louisiana geological survey ground water resources program
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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. - PowerPoint PPT PresentationTRANSCRIPT
Louisiana Geological SurveyGround Water Resources
ProgramPresentation to: Louisiana Ground Water Resources
Commission’s 2009 Workshop
By: Thomas Van Biersel and L. Riley Milner
Geological Characterization of the Carrizo-Wilcox, Red River Alluvial, Sparta, Cockfield, and Mississippi
River Alluvial Aquifer Systems
By: Mr. L. Riley Milner, P.G.
Source: Smoot, 1989
Northern Louisiana AquiferModeling Studies
By: Dr. Thomas Van Biersel
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)
USGS 2003
Sparta Model
WRIR03-4132.pdf
2003 USGS Sparta Model Grid
2 layers1x1 mi58,206 cells
USGS-AR Models
URS 2002 Model
2 layers53 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.
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
MRAAModels
USGS-MS1 layer1x1 mi grid
USGS-AR1 layer1x1 mi grid
Other Models• USGS 2001 (Williamson and Grubb) – Gulf Coast Plain• USGS ? (MERAS) – Mississippi Embayment Aquifer
System (AL, AR, IL, KY, LA, MS, MO and TN)
Red River Alluvial Aquifer (RRAA) Models
• USGS 1980 (Ludwig ) – Shreveport to Black River only
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
Northcentral Model
Sparta Aquifer: 7 layersCarrizo-Wilcox: 4 layersCockfield: 1 layerSurface aquifers (RRAA, MRAA, and
Upland Terrace): 2 layersCook Mountain: 1 layer
Sparta Aquifer
Northwest Model
RRAA: 3 layersUpland Terrace/alluvial:1 layerCockfield: 1 layerCook Mountain: 1 layerSparta: 7 layersCane River: 1 layerCarrizo-Wilcox: 4 layers(incl: Dolet Hills and Naborton)
Northwest Model
Hartono, 2005
Discharge to RRAA (?):~15,350,000 m3/yr
Pumpage:16,500,000 m3/yr
storage: 56,000,000,000 m3
Wilcox Estimated Water Balance
Recharge:290,000,000 to
723,000,000 m3/yr
Northeast Model
RRAA Estimated Water Balance
Northeast Model
Layerssurface clay: 1MRAA: 4
USEPA, 2001
MRAA Thickness (ft)Confining Clay Thickness (ft)
MRAA Coarse sandThickness (ft)
MRAA Fine-medium sandThickness (ft)
Thank you