G202 PSU 10/24/06 GroundwaterGuest Lecturer: Eriks Puris

• http://www.artemisscience.com/media/G202_Lecture_PSU10wk.swf

Fate of Rain

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Water Table

porosity vs. permeability

Porosity

What Controls Depth to Water Table?

humid vs. arid environment

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Topography of the Water Table

Why is the water table not a horizontal surface?

Flow: Recharge vs. Discharge

Regional Groundwater Flow

Groundwater

• Water Table

• Flow of Groundwater

• Aquifers

Types of Aquifers

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Which Well Will Have Artesian Flow?Why will the other wells not have

Artesian Flow?

Ground Water as a Resource

Fig. 19.0

• Quantity

• Quality

Depth to Groundwater

Source: http://capp.water.usgs.gov/gwa/ch_h/H-text1.html

Depth to Water Table

• Balance

– withdrawal vs. recharge

–(flux in vs. flux out)

Is groundwater renewable?

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Is Groundwater Renewable?

How does urbanization affect recharge?

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Is Groundwater Renewable?

Contamination

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Columbia Plateau Regional Aquifer

Cross Section

Source: http://capp.water.usgs.gov/gwa/ch_h/index.html

Columbia Plateau Regional Aquifer

Source: http://rst.gsfc.nasa.gov/Sect6/Sect6_8.html

Source: http://gj.em.doe.gov/hanf/TXREPORT/REPORT/content.htm

Sources of Hanford Contamination

Source: http://www.ecy.wa.gov/pubs/0205015.pdf

Hanford Contamination

Source: http://www.ecy.wa.gov/programs/nwp/kpg/kdcleanup.htm

Groundwater Plume

http://www.hanfordwatch.org/archive/groundwater_computer_model.htm

Individual Drinking 2 L/d Groundwater - All RadsYear 1980 Mean Annual Dose Rate in Millirem

100,000

110,000

120,000

130,000

140,000

150,000

160,000

550,000 560,000 570,000 580,000 590,000 600,000

Above 400 40 to 400 4 to 40 0.4 to 4 0.04 to 0.4 Small

animation

Hydrothermal Power

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Caves and Karst

Oregon Caves

Soda Straws Oregon Caves

Photo: E. Puris

Stalactite Stalagmite

ColumnOregon Caves

Photo: E. Puris

“bananas” Oregon Caves

Photo: E. Puris

Fig. 19.28

Prof.Condon’s 1908 Signature

Photo: E. Puris

Marble Oregon Caves

Formation of CavesFig.19.30a

Formation of CavesFig. 19.30b

Formation of CavesFig. 19.30 c

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Sinkhole in Puerto Rico (Fig. 19.29)

pp. 602-603

pp.618-619

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For Wednesday 2/15

• Reading-Chapter 19