Watershed Planning Watershed Planning Workshop Workshop Workshop - - PowerPoint PPT Presentation

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Watershed Planning Watershed Planning Workshop Workshop Workshop - - PowerPoint PPT Presentation

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Watershed Planning Watershed Planning Workshop Workshop Workshop Workshop Upper Upper Mainstem Upper Mainstem Upper Mainstem & Middle Mainstem & Middle & Middle & Middle Four Mile Run Four Mile Run November 30, 2011

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Watershed Planning Watershed Planning Workshop Workshop Workshop Workshop

Upper Upper Mainstem Mainstem & Middle & Middle Upper Upper Mainstem Mainstem & Middle & Middle Four Mile Run Four Mile Run

November 30, 2011 November 30, 2011 , Fairlington Fairlington Community Center Community Center

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Arlington’s watersheds Chesapeake Bay watershed watershed

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Watershed Watershed Planning Planning Watershed Watershed Planning Planning

  • Initiated May

Initiated May 2008 2008

  • Initiated May

Initiated May 2008 2008

  • Contracted to Center for Watershed Protection

Contracted to Center for Watershed Protection

  • Result is an inventory of potential

Result is an inventory of potential stormwater stormwater

  • Result is an inventory of potential

Result is an inventory of potential stormwater stormwater retrofit projects. retrofit projects.

  • Anticipates Chesapeake Bay clean

Anticipates Chesapeake Bay clean-up up

  • Anticipates Chesapeake Bay clean

Anticipates Chesapeake Bay clean up up requirements requirements

  • Part of Arlington’s

Part of Arlington’s Stormwater Stormwater Master Plan Master Plan a t o gto s a t o gto s Sto ate Sto ate aste a aste a update update

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Stormwater Stormwater Master Master Plan Update Plan Update Stormwater Stormwater Master Master Plan Update Plan Update

  • Storm Sewer Capacity Analysis

Storm Sewer Capacity Analysis to study

to study

  • Storm Sewer Capacity Analysis

Storm Sewer Capacity Analysis to study

to study the County's current storm sewer pipes. the County's current storm sewer pipes.

County County wide stream inventory wide stream inventory to assess

to assess

  • County

County-wide stream inventory wide stream inventory to assess

to assess stream conditions and prioritize stream restoration stream conditions and prioritize stream restoration projects. projects.

  • Watershed

Watershed plans plans to identify locations where

to identify locations where stormwater stormwater treatment facilities can be added to treatment facilities can be added to help slow down and filter help slow down and filter polluted polluted stormwater stormwater runoff. runoff.

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Storm drain to local stream…

Water in storm drains does not go to a treatment plant… g p

To the To the Potomac River On to the Chesapeake Bay

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Sediment and Nutrients Sediment and Nutrients

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Effect of Urbanization on Watersheds Effect of Urbanization on Watersheds

Impervious surface Runoff speed and volume Water Quality Groundwater supply supply

Stream Corridor Restoration, FISRWG, 1998

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Effect of Urbanization on Watersheds Effect of Urbanization on Watersheds

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Severe streambank erosion and habitat degradation

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Stormwater Stormwater Retrofits Retrofits Stormwater Stormwater Retrofits Retrofits

A A retrofit retrofit is a is a stormwater stormwater management management g facility designed to facility designed to slow and treat polluted slow and treat polluted stormwater stormwater runoff runoff that is currently that is currently y uncontrolled. uncontrolled.

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Why Why Stormwater Stormwater Retrofits? Retrofits? Why Why Stormwater Stormwater Retrofits? Retrofits?

  • Stormwater

Stormwater retrofits retrofits provide our best provide our best

  • pportunities to improve watershed health, along
  • pportunities to improve watershed health, along
  • pportunities to improve watershed health, along
  • pportunities to improve watershed health, along

with redevelopment and stream restoration. with redevelopment and stream restoration.

  • Required to meet Chesapeake Bay clean

Required to meet Chesapeake Bay clean-

  • up

up q p y q p y p goals. goals.

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Why Why Stormwater Stormwater Retrofits? Retrofits? Why Why Stormwater Stormwater Retrofits? Retrofits?

Stormwater Stormwater retrofits will help: retrofits will help: Stormwater Stormwater retrofits will help: retrofits will help:

  • Clean and filter pollutants from runoff

Clean and filter pollutants from runoff

  • Slow and temporarily store

Slow and temporarily store stormwater stormwater runoff runoff

  • Slow and temporarily store

Slow and temporarily store stormwater stormwater runoff runoff

  • Improve water quality in our local streams

Improve water quality in our local streams

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Impervious cover in Arlington = in Arlington 41% or 6875 acres

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% Impervious Cover - 2009

44 41 Fairlington-Bradlee County 42 Lucky Run 38 52 Arlington Forest Bailey's Branch 42 42 FMR Middle Upper Long Branch 33 42 FMR Upper 2 FMR Middle 36 FMR Upper 1

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Impervious cover in Arlington County - 2007

Alley 0.2% Airport 3.8% Buildings 30 1% Handicap ramp 0.1% Driveway 7.4% 30.1% Parking lot 15.7% Paved median 0.6% Sidewalks 8.4% Roads Roads 33.8%

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Watershed Planning Status Watershed Planning Status Watershed Planning Status Watershed Planning Status

  • >600 projects identified

>600 projects identified

  • 2 Green Streets projects constructed

2 Green Streets projects constructed

  • Multiple projects in design

Multiple projects in design

  • Multiple projects in design

Multiple projects in design

Williamsburg Blvd median (Old Dominion to 35th St N) Williamsburg Blvd median (Old Dominion to 35th St N)

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Can Retrofits Alone Protect Our Can Retrofits Alone Protect Our St ? St ? Streams? Streams?

  • Time and funding limitations mean

Time and funding limitations mean

  • Time and funding limitations mean

Time and funding limitations mean implementation will be incremental. implementation will be incremental.

  • <10% of impervious area can be retrofitted

<10% of impervious area can be retrofitted

  • Retrofits alone cannot solve

Retrofits alone cannot solve current flooding, current flooding, infrastructure and stream erosion problems. infrastructure and stream erosion problems. C t t C t t d ill f d d i l t d ill f d d i l t

  • County must

County must and will fund and implement and will fund and implement infrastructure infrastructure updates updates and and stream restoration stream restoration projects in addition to retrofits. projects in addition to retrofits. projects in addition to retrofits. projects in addition to retrofits.

  • Implementation on private property is essential

Implementation on private property is essential for significant change for significant change for significant change for significant change.

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StormwaterWise StormwaterWise Landscapes Landscapes Incentive Program Incentive Program

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Homeowner retrofit examples Homeowner retrofit examples

Cistern Rain Garden

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Green roofs

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Homeowner retrofit examples Homeowner retrofit examples Homeowner retrofit examples Homeowner retrofit examples

Rain Barrel(s) Pervious Pavement

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Questions?? Questions?? Questions?? Questions??

 Christin Jolicoeur, Watershed Planner

Christin Jolicoeur, Watershed Planner

 Christin Jolicoeur, Watershed Planner

Christin Jolicoeur, Watershed Planner

 Phone

Phone: (703) 228 : (703) 228-

  • 3588

3588

 Email:

Email: cjolicoeur@arlingtonva us cjolicoeur@arlingtonva us

 Email:

Email: cjolicoeur@arlingtonva.us cjolicoeur@arlingtonva.us

 Web:

Web: www.arlingtonva.us www.arlingtonva.us Residents Residents Residents Residents Environment Environment Watershed Management Watershed Management Watershed Management Watershed Management

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To Learn More To Learn More

Stormwater Stormwater Master Plan Update Master Plan Update

http://www.co.arlington.va.us/departments/EnvironmentalServices/epo/page74076.aspx ttp://www.co.arlington.va.us/departments/EnvironmentalServices/epo/page74076.aspx

Watershed Retrofit Planning Watershed Retrofit Planning Watershed Retrofit Planning Watershed Retrofit Planning

www.arlingtonva.us/departments/EnvironmentalServices/epo/page67082.aspx www.arlingtonva.us/departments/EnvironmentalServices/epo/page67082.aspx

StormwaterWise StormwaterWise Landscapes Landscapes

www.arlingtonva.us/stormwaterwise www.arlingtonva.us/stormwaterwise

Rain Rain Gardens for Homeowners Gardens for Homeowners Workshops Workshops

htt // i /i d ?NID 977 htt // i /i d ?NID 977 http://www.novaregion.org/index.aspx?NID=977 http://www.novaregion.org/index.aspx?NID=977

Rain Barrel Workshops & Sales Rain Barrel Workshops & Sales

http http:// ://www arlingtonenvironment org/barrel php www arlingtonenvironment org/barrel php http http:// ://www.arlingtonenvironment.org/barrel.php www.arlingtonenvironment.org/barrel.php

Green It! Workshop Series Green It! Workshop Series

http://www.arlingtonva.us/portals/topics/Climateevents.aspx http://www.arlingtonva.us/portals/topics/Climateevents.aspx p g p p p p g p p p

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