cns scenarios approach€¦ · • urban stormwater management –reducing amount of impervious...
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CNS Scenarios Approach
All Hands/Community Partners Council MeetingSeptember 17-18, 2014
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CNS Overall Approach
• Technical team researchers identify, evaluate and model nutrient sources, BMPs, ecological responses and ecosystem services
• Scenarios representing various “tactical” and “strategic” interventions are selected
• Scenarios are “tested” in watersheds at various scales, in “shared discovery” with stakeholders, using decision support tools
2Center for Nutrient Solutions Sept 2014
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Phase 1 Study Locations
Allegheny Plateau
Piedmont
Coastal Plain
Ridge &Valley
Spring Creek Watershed Rock Springs, PA
Spring
Creek
Mahantango Creek Watershed Klingerstown, PA
Mahantango
Creek
Conewago Creek Watershed Elizabethtown, PA
Conewago
Creek
Manokin
RiverManokin River Watershed
Princess Anne, MD
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Phase 2 and 3 Study Locations
• Phase 2: Two “Scaled Up” Regions
– ex, Lancaster County (PA)
• Phase 3: Two New Small Watersheds
– (chosen watersheds will be less data rich)
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Solution Scenarios: Testing Tools for Evaluating Tactics/Strategies
• Develop scenarios (sets of tactics/strategies) to meet water quality goals
• Test scenarios using decision support tools in watersheds
• Results provide information to help watershed stakeholders make watershed management decisions
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Solution Scenarios: What are our water quality goals?
• Achieving the Chesapeake Bay TMDL
– Meeting nutrient load reduction goals
• Achieving local water quality goals
– Local TMDLs, if applicable
– Achieving designated aquatic life uses
– Achieving local quality of life goals (maintaining economic viability of agriculture and communities, fishing, other recreational uses, etc)
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Scenario Test Categories
• Goal 1: Meet Bay TMDL– Implement WIP– Implement cost-effective BMP portfolio (Shortle, et al 2014)– Suggested additional test?
• Goal 2: Achieve local watershed health– Implement cost-effective BMP portfolio– Implement multi-objective assessment (Consider economic,
quality of life issues)– Suggested additional test?
• Atmospheric deposition reductions applied across the board– For each scenario, one run with reductions, one without– Are there other cross-cutting strategies we want to test?
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General Categories of Tactics and Strategies• Conservation cropping systems
• Livestock feeding management
• Grazing and pasture management
• “Perennialization” of vegetation
• Farming/community infrastructure development
• Manure/nutrient management
• Managing nutrient imbalances
• Stream restoration/legacy sediment abatement
• Urban stormwater management
• Managing nutrient imbalances with multiple interventions
• Atmospheric deposition reductions
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Watershed Specific Tactics and Strategies:Manokin River
• Farming/community infrastructure development
– Improved drainage water management with BMPs
– Litter export through community infrastructure (e.g., Perdue or power plant)
• Managing nutrient imbalances and Conservation cropping systems
– Alternative crop production systems that allows for phytomining
• Livestock feeding management
– Minimizing ammonia through feed mgt, facility improvements (Note: data on local ammonia emissions from ag not available)
• “Perennialization” of vegetation
– Install pocket wetlands in drainage ditches
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Watershed Specific Tactics and Strategies:Mahantango Creek
• Manure management
– Spatial and seasonal targeting of manure applications
– Poultry litter import; farm export from hog & poultry operations
• “Perennialization” of vegetation
– Mix of natural vegetation & harvestable perennial as buffers(consider widths; instream nutrient processing of forest buffers)
– Consider riparian corridor fencing and associated costs
• Grazing and pasture mgt and Livestock feeding mgt
– Poultry litter import
– Precision feeding
• Conservation cropping systems
– No till; Corn silage/rye cover10Center for Nutrient Solutions Sept 2014
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Watershed Specific Tactics and Strategies:Spring Creek
• Urban stormwater management
– Reducing amount of impervious surface; infiltration BMPs
– Urban nutrient management of lawn/turf
• Grazing and pasture management
• “Perennialization” of vegetation
– Riparian buffers/setbacks in urban areas (COG ordinance)
– Riparian buffers and stream bank fencing in agricultural areas
• Wastewater treatment
– Consider replacing Living Filter with WWTP discharge limits and model impacts
• Stream restoration/legacy sediment abatement
– Cost effective combo stream restoration tactics, spatially targeted11Center for Nutrient Solutions Sept 2014
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Watershed Specific Tactics and Strategies:Conewago Creek (1st of 2)
• Grazing and pasture management and Livestock feeding mngmt.
– Rotational grazing; Precision feeding
• Farming/community infrastructure development
– Heavy animal use areas and barnyard improvements
• “Perennialization” of vegetation
– Forest riparian buffers in rural residential/country estate/fallow and marginal lands
– Mix of trees/shrubs/meadows and harvestable perennial crops on production land
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Watershed Specific Tactics and Strategies:Conewago Creek (2nd of 2)
• Conservation cropping systems
– No till ; Cover crops
• Manure management and Nutrient balancing (+/- nutrients)
– Spatial and seasonal targeting of manure applications; Manure export from imbalanced areas
• Stream restoration/legacy sediment abatement
– Cost effective combination of stream restoration tactics, spatially targeted
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Scenario Testing Approach
• Develop customized suite of tactics/strategies for each scenario for each watershed
• Use models and decision support tools to test, evaluate and communicate scenarios for each watershed
• Share results with stakeholders during watershed planning workshops
• Results = information to help make informed, strategic watershed management decisions and choose optimal solution scenarios
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The CNS “Shared Discovery” Approach:Evaluating Solution Scenarios
Nutrient InputsStrategies(Team 1)
BMPsTactics
(Team 4)
Nutrient Loads
(Teams 2, 4)
Landscape Changes(Team 3)
Costs(Team 6)
Ecosystem Services
(Teams 6)
Aquatic Ecosystem Conditions
(Team 3)
Stakeholders(Teams 5 & 7) Information to
guide watershed decision making:Nutrient loads
Nutrient balancesAquatic ecosystem
conditionsEcosystem services
valuationImplementation
costs
CNS Research Teams
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Questions and Feedback
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• Does approach meet your needs?
• Suggested improvements to our overall scenario approach?
For this afternoon and tomorrow:
• Other test categories?
• Watershed specific tactics/strategies: Do we have the ‘right’ ones? Should some be changed? Have we missed any?