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Louisiana Geological Survey Ground Water Resources Program

Louisiana Geological Survey Ground Water Resources Program. Presentation to: Louisiana Ground Water Resources Commission’s 2009 Workshop By: Thomas Van Biersel and L. Riley Milner.

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Louisiana Geological Survey Ground Water Resources Program

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  1. Louisiana Geological SurveyGround Water Resources Program Presentation to: Louisiana Ground Water Resources Commission’s 2009 Workshop By: Thomas Van Biersel and L. Riley Milner

  2. Geological Characterization of the Carrizo-Wilcox, Red River Alluvial, Sparta, Cockfield, and Mississippi River Alluvial Aquifer Systems By: Mr. L. Riley Milner, P.G.

  3. Source: Smoot, 1989

  4. Northern Louisiana AquiferModeling Studies By: Dr. Thomas Van Biersel

  5. Sparta Models • USGS-LA 1985 (Trudeau and Buono) – Ouachita Parish only • USGS-AR 1990 (Fitzpatrick, Kilpatrick and McWreath) • USGS-AR/LTU 1991 (McWreath, Nelson and Fitzpatrick) • ULM 2001 (Gregory) • URS 2002 • USGS-AR 2003 (McKee and Clark)

  6. USGS 2003 Sparta Model WRIR03-4132.pdf

  7. 2003 USGS Sparta Model Grid 2 layers 1x1 mi 58,206 cells

  8. USGS-AR Models

  9. URS 2002 Model 2 layers 53 rows and 49 columns (190-mile by 218-mile area) 5194 grid cells (active model cells = 3687 of 5194) Cell dimensions = 1 mile by 1 mile to 10 miles by 14 miles.

  10. Mississippi River Alluvial Aquifer (MRAA) Models • USGS-MS 1990 (Sumner and Wasson) – MS only • USGS-AR 1993 (Mahon and Poynter) – AR only • USGS 1996 (Ackerman) – AR, LA, MO and MS • USGS-MS 2001 (Arthur) – MS only • USGS-AR 2003 (Reed) – AR only • USGS-AR 2009 (Gillip and Czarnecki) – AR only

  11. MRAAModels USGS-AR 1 layer 1x1 mi grid USGS-MS 1 layer 1x1 mi grid

  12. Red River Alluvial Aquifer (RRAA) Models Other Models • USGS 1980 (Ludwig ) – Shreveport to Black River only • USGS 2001 (Williamson and Grubb) – Gulf Coast Plain • USGS ? (MERAS) – Mississippi Embayment Aquifer System (AL, AR, IL, KY, LA, MS, MO and TN)

  13. Future Models • Northcentral LA – Sparta, Cook, Cockfield and Upland aquifers • Northeast LA – MRAA • Northwest Louisiana – Carrizo-Wilcox (incl. Narborton and Dolet Hills), Red River Alluvial, Sparta

  14. Northcentral Model Sparta Aquifer: 7 layers Carrizo-Wilcox: 4 layers Cockfield: 1 layer Surface aquifers (RRAA, MRAA, and Upland Terrace): 2 layers Cook Mountain: 1 layer

  15. Sparta Aquifer

  16. Northwest Model RRAA: 3 layers Upland Terrace/alluvial:1 layer Cockfield: 1 layer Cook Mountain: 1 layer Sparta: 7 layers Cane River: 1 layer Carrizo-Wilcox: 4 layers (incl: Dolet Hills and Naborton)

  17. Northwest Model Recharge: 290,000,000 to 723,000,000 m3/yr Discharge to RRAA (?): ~15,350,000 m3/yr Pumpage: 16,500,000 m3/yr Hartono, 2005 storage: 56,000,000,000 m3 Wilcox Estimated Water Balance

  18. Northeast Model RRAA Estimated Water Balance

  19. Northeast Model Layers surface clay: 1 MRAA: 4

  20. USEPA, 2001

  21. Confining Clay Thickness (ft) MRAA Thickness (ft)

  22. MRAA Fine-medium sand Thickness (ft) MRAA Coarse sand Thickness (ft)

  23. Thank you

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