Transcript BMPs and the Chesapeake Bay Watershed Model

Review of Scenario
Builder BMP
crediting
Christopher F. Brosch
University of Maryland Extension
Chesapeake Bay Program Office
[email protected]
410-267-5707
Suite of Bay Modeling Tools
Land Use
Change Model
Watershed
Model
Criteria
Assessment
Procedures
Bay
Model
100
90
CFD Curve
80
Percent of Time
Scenario
Builder
70
Area of Criteria
Exceedence
60
50
Area of Allowable
Criteria
Exceedence
40
30
20
Airshed
Model
10
0
0
10 20 30 40 50 60 70 80 90 100
Percent of Space
Effects
Allocations
Scenario
Builder Scenario
Builder
A tool that simulates nonpoint source processes in
order to enhance the
accuracy and precision of
the Phase 5 Chesapeake
Bay Watershed Model
3
LCM info combined into Scenario Builder
Each segment consists of separately-modeled land
uses:
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Pervious Urban
Impervious Urban
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Construction
Extractive
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Regulated and nonregulated versions of
the above
Combined Sewer
System versions of the
above
Forest/Wooded/Open
Harvested Forest
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Row crops (high till)
Row crops (low till)
Vegetable Crops
Pasture
Fertilized Hay
Alfalfa
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Nutrient management
versions of the above
Nursery
Degraded Riparian
Pasture
AFO/CAFO
Unfertilized Hay
4
Non-Point Source Practices
Nutrient Application Reductions
Atmosphere
Fertilizer
Scenario
Builder
Manure
Runoff
River
Non-Point Source Practices
with Nutrient and Sediment Reduction Efficiencies
Atmosphere
Fertilizer
Scenario
Builder
Manure
Load reductions attributed
“efficiencies”
• Efficiencies can vary by region
Runoff
River
Non-Point Source Practices
utilizing Landuse Changes
Runoff
River
Scenario
Builder
Chesapeake Bay Watershed Model
Agricultural Practices
Nutrient Management
• Nutrient Management
• Precision Agriculture
• Enhanced Nutrient Management
Conservation Tillage
• Continuous No-Till
• Other Conservation Tillage
Cover Crops
• Cover Crops and Small Grain Enhancement
o
o
o
Early, standard, late-planting
Species
Seeding method
Pasture Grazing Practices
• Alternative Watering Facilities
• Stream Access Control with Fencing
• Prescribed Grazing
• Precision Intensive Rotational Grazing
Other Agricultural Practices
• Forest Buffers
• Wetland Restoration
• Land Retirement
• Grass Buffers
• Tree Planting
• Carbon Sequestration/Alternative Crops
• Conservation Plans/SCWQP
• Animal Waste Management Systems
• Mortality Composters
• Water Control Structures
• Horse Pasture Management
• Non-Urban Stream Restoration
• Poultry Phytase
• Poultry Liter Management
• Dairy Precision Feed
and/or Forage Management
• Swine Phytase
• Ammonia Emissions Reduction
Interim BMPs
descriptions available in Scenario Builder Documentation
(http://archive.chesapeakebay.net/pubs/SB_V22_Final_12_31_2010.pdf)
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Cropland Irrigation Management
Cropland Drainage Phosphorus-sorbing Materials
(PSMs)
Liquid Manure Injection
Poultry Manure Injection
Mortality Incineration
Vegetative Environmental Buffers (VEB)
Manure Processing Technology
Passive Hay Production
Container Nursery and Greenhouse Runoff and
Leachate Collection and Reuse
Volume Reduction and/or Retention Standard