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FLOOD RISK and RESILIENCE:
PIERMONT
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THE HUDSON RIVERA COASTAL, TIDAL
RIVER
!The Hudson River is anarm of the Atlantic Ocean
!The river tidal to thefederal dam in Troy
!All of the Hudsonsshorelines are subject tocoastal hazards
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COASTAL HAZARDS
!TIDES & WAVES
!
STORM SURGES
!EROSION
!FRESHWATERTRIBUTARY FLOODING
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COASTAL HAZARD:Coastal Inundation
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2012: HURRICANE SANDY
!7+ ft Storm Surge
!
140+ structures impacted
!$20M+ in damages
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COASTAL HAZARD:Coastal Inundation
11.5 ft. Storm Tide
2 ft. Normal High Tide9.5 ft. Storm Surge
Mean Sea Level
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COASTAL HAZARD:Freshwater Tributary Flooding
8/10/2019 Flood Risk and Resilience: Piermont
8/19FLOOD RISK MAPPING
1% Zone
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9/19FLOOD RISK MAPPING
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! #$%$&' #$()#
! !"#$%& ()*+, )$ %*+, -./0)10+, 203& 3 4+&2",5 31%
!
.-$2 6+&2",5 78( )$ 9"409%,+ ,3:)# 3 $++9$ 2%;+ 344+?
/000 . /0**1 -23-44567
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SEA-LEVEL RISE & STORM SURGE
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SEA-LEVEL RISE & STORM SURGE
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CLIMATE CHANGE
SEA LEVEL RISE PROJECTIONS FOR HUDSONRIVER
Low Estimate(10thpercentile)
Middle Range(25-75thpercentile)
High Estimate(90thpercentile)
2020s 2 4-8 10
2050s 8 11-21 30
2080s 13 18-39 58
2100s 15 22-50 75
B $= $=CD?E AE F@E?;
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SEA-LEVEL RISE & STORM SURGE
2
source: Climate Central
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FUTURE FLOOD RISKS
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FUTURE FLOOD RISKS
People at Risk Land at risk (acres)Households at Risk
HOUSEHOLDS PEOPLE LAND acres
at risk from floodingat risk from daily tidal inundation Amount of Sea Level Rise
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FUTURE FLOOD RISKS
COAST Model for Piermont
Modeled Water Levels and Vulnerability Assessment ResultsFor the 100 Year Storm with Sea Level Rise in the Years
2025, 2055 and 2100
Expected Damag Values to Buildings
(in $ Millions)
nd Improvements
Year Projected sea levelrise
Number of TaxParcels Affected
From a Single StormIn This Year
PermanentlyInundated by SLR
Cumulative from
SLR and All Storms
Up To This Year
2025 10" 24 26.7 2.6 18.9
2055 29" 87 35.7 17.9 70.8
2100 72" 178 56.7 60.4 192.2
-
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Village of Piermont
Town of Orangetown
Town of Orangetown
Village of Tarrytown
Village of Grandview-on-Hudson
Village of Irvington
50 2,9001,450
Feet
!
!
!
Albany
New York
Poughkeepsie
Summary of Village of Piermont
How Will It Impact Your Community?
Hudson River Sea Level RiseVi l lage of Piermont
Inundation Modelinghe Hudson Is Rising
ea Level Rise Time Frame
Hudson River Sea Level Rise Projections (in.)
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