Infrastructure Network Eric Walberg, Climate Services Director Jen - - PowerPoint PPT Presentation

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Infrastructure Network Eric Walberg, Climate Services Director Jen - - PowerPoint PPT Presentation

Oct 08, 2022 139 likes •658 views

Taunton Green Infrastructure Network Eric Walberg, Climate Services Director Jen Hushaw, Applied Forest Scientist 1 Manomet Applying Science and Engaging People to Sustain our World Programs: Shorebird Recovery Landbird Conservation

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Eric Walberg, Climate Services Director

Taunton Green Infrastructure Network

Jen Hushaw, Applied Forest Scientist

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Manomet

Programs:

  • Shorebird Recovery
  • Landbird Conservation
  • Sustainable Economies
  • Climate Services

Applying Science and Engaging People to Sustain our World

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  • 1. Green Infrastructure Overview
  • 2. Climate Change Impacts
  • 3. Taunton Green Infrastructure Network
  • 4. Local Application of the Regional Network

Agenda

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What is Green Infrastructure?

Green Infrastructure: A network of waterways, wetlands, woodlands, wildlife habitats, and other natural areas that support native species, maintain natural ecological processes, sustain air and water resources and contribute to health and quality of life.

(McDonald, Benedict and O’Conner, 2005).

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Source: Google Earth

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Source: http://www.boston.com/news/local/articles/2011/05/29/scituate_sea_wall_repairs_to _be_done_in_several_cycles/ Source: http://www.boston.com/news/local/massachusetts/articles/2011/01/06/state_south_shore_officials_gauge _whether_area_qualifies_for_federal_disaster_aid/

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Types of Green Infrastructure Features

  • Undeveloped coastal reaches:
  • Intact dune system
  • Unimpeded sediment transport
  • Healthy tidal and non-tidal wetlands
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Types of Green Infrastructure Features

  • Undeveloped riparian corridors
  • Mix of wetland and upland features
  • Wetlands complexes
  • Forested upland
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Types of Green Infrastructure Features

  • Reconstructed features:
  • Constructed wetlands and dunes
  • Sediment replenishment (beach

nourishment)

  • Restoration of riparian corridors
  • Reforestation
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Types of Green Infrastructure Features

  • Hybrid features:
  • Living shorelines
  • Constructed reefs, breakwaters and

islands

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Source: Virginia Institute of Marine Science: http://ccrm.vims.edu/livingshorelines/

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Climate Impacts in the Taunton Watershed

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Observed Change: Temperature

Animation of Global Surface Temperature Anomalies from 1880-2015. Source: NASA/GSFC Scientific Visualization Studio

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Annual total precipitation changes for 1991-2012 (compared to 1901-1960 average)

Observed Change: Precipitation

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NCA 2014

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Projected Change: Precipitation

Adapted from NCA 2013, Fig. 2.14

% Change in Seasonal Precipitation by end-of-century (compared to 1970-1999) under Higher Emissions Scenario

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NCA 2014

Observed Change in Very Heavy Precipitation (1958-2012)

Percent changes in the amount of precipitation falling in very heavy events (the heaviest 1%) for each region.

Changing Extremes: Precipitation

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Boston Sea Level Rise Projections

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Ramifications

  • Increased freshwater flood threat
  • Particularly in sub-watersheds with

significant impervious surface cover

  • During periods of saturated soils
  • Increasing nonpoint source water

pollution

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Ramifications

  • Increased likelihood of groundwater and

surface water deficits during dry periods

  • Longer growing season
  • Increased evaporation and

evapotranspiration rates

  • Increasingly impactful drought
  • Biasing of precipitation towards heavy

downpours potentially reduces groundwater recharge

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Ramifications

  • Ecological stress and potential for

biodiversity loss

  • Increased inundation in tidal areas
  • Increased storm surge threat

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Source: Taunton River Climate Change Adaptation Plan, Manomet, 2013

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Source: Taunton River Climate Change Adaptation Plan, Manomet, 2013

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Green Infrastructure Solutions

  • Strategic protection and restoration of

natural features to:

  • Limit peak runoff rates and volumes
  • Maximize natural resiliency of coastal areas
  • Limit new development in flood prone areas
  • Maximize local groundwater recharge
  • Maintain ecological viability
  • High quality of life for citizens

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Taunton Watershed Green Infrastructure Network

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Legend

Taunton Watershed Boundary Streams Lakes Town Boundaries

Major Routes, by Administrative Type

Interstate U.S. Highway State Route

Context

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Legend

Taunton Watershed Boundary Streams Town Boundaries

Land Use/Land Cover

Open (Ag; Bare; Non-forest vegetation) Commercial/Industrial/High Dens Res Low Density Residential Forest (incl. Forested Wetland) Wetland Water Cranberry Bog

Major Routes, by Administrative Type

Interstate U.S. Highway State Route

Context

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Resilient Landscapes

Complex topography + Connected natural cover + High quality biodiversity features

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Resilient Landscapes Areas of Above Average Resilience

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Resilient Landscapes Areas of Above Average Resilience that are Undeveloped & Unprotected

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Areas of Above Average Resilience

Green Infrastructure Network Components…

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BioMap2: Core & Critical Natural Landscape

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BioMap2 Core and Critical Natural Landscape Areas that are Undeveloped & Unprotected

Taunton Watershed Town Undeveloped and Unprotected BioMap2 Core Undeveloped and Unprotected BioMap2 Critical Natural

Legend

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Areas of Above Average Resilience BioMap2 Core & Critical Natural Landscape

Green Infrastructure Network Components…

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Legend

Taunton Watershed Boundary Town Boundaries 100-yr and High Risk Coastal Flood Areas

Surface Waters & Wetlands

Freshwater Pond, Lake, or Stream Freshwater Wetland Estuarine and Marine Deepwater Estuarine and Marine Wetland Other

Surface Water & Wetland Areas

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Riparian Buffers

Legend

Taunton Watershed Boundary Town Boundaries Areas within 100ft of surface waters, wetlands, and flood zones 100-yr and High Risk Coastal Flood Areas

Surface Waters & Wetlands

Freshwater Pond, Lake,

  • r Stream

Freshwater Wetland Estuarine and Marine Deepwater Estuarine and Marine Wetland Other

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Riparian Buffer Areas that are Undeveloped & Unprotected

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Green Infrastructure Network Components…

Areas of Above Average Resilience BioMap2 Core & Critical Natural Landscape Areas within 100ft of Surface Waters, Wetlands, and Flood Zones; Areas </= 4m elevation (vulnerable to sea level rise)

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Green Infrastructure Network Components…

Areas of Above Average Resilience BioMap2 Core & Critical Natural Landscape Areas within 100ft of Surface Waters, Wetlands, and Flood Zones; Areas </= 4m elevation (vulnerable to sea level rise)

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Taunton Watershed Green Infrastructure Network

44% of the

Taunton watershed is within the GI Network

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Taunton Watershed Undeveloped & Unprotected Green Infrastructure Network

66% of the GI

Network is currently undeveloped and unprotected. This represents 30%

  • f the entire

watershed area.

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Taunton Watershed Undeveloped & Unprotected Green Infrastructure Network

66% of the GI

Network is currently undeveloped and unprotected. This represents 30%

  • f the entire

watershed area.

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Benefits of Green Infrastructure

  • Control flooding and nonpoint source water

pollution

  • Maximize groundwater recharge
  • Address multiple ecological stressors
  • Attenuate wave energy
  • Reduce infrastructure costs, particularly when

GI network includes protection of naturally

  • ccurring features
  • Maintain public access/recreational use
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Linking Local and Regional Green Infrastructure

  • Benefits of linkage:
  • Contribute to watershed-scale approach to

addressing water balance, water quality and flooding concerns

  • Maximize the utility of local conservation planning
  • Control costs
  • Ecological integrity
  • Quality of life

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Linking Local and Regional Green Infrastructure

  • Mechanisms for linkage:
  • Comprehensive/Master Plans,
  • Cluster subdivision requirements,
  • Open space districts,
  • Transfer of development rights,
  • Water resource protection overlay districts,
  • Floodplain management,
  • Wetland protection districts and bylaws
  • Open space plans.

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Taunton Watershed Green Infrastructure Network & Water Supply Protection

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Taunton Watershed Green Infrastructure Network Vulnerable Places & Case Studies

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Taunton Watershed Green Infrastructure Network Vulnerable Places & Case Studies Halifax Workshop Points

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Water St Flooding (3b) Carver’s Pond

(from Middleboro workshop)

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Walnut St Road Flooding (2b) Nemasket River Ecology

(from Middleboro workshop)

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Runoff into Nemasket

(from Middleboro workshop)

Pratt Farm Dam (2a)

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Plants in the Community

(from Middleboro workshop)

Ball Fields; Flooding (1a) Ball Fields

(from Middleboro workshop)