green infrastructure for municipalities in new york’s lake ......new york – lake champlain basin...
TRANSCRIPT
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Green Infrastructure for Municipalities in New York’s Lake
Champlain BasinRural Roads
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Manual DownloadIf you haven’t already, download the manual:
http://www.lcbp.org/2017/05/green-infrastructure-webinar-series/
View Past Webinars on YouTube:https://www.youtube.com/user/nb05458Or just search Lake Champlain Basin Program YouTube…
Download the New York Rural Roads Active Management Plan Manual (RRAMP)https://www.warrenswcd.org/files/RRAMP_Manual.pdf
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads - OverviewIntroductionOverview of Issues Associated with Rural RoadsOpportunities and ChallengesAuxiliary BenefitsPractice SelectionCase StudiesFeatured Case Study – Rachel Beauregard, VT BBR
ProgramSummary
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads - IntroductionGravel is pervious – right?
Sadly, no. Gravel roads are too compacted.
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads - IntroductionGravel roads frequently cross many small streams
This leads to pollutant transport
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Poll Question!
Does your community have these types of roads – and do you have frequent erosion issues with them?Type your answer in the
Chat Box on the right-hand side of the screen.
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Stormwater IssuesCommon Issues Associated with Rural Roads Stormwater
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Organic Deposition (Phosphorus)Hydrocarbons / Heavy MetalsFrom Cars
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Stormwater IssuesCommon Issues Associated with Rural Roads Stormwater
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Road Surface Erosion
Road Shoulder Erosion
Ditch Erosion
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Stormwater IssuesCommon Issues Associated with Rural Roads Stormwater
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FlowIncreases
Pre-RoadDevelopment
Post-RoadDevelopment
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads –Opportunities and Challenges
OpportunitiesTypically more open space to work with
Practices can often be located ONLY within the road ROWPractices are simple to install
Stone armoring, check dams, road re-surfacing, re-grading ditches
ChallengesRoads are often remote – material transport can be hardRoads are often steepCan be constrained by steep slopes on both sides – hard to
install practices
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads –Auxiliary Benefits
BenefitsPractices that improve water
quality can improve road durability and resilience – less erosionLess erosion means infrastructure
protection – culverts will last longer
Less material will be needed for road reconstruction
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Practice Selection
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Decision Tree (pg. 4)1) Start by deciding if you can
reduce impervious cover (reduce road width or length) or preserve natural features on-site
2) Do you have a confined or unconfined area?
3) If it’s confined – you’ll be working on the surface or in the ditches.
4) If it’s not – you can install practices outside the road ROW like turnouts, plunge pools, or other infiltration or sedimentation practices.
This Will Guide Your Design Process.
UnpavedUnconfined AreaConfined Area
Managing a rural road
Rain Garden / Bioretention
Captures and filters road runoff; creates
wildlife habitat
Water Bars
Directs stormwater off of unpaved roads to stable
vegetated areas; prevents erosion
Stone-armored Turnouts
Directs stormwater off of roads to stable
stone-armored areas; prevents erosion
Culvert Outlet Plunge Pools
Regulates runoff velocity and reduces
erosion; improves wildlife habitat
Impervious Cover Reduction
Preservation of Natural Features
Road Surfacing
Correct crowning and stable surface materials prevent
erosion and improve driving
conditions
Check Dams
Slows, and filters stormwater; can be incorporated into
existing ditches and swales
Stone Armored Swales
Lowmaintenance; redirects, slows, and
filters stormwater
Operation and Maintenance (O&M) Requirements:Minimal: Moderate:
High:
O&M: O&M:
O&M:
O&M:
O&M:O&M:O&M:
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads– Practice SelectionOutlet Protection
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Benefits:1. Reduces water velocity2. Controls erosion / encourages
sedimentation
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Practice SelectionRoad Surfacing
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Benefits:1. Sheds runoff
better2. Reduces risk of
erosion3. Better material =
better durability (and maintenance of road shape)
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Practice SelectionStone Armoring
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Benefits:1. Hardens surfaces –
prevents erosion in ditches
2. Filters out sediment (entrapment)
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Practice SelectionStone Check Dams
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Benefits:1. Slows and filters in-ditch
runoff2. Prevents erosion
Swale Slope (%) Check Dam Spacing (ft)
1 2002 1004 506 308 25
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Practice SelectionWater Bars
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Benefits:1. Direct water off road surface2. Reduces surface erosion by
breaking up road in to smaller segments
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Case Studies
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East Burke, VT – Turnouts, stone armoring, road re-shaping
Mad River Valley, VT – Stone armoring, road re-shaping, impervious reduction
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Poll Question!Which of these practices would you be most likely to
implement and why?Road Outlet ProtectionRoad Surfacing (including material addition)Stone ArmoringStone Check DamsWater Bars
Type your answers in the Chat Box on the right-hand side of the screen.
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?
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Featured Case Study
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Vermont’s Better Backroads ManualNew York’s Rural Roads Active Management Plan Manual
(RRAMP) is based on this
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads – Questions for Rachel?
Type your questions in the Chat Box in the right-hand side of the screen.
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Rural Roads - SummaryManaging rural roads runoff is important in protection
smaller sensitive streams from sediment and other pollutantsPractices that are good for water quality can be
good for road durability
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New York – Lake Champlain Basin – Green Infrastructure for Municipalities
Webinar SeriesJune 29 – 12-1: Parking Lots and HardscapesJuly 13 – 12-1: Building Development
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