday morning, he said.
		What struck the scientists is the fact that there's little reference in scientific literature to drops in water levels after earthquakes, he said.
	www.boston.com /news/local/maine/articles/2006/10/04/officials_water_table_shaken_up_by_this_weeks_earthquake (335 words)

	Water Table Management
		Farm lands susceptible to seasonal or intermittent high water tables usually require subsurface drains, which serve to lower the water table to a level equal to the drain depth.
		Water is supplied through the subsurface drainage systems using control structures to regulate the water table level.
		Irrigation water is applied below the ground surface, thus raising the water table to the crop root zone.
	ohioline.osu.edu /~msea/WTM.html (896 words)

	Water Table (Site not responding. Last check: )
		The water table is the level at which the soil is saturated with water.
		When discussing high water table conditions, it is important to distinguish between ‘apparent’ and ‘perched’ water tables because drainage solutions for each may be quite different.
		An apparent water table is a thick zone of saturated pores in the soil and is relatively permanent and often expansive.
	www.cuyahogaswcd.org /water_table.htm (472 words)

	AGWT - What Is A Water Table? (Site not responding. Last check: )
		The upper surface of ground water is the water table.
		If however the water table is hundreds of feet down, it may take years for the infiltrating water to reach the saturated zone and there will be no seasonal change in water table levels.
		Water table levels in aquifers therefore represent the combined effects of rates of recharge and rates of discharge.
	www.agwt.org /natdlr5.htm (842 words)

	Water Table Management Guidelines
		The goal of proper water table management is to consistently maintain field ground water levels within an optimum range of depth beneath the ground surface, thereby minimizing plant stress by allowing crops to readily obtain water for growth, while at the same time preventing damage due to root zone flooding.
		Subirrigation water table depths are regulated using a weir-type hydraulic control structure placed between the drainage pipe network and its outlet (see section on water table management options).
		The weir, whose height governs the water table position, is comprised of a number of flashboards inserted within the control structure at its base, one on top of the other.
	www.ag.ohio-state.edu /~usdasdru/WRSIS/water_table_management_guideline.htm (812 words)

	Water Table - Swedish EPA (Site not responding. Last check: )
		The height of the water table is subject to large natural variations, but in some places it is also influenced by human activities.
		Raising the water table may result in higher levels of iron and manganese, increased risk of landslides, the saturation of previously dry land, and increased levels of organic matter in groundwater.
		At higher elevations, the water table is usually lower than indicated by the curves; near lakes and on valley floors, it is usually higher than indicated.
	www.internat.environ.se /documents/legal/assess/assedoc/gndwdoc/watertbl.htm (433 words)

	Effects of Agricultural Water Table Management on Drainage Water Quality
		Water table control is a rapidly growing management alternative being implemented by farmers in several states along the Atlantic coast.
		Water level recorders were installed at two sites to monitor field water table fluctuations in response to the different water table management strategies.
		During periods when the water table was less than 2 meters deep, nitrate concentrations at the 3 to 4 meter depth were typically less than 0.3 mg/L. Reduction in nitrate/chloride ratios, in time and with depth, suggested that nitrates were reduced by denitrification upon reaching the saturated zone.
	www.ncsu.edu /ncsu/wrri/reports/report237.html (1402 words)

	Approaches to Automated Water Table Mapping
		The water table is deeper (approximately 5 to 15 feet) beneath modern and relict sand dunes, and on sandy scarps and ridges.
		The height of the water table is determined for a particular grid cell by calculating its distance from the nearest surface water body, the total distance between surface water bodies at that point, and then applying the water profile equation through grid algebra or database calculations.
		The set of water table measuring locations must be fully representative of the spatial domain: an assumption is made as to which variable explains most of the water table variation and sample locations are randomly distributed within strata of this variable.
	www.ncgia.ucsb.edu /conf/SANTA_FE_CD-ROM/sf_papers/matson_kris/santa-fe.2.html (4670 words)

	Groundwater
		Most of the water we see each day is in ponds, rivers, oceans, streams, lakes, puddles, and other places on top of the ground.
		The height of water in the saturated zone is called the water table.
		When the water table is higher than the actual surface of the ground, there are streams, rivers, and lakes on the land.
	www.windows.ucar.edu /tour/link=/earth/Water/groundwater.html (341 words)

	Some effects of a water-table level on the growth of sugarcane (Site not responding. Last check: )
		Cane was grown for 3 years in deep containers in which the water table was maintained at constant depths of 25, 50, 75, 100 or 125 cm.
		The 50-cm water table gave intermediate results, and no differences in growth were observed between 75-, 100- and 125-cm water tables, which gave the best results.
		Soil salinization occurred about 20-30 cm above the water table in all treatments; it was not serious in the 100- and 125-cm water-table treatments, but somewhat high values for the electrical conductivity and sodium adsorption ratio of the soil saturation extract were observed in the other treatments.
	www.trophort.com /information/data/B03/S23/GOS72SOM8411111.html (221 words)

	Chapter 2, Page 3 - Utah's Water Resources: Planning for the Future (Utah Division of Water Resources)
		Table 2 lists the average annual ground water withdrawals in each of the areas, based on well data available for the years of 1989 to 1998.
		The combination of all the climatological data with the streamflow and ground water data presented to this point yields a snapshot of the water supply in Utah.
		Since mining ground water has the net effect of increasing the annual water supply, it is also added to the basin yield to obtain the actual water supply that is available for use in Utah.
	www.water.utah.gov /waterplan/uwrpff/Chp-02c.htm (799 words)

	Water Table - Search Results - MSN Encarta
		Water Table - Search Results - MSN Encarta
		Water Table, underground border between the ground in which all spaces are filled with water and the ground above in which the spaces contain some...
		Water Cycle : groundwater, aquifers and the water table
	encarta.msn.com /Water_Table.html (150 words)

	Universal Sand and Water Table Center (Site not responding. Last check: )
		The Universal Sand and Water Tables can become a continuous chain of rivers, waterfalls and lakes, or a construction site where workers use pulleys to hoist sand and building materials into place.
		Durable molded-plastic pan. The large sand and water table comes with a gutter to catch potential spills and return the water to the pan.
		Lift one end of the sand and water table and wheel it easily into another play area.
	www.communityplaythings.com /c/sandandwatertables/UniversalSandandWaterCenter/index.htm (331 words)

	Appendix C: Finding Underground Water
		When precipitation falls on land, some of the water runs off into the lakes and rivers, some is evaporated back into the atmosphere, some is adsorbed by plant roots and re-enters the atmosphere by a process known as transpiration (evapotranspiration), and some of the water infiltrates into the soil.
		The depth to the water table depends on the nature of the geological materials and the slope of the land surface.
		Water in confined aquifers is under pressure caused by the weight of the confining materials, the elevation differences in the aquifer, and the restriction in movement of water in the aquifer.
	www.lifewater.ca /Appendix_C.htm (1715 words)

	Water table - Ground water: Minnesota DNR
		Water beneath the land surface occurs in two principal zones: the unsaturated zone and the saturated zone.
		Below the water table, the water pressure is great enough to allow water to enter wells, thus permitting ground water to be withdrawn for use.
		In Minnesota, the water table is generally close to the land surface, typically within a few tens of feet in much of the state.
	www.dnr.state.mn.us /groundwater/watertable.html (128 words)

	Chapter 3 - Water table management
		Water table management systems may be designed to control drainage volumes, peak flow rates or chemical losses from agricultural fields or catchments.
		At the field level, the potential risks must be assessed by comparing the water table regime to: (i) fertilizer rates and practices during the growing season; (ii) the periods of high mineralization rate; and (iii) the periods of possible denitrification.
		Soil permeability is a key factor governing the rate of water movement from ditches to adjacent fields, and the upward movement of water from the water table to the plant roots.
	www.fao.org /docrep/W7224E/w7224e07.htm (3074 words)

	Table 1 \| "Mold Remediation in Schools and Commercial Buildings" \| Mold \| Indoor Air \| U.S. EPA
		Depending on the size of the area involved and resources available, professional assistance may be needed to dry an area quickly and thoroughly.
		Treated or finished wood surfaces may be cleaned with mild detergent and clean water and allowed to dry.
		If you know or suspect that the water source is contaminated with sewage, or chemical or biological pollutants, then Personal Protective Equipment and containment are required by OSHA.
	www.epa.gov /mold/table1.html (539 words)

	Water Table Drawdown and Well Pumping
		In areas where the water table is declining, the aquifer may become progressively less useful for various types of withdrawals as the water level decreases to and past the elevation at which high-rate drawdowns would be in excess of the available saturated thickness.
		The pattern of water table distortion is called the cone of depression, and the area over which the depression can be detected is called the zone of influence of the well.
		Even though water levels are measured annually in the winter when irrigation pumping has been at a minimum for some months, it is probable that full recovery of the water table never occurs, and some pumping does occur outside of the normal spring-summer growing season.
	www.kgs.ku.edu /HighPlains/atlas/apdrdwn.htm (996 words)

	Water Table Challenge
		At morning meeting, two teachers posed the question, "Do you think we can empty the water from the table through these hoses and into the buckets?" The students were fascinated with testing different ways of pouring water into the hoses and helping it travel through the length of the winding hose and into the bucket.
		Mariah was interested in the goal of filling the water table, however she became engrossed in the concept of filling and emptying the particular bottle she was using.
		She spent the duration of her time at the water table soaking up the water with her sponge and then watching it seep out as she squeezed it over the water table.
	www.umass.edu /preschool/laurenpanel/laurenpanel.htm (954 words)

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