sediment and particulate control - uf erec€¦ · particulate p and sediment control : minimize...
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In Collaboration With
Pepe Lopez, Luis Girado & Orlando Diaz Everglades Research and Education Center
Sediment and Particulate Control
April 14, 2016
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BMP PTS DESCRIPTION
NUTRIENT CONTROL : MINIMIZE MOVEMENT OF NUTRIENTS OFF-SITE
Nutrient Application Control 2½ Controlled application of nutrients; banding, controlled application
Nutrient Spill Prevention 2½ Formal spill protocols: storage, handling, transfer, and education/instruction
Rotational Vegetable Planting 2½ Rotation planting of high P/low P demand crops to avoid P build up
Plant Tissue Analysis 2½ Determines plant nutrient requirements via tissue testing
Soil Test Based Fertilization 5 Determine soil P requirements and follow standard recommendations
Split Nutrient Application 5 Applying split P without exceeding total recommendation
Slow Release P Fertilizer 5 Specially treated fertilizer
Reduced P Fertilization 5 P application rate is at least 30% below recommendation
WATER MANAGEMENT : MINIMIZE THE VOLUME OF OFF-SITE DRAINAGE DISCHARGE
½ Inch Detained 5 Delay discharge: based on measuring daily rain events using a rain gauge
1 Inch Detained 10 Delay discharge: based on measuring daily rain events using a rain gauge
Improved Infrastructure 5 Re-circulate water; fallow field flood; increase water detention
Water Table Management 5 Optimizing drainage and irrigation schedules to decrease discharge
PARTICULATE P AND SEDIMENT CONTROL : MINIMIZE MOVEMENT OF PARTICULATE MATTER AND CANAL SEDIMENTS
Any 2
Any 4
Any 6
Any 8
2½
5
10
15
• Leveling fields • Slow drainage velocity near pumps
• Grassed swales/field ditch connections
• Ditch bank berms • Canal cleaning program
• Aquatic weed control • Field ditch drainage sumps
• Barriers at discharge locations • Ditch bank stabilization
• Sediment sump/trap in canals
• Soil stabilization through infrastructure improvements
• Cover crops • Culvert bottoms above ditch bottoms
• Vegetated ditch banks
Other BMPs TBD BMPs proposed by permittee and accepted by SFWMD
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Water
Sediment
100% Phosphorus
40 %
60 %
Soluble
Particulate:
Fertilizers
Soils & Vegetation
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Leveling Fields Cover Crops
Grassed Swales Raised Culverts
Ditch Bank Berms Grassed Ditch Banks
Aquatic Weed Control Controlled Drainage
Floating Barriers or
Trash RacksCanal Cleaning
Pump Sediment Sump Field Ditch Sumps
Soil Stabilization thru
Structure improvementOther controls
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BENEFITS:
Reduces sheet and rill erosion
Improves water management
Uniform field drainage reduces P loads
Better cover crop and crop yields
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Field Ditch Sump
Controlled Drainage
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Main Canal Bank Berm
SlopeRoad Road
Crop Crop
Slope
Vegetated
Canal Banks
Caprock
BMain Canal Bank Berm
SlopeRoad Road
Crop Crop
Slope
Vegetated
Canal Banks
Caprock
B
Field Ditch Bank Berm
Vegetated
Ditch Banks
Caprock
Crop Crop
Soil
A
Soil Berm Soil Berm
Field Ditch Bank Berm
Vegetated
Ditch Banks
Caprock
Crop Crop
Soil
A
Soil Berm Soil Berm
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Place vegetation away from banks when possible
Not Here
Here
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Floating Barriers or Weed Booms
Floating aquatic plants are significant source of particulate P
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Cross Section
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Minimizes soil erosion.
Stops soil subsidence.
Serves as drainage water storage pond.
Provides refuge to wading birds such as Wood Stork.
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BENEFITS
-Minimizes sediment erosion of the canal banks
MAINTENANCE
-Requires regular mowing, as dense growth provides refuge for rodents
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Place excavated materials away from top of banks when possible.
Most beneficial when conducted during irrigation periods.
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RoadRiser
Field Ditch Sump
Dra
inage
Can
al
Culvert Caprock
Sediment
Accumulation
RoadRiser
Field Ditch Sump
Dra
inage
Can
al
Culvert Caprock
Sediment
Accumulation
BENEFITS
Trap heavier sediments that have been deposited in field ditches during field preparation by wind erosion and by surface runoff.
MAINTENANCE
Require frequent cleaning usually every other year.
Place Spoil Here
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Wider & Deeper
Duck Weeds
Wider and Deeper
In Front of Culvert
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Flooded Fallow Fields
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THANK YOU FOR BEING AN IMPORTANT PART OF THIS
BMP PROGRAM
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Remember : SOMEONE IS WATCHING !!
ANY QUESTIONS ???