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Transcript of Catfish Pond Construction Gary Burtle Animal & Dairy Science, UGA Tifton, GA.
![Page 1: Catfish Pond Construction Gary Burtle Animal & Dairy Science, UGA Tifton, GA.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649cd55503460f9499c9fa/html5/thumbnails/1.jpg)
Catfish Pond Construction
Gary Burtle
Animal & Dairy Science, UGA
Tifton, GA
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Catfish Ponds on Level Land
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Catfish Pond Dimensions
• Approximately 10 acres, 600 ft wide
• Average 4 ft deep
• Smooth bottom, 1% slope or less
• Levees at least 10 ft wide at top
• Levee slopes 3:1 or best 5:1
• Drain dimensions at least 12 inch diameter
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A Well Constructed Levee
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A Finished Levee
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Pond Soils Must Have Clay
• A minimum of 25% clay is required to slow the rate of seepage from ponds
• Construction requires that clay be compacted after each 12 inch layer
• Clay content over 60% should be mixed with soil of a lesser clay content
• Top soil layers must be disrupted with a trench and filled back with clay
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Rubber Tire Dirt Scrapers
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Catfish Pond Equipment
• Three phase power is essential
• Hook ups for three aerators each with 10 HP electric motors is common
• Bulk feed storage for at least 16 tons of catfish feed should be near the ponds
• Remote sensors, monitors and transmitters need power supplies
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Three Phase Electric Power
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Pond Construction Work Plan
• Survey
• Soils
• Water Supply
• General– Permits– Contracts and Estimates– Financing
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Survey the Grade
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Use Laser Leveling
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Pick an Experienced Contractor
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Identify the Soil Types
} Top Soil
} B & CHorizons
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Check the Soil Texture
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Pond Design Options
0.2% slope falls 1.2 ft over 600 ft
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Levee Pond LayoutLevee Pond Layout
General
Direction
Of
SlopeWell
Drains
10 A
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Volume of a Levee
Assume 16 ft Top Width.
Assume 5:1 Slope on both sides.
Assume 5 ft average Levee Height.
(16 x 5) + (5 x 5 x 5/2) + (5 x 5 x 5/2) = 205 sq ft
205 sq ft x 100 ft = 20,500 cu ft per 100 ft length
20,500 cu ft / 27 cu ft per cu yd = 759 cu yd/ 100 ft
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Multiple Pond Sizes for Hatchery
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Size Ponds According to Your Need
• Generally 10 Acres for loading 20,000 lb of catfish per harvest.
• Size ponds according to market FIRST.• Consider topographical and soils
characteristics of your property.• Avoid long and narrow ponds or odd
shaped ponds.• Use the slope of your land.
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Water Control Structures
Pond Drains
Water Supply Lines
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Drains on Outside of Levee
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Swivel Drains
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Drain Through Core
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Antiseep Collar
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Seal the Collar
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In Levee Drain Lines
Clean-outs every 400 ft
Concrete bearing masses at junctions
Junctions at 45 degrees
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Drain too High
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Weighted Drain
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Improperly Weighted Drain
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Water Supply Line
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Supported Supply Line
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Alfalfa Valve
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Supply too Close to Levee Toe
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Well and Power Unit
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Filling Ponds from Natural Water
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13 Million Gallons in a 10 A Pond
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Water Budget
(Evaporation + Seepage) – Rainfall =
Water that must be Pumped
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Water Budget
• 45 inches/year Average in Georgia
• Evaporation from ponds 0 to 1 inch per day– Accounts for about 36 inches per year
• Seepage varies according to compaction– 0.05 to 0.5 inch per hour– Accounts for about 12 to 120 inches per year
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Water Needed
• 48 to 60 inches to fill the pond
• If pond is full:
– 3 to 12 inches for well built ponds
– 48 to 120 inches for seeping ponds
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Estimating Water Flow
D
12 in.
Area of pipe = A
Q = “A” X “D”
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Flow Problem
Assume an 8” diameter pipe.
Assume “D” is 12 inches.
“A” = 3.14 x 6 2 = 113 sq inches
Q = 12 x 113 = 1,356 GPM
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How Long to Fill a Pond?
Assume a 10 acre pond.
Assume a 400 GPM well capacity.
Assume very short distance between well and pond.
10 A X 4 ft X 325,000 gal/A-ft / 400 GPM =
32,500 minutes or 541 hr or 22.5 days
Recommend 50 GPM per Acre of Pond
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Options to Fill Ponds
• Seek sites with adequate ground or surface water.
• Drill several wells and pump into linked water lines. (3 x 400 GPM = 1,200 GPM)
• Pump from adjacent ponds that are to be drained using a high volume-low head pump.
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This Could Be You!
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Bins Require Extra Land
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Don’t Forget Storage