1. 1 GROUNDWATER HYDROLOGY AND CONTAMINANT TRANSPORT CEVE 518 P.C. de Blanc C.J. Newell Test 1 Review

2. 2 Administrative  Test 1 Next lecture (Thursday, October 6). Covers material through steady-state flow (Theim equation). Can bring in one 8.5 x 11 sheet of notes and page issued by instructor at exam. Review lecture hand-out will be made available for cutting/pasting.  Homework No. 4  Will be issued Thursday, October 6.  Well be due Tuesday, October 18.  Transient flow problems, pump test analysis.  Papers for critical review available Thursday, October 13.  Reviews due last day of class.  Guidance on reviews will be issued next week.  Field Exercise and Project No. 1  Thursday, October 13.

3. 3 Basin Hydrologic Cycle Charbeneau, 2000.

4. 4 Basin Hydrologic Cycle – Quantitative Representation I Basin Aquifer Surface/ Soil Domenico and Schwartz, 1990.

5. 5 Charbeneau, 2000.

6. 6 Example Layered Aquifer System Bedient et al., 1999.

7. 7

8. 8 REV – Scale Effect Freeze and Cherry, 1979.

9. 9 Moisture Content in Capillary Zone Charbeneau, 2000.

10. 10 Pressure and Elevation Heads - Laboratory Freeze and Cherry, 1979.  = pressure head z = elevation head h = total head

11. 11 Freeze and Cherry, 1979.  = pressure head z = elevation head h = total head Pressure and Elevation Heads - Field

12. 12 Capillary Rise in a Tube Domenico and Schwartz, 1992.

13. 13 Soil Water Characteristic Curve is a Function of pore size Charbeneau, 2000. 0 n clay n sand  r,lay  r,and Capillary forces hold water tightly in small clay pores. Larger sand pores produce lower capillary pressures.

14. 14 Fetter, 1999. Relatively wide range of pore sizes from small to large results in widely varying capillary pressures. Narrow range of particle sizes results in relatively small range of capillary pressures. Soil Water Characteristic Curve is a Function of Sorting (Pore Size Distribution)

15. 15 Who Was Darcy? Henry Philibert Gaspard Darcy was born June 10, 1803 in Dijon, France. Admitted to the French School of Bridges and Roads in Paris, part of the Corps of Bridges and Roads. After graduation, he was eventually assigned by the Corps to a position in Dijon. In 1828, Darcy designed a 12.7 km system of aqueducts to supply the city of Dijon with surface water. The system included 28,000 m of pressurized surface lines and required no pumps or filters. Made important contributions to flow and friction loss in pipes, created an improved pitot tube design, and was the first to postulate the existance of a boundary layer in fluid flow. In 1856, carried out experiments while researching sand filters that lead to Darcy ’ s Law. Died unexpectedly January 3, 1858 from pneumonia during a trip to Paris.

16. 16 Dupuit Flow in Unconfined Aquifers UxUx

17. 17 Unconfined Aquifer with Recharge x divide

18. 18 Radial Flow to a Well

19. 19 Radial Flow to a Well S = Drawdown U r = Radial flow per unit width S = Drawdown U r = Radial flow per unit width ( “ cone of depression ” ) swsw s Todd, 1980.

20. 20 Principle of Superposition – Multiple Wells

21. 21 Example – Use of Theim Equation to Calculate T Todd, 1980. P1 P2