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Cortney L. Ohs, Ph.D.

Aquaculture Ponds. Cortney L. Ohs, Ph.D. Topics. Site Considerations Water Soil Topography Types of ponds Cost Construction of ponds Levee ponds Watershed ponds Lined ponds. Water. Availability 25 gallons per minute per acre Source Wells Springs Streams. Pesticides

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Cortney L. Ohs, Ph.D.

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  1. Aquaculture Ponds Cortney L. Ohs, Ph.D.

  2. Topics • Site Considerations • Water • Soil • Topography • Types of ponds • Cost • Construction of ponds • Levee ponds • Watershed ponds • Lined ponds

  3. Water • Availability • 25 gallons per minute per acre • Source • Wells • Springs • Streams • Pesticides • TEST Water!! • Alkalinity • 80 ppm minimum

  4. Soil • Clay Content • Take samples at various locations. • Water Table • Wet soils aren't best! • Pesticides • TEST Soil!!

  5. Topography • Slope • 2-10% best • Flooding • Do not build on floodplain!

  6. Levee Pond Construction • Freeboard and Depth • 1-2 feet freeboard • 3 feet in shallow and • 6 feet in drain end • Slope of Levees • 3: 1 minimum • 4: 1 maximum

  7. Levee Pond Construction • Size • Larger ponds are cheaper per acre • 1-10 acres for new farmers • Shape • 10 acre square • requires 2,569 linear feet • 10 acre rectangular • requires 2,729 linear feet • Levee width • 20 ft for main • 16 ft for others

  8. Levee Pictures Photos by Cortney Ohs

  9. Levee Pond Construction Photos by Cortney Ohs

  10. Newly Constructed Pond Photo by Cortney Ohs

  11. Levee Ponds - Catfish Photos by Auburn University Department of Fisheries and Allied Aquaculture

  12. Levee Ponds - Shrimp Photos by Auburn University Department of Fisheries and Allied Aquaculture

  13. Small Research Pond Photo by Cortney Ohs

  14. Graveled vs. Not Graveled Levees Photos by Auburn University Department of Fisheries and Allied Aquaculture

  15. Orientation • Right angle to prevailing winds reduces levee erosion • Parallel increases wind action action and aeration • Site Preparation and Construction • Remove vegetation and topsoil. • Compaction is critical

  16. Pond Drains • Typically 6 inch pipe is sufficient for ponds less than 10 acres • If ponds must be drained to harvest (shrimp) then use one 10 inch per acre of water • PVC pipe • Use anti-seep sleeve around pipe deep in levee

  17. Pond Stand Pipes External Internal with swivel joint Photos by Auburn University Department of Fisheries and Allied Aquaculture

  18. Water Inlets • Water source pipes should have control valves on them • May be designed to flow into adjacent ponds Photo by Cortney Ohs

  19. Electricity • Electrical source for each pond

  20. Lined Ponds Photo by Cortney Ohs

  21. Watershed Ponds • Watershed is containment free • Depth is a function of topography • Requires 5-7 acres of watershed per acre of water • Must have emergency spillway

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