review of scenario builder bmp crediting christopher f. brosch university of maryland extension...
TRANSCRIPT
Review of Scenario Builder BMP
crediting
Christopher F. BroschUniversity of Maryland ExtensionChesapeake Bay Program Office
0
10
20
30
40
50
60
70
80
90
100
0 10 20 30 40 50 60 70 80 90 100
Percent of Space
Per
cent
of T
ime
CFD Curve
Area of Criteria Exceedence
Area of AllowableCriteria
Exceedence
0
10
20
30
40
50
60
70
80
90
100
0 10 20 30 40 50 60 70 80 90 100
Percent of Space
Per
cent
of T
ime
CFD Curve
Area of Criteria Exceedence
Area of AllowableCriteria
Exceedence
Watershed Model
Bay Model
CriteriaAssessmentProcedures
Effects
Allocations
AirshedMode
l
Land UseChange Model
ScenarioBuilder
Suite of Bay Modeling Tools
3
Scenario Builder
A tool that simulates non-point source processes in order to enhance the accuracy and precision of the Phase 5 Chesapeake Bay Watershed Model
ScenarioBuilder
4
Each segment consists of separately-modeled land uses: Pervious Urban Impervious Urban
Regulated and non-regulated versions of the above
Construction Extractive
Combined Sewer System versions of the above
Forest/Wooded/Open Harvested Forest
Row crops (high till) Row crops (low till) Vegetable Crops Pasture Fertilized Hay Alfalfa
Nutrient management versions of the above
Nursery Degraded Riparian
Pasture AFO/CAFO Unfertilized Hay
LCM info combined into Scenario Builder
Non-Point Source Practices Nutrient Application Reductions
ScenarioBuilder
Atmosphere FertilizerManure
RunoffRiver
Non-Point Source Practices with Nutrient and Sediment Reduction Efficiencies
Atmosphere FertilizerManure
Runoff
Load reductions attributed “efficiencies”
• Efficiencies can vary by region
River
ScenarioBuilder
Non-Point Source Practices utilizing Landuse Changes
Runoff
River
ScenarioBuilder
Chesapeake Bay Watershed ModelAgricultural Practices
Nutrient Management• Nutrient Management• Precision Agriculture• Enhanced Nutrient ManagementConservation Tillage• Continuous No-Till• Other Conservation TillageCover Crops• Cover Crops and Small Grain
Enhancemento Early, standard, late-plantingo Specieso 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 BMPsdescriptions available in Scenario Builder Documentation (http://archive.chesapeakebay.net/pubs/SB_V22_Final_12_31_2010.pdf)
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