E.S. 9: Fresh water2).pdfWater Deposition Alluvial fan: river water from a mountain empties into a...
Transcript of E.S. 9: Fresh water2).pdfWater Deposition Alluvial fan: river water from a mountain empties into a...
E.S. 9: Fresh waterE.S. 9: Fresh water
SMS Earth ScienceSMS Earth Science
Fresh waterFresh water EarthEarth’’s freshwater supply is s freshwater supply is finitefinite.. Water isWater is continously continously being passed through being passed through
the the hydrologic cyclehydrologic cycle..
Major Regional WatershedsMajor Regional Watersheds
WatershedWatershed / / Drainage BasinDrainage Basin: area where: area whereall the water drains to the same place.all the water drains to the same place.
River DevelopmentRiver Development
Water DepositionWater Deposition
Alluvial fanAlluvial fan: river water from a mountain: river water from a mountainempties into a empties into a flood plainflood plain and deposits and depositssediment.sediment.
DeltaDelta: River water empties into an ocean: River water empties into an oceanand deposits sediment.and deposits sediment.
Barrier IslandsBarrier Islands: waves leave sand deposits: waves leave sand depositsthat form islands parallel to the shore.that form islands parallel to the shore.
Alluvial FanAlluvial Fan
FloodplainFloodplain
DeltaDelta
Barrier IslandBarrier Island
PermeablePermeable vs. Impermeable vs. Impermeable
Permeable: water can pass through.Permeable: water can pass through. Reason for water stored undergroundReason for water stored underground..
Impermeable: water cannot pass through.Impermeable: water cannot pass through.
Groundwater RegionsGroundwater Regions
Water Table and WellsWater Table and Wells
KarstKarst Topography Topography Karst Karst topography includes features liketopography includes features like
cavescaves and and sinkholessinkholes..
Karst Karst TopographyTopography
KarstKarst is common in the is common in the Valley and RidgeValley and Ridgeregion of VA.region of VA. Limestone bedrockLimestone bedrock
Karst Karst TopographyTopography
These form whenThese form whenlimestone limestone orordolomitedolomite is slowly is slowlydissolved away bydissolved away byacidicacidicgroundwater.groundwater.
KarstKarst Topography Topography
StalactitesStalactites (top) and (top) andstalagmitesstalagmites(ground) form from(ground) form fromcarbonate depositscarbonate depositsin drippingin drippingunderground water.underground water.
Sediment PollutionSediment Pollution ErosionErosion and and runoffrunoff of loose sediment from of loose sediment from
construction sites, cleared forests, etc.construction sites, cleared forests, etc. Sediment blocks light for aquatic plantsSediment blocks light for aquatic plants
and can cover eggs of animals in theand can cover eggs of animals in thewater.water.
Chemical PollutionChemical Pollution PesticidePesticide runoff from lawns and crop fields can runoff from lawns and crop fields can
be harmful to organismsbe harmful to organisms.. FertilizerFertilizer runoff from crop fields allows algae to runoff from crop fields allows algae to
bloom (rapid growth) in ponds/lakes andbloom (rapid growth) in ponds/lakes andcauses fish and other organisms to die.causes fish and other organisms to die.
Waste PollutionWaste Pollution Human waste, detergents, soaps, etcHuman waste, detergents, soaps, etc…… are taken are taken
to a treatment plant before being filtered backto a treatment plant before being filtered backinto water supplies.into water supplies.
EndEnd