slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
4 March 2009 PowerPoint Presentation
Download Presentation
4 March 2009

Loading in 2 Seconds...

play fullscreen
1 / 26

4 March 2009 - PowerPoint PPT Presentation


  • 48 Views
  • Uploaded on

Presentation to Shannon Protection Alliance, Dromineer, Co Tipperary. 4 March 2009. www.watersupplyproject-dublinregion.ie. Presentation Content. Background / Current Status Need / Extent / Timing – New Water Supply Water Supply Options Principal Stakeholder Issues

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about '4 March 2009' - teagan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Presentation to

Shannon Protection Alliance,

Dromineer, Co Tipperary

4 March 2009

www.watersupplyproject-dublinregion.ie

presentation content
Presentation Content
  • Background / Current Status
  • Need / Extent / Timing – New Water Supply
  • Water Supply Options
  • Principal Stakeholder Issues
  • Option Evaluation Methodology / Evaluation Summary
  • Overall Summary
background current status
Background / Current Status

1996 Strategic Study (DEHLG)

2000 Review of Strategic Study (3 Options)

2004/5 Feasibility Study

2006 Public Consultation (3 No) – (SEA Phase 1)

2007/8 Expanded Range of Options (10 No) – Assess

2008/9 Public Consultation SEA Phase2 – Nov 08 - Feb 09

2009 Shortlist / Preliminary Reports / Preferred Option

2009+ EIA / Public Consultation / An Bord Pleanala

need for new water supply
Need for New Water Supply

Water Demand Growth

  • Population

- 1.5m (2008)  2.2m (2031)

  • Leakage

- 43% (1997)  30% (2008)  20% (2031)

- Network Rehabilitation (€ 120m – 2007 / 2012)

  • Water Conservation

- By-Laws / Awareness

- Metering (non-domestic)

  • Economic Growth

- Cyclical / Increase over Long Term

slide5

Extent of Water Supply Requirement2016 / 2031

Average 170Ml/d

Peak 80Ml/d

Midlands 50 Ml/d

Contingency 50 Ml/d

Total 350Ml/d

abstraction flow rates
Abstraction – Flow Rates
  • 170 Ml/d (average Dublin requirement - 2031) ≈2m3/sec
  • 350 Ml/d (Peak + Midlands + Contingency - 2031) ≈4m3/sec
  • Average Shannon Flow Lough Ree ≈100 m3/sec
  • Average Shannon Flow Lough Derg ≈180 m3/sec
  • Peak Shannon Flow ≈800 m3/sec

(Liffey Average Flow Leixlip ≈15 m3/sec)

timing of new water supply requirement

850

800

Average Demand Projections

750

New Source Required

700

Ml/d

650

Planned Sustainable Production

600

SCENARIO

550

Medium

Low

Population Growth Rate

Low

/ High

Kildare

(Barrow)

Leakage at 2031

20%

16%

500

Water Conservation

Pro-Active

Pro-Active

Medium

Low

Economic Growth Rate

450

Low

/ High

2003

2005

2007

2009

2011

2013

2015

2017

2019

2021

2023

2025

2027

2029

2031

2033

Year

Timing of New Water SupplyRequirement
demand supply balance 2007 2031
Demand Supply Balance2007 - 2031

Average Dublin Region Demand 2007 – 540 Ml/day

Average Dublin Region Demand 2031 – 800 Ml/day

Dublin Region Existing Sources

River Liffey

River Liffey will always provide majority of water for Dublin Region

water supply options
Water Supply Options
  • General Comment
  • Options – not all of equal merit
  • Capacity Problems
  • Options – Storage (former bogs) – Environmental (favoured)
  • Cost
slide10

Athy

River

Barrow

G-Impoundment- Lough Ree [Derg]

I-Fingal / Kildare Groundwater

E- Lough Ree + Storage

A-Lough Ree

C-Parteen Basin

J-Liffey / Barrow

B-Lough Derg

D-Lough Ree +Lough Derg

F- Lough Derg + Storage Options

H-Desalination

MULLINGAR

Desalination Plant

Lough

Ree

H

Wells

A

G

I

Ballycoolen

E

E

ATHLONE

D

F1

TerminationPoint

Former Bogs

TULLAMORE

F2

River

Shannon

G

Impoundment

Ballymore Eustace

F

Poulaphuca Lake

B

Lough

Derg

J

SLIEVE BLOOM

MOUNTAINS

PORTLAOISE

Killaloe

Parteen

Basin

Head Race

C

River Shannon

ESB Ardnacrusha

slide11

LOUGH REE

G-Impoundment- Lough Ree [Derg]

E- Lough Ree + Storage

D-Lough Ree +Lough Derg

A-Lough Ree

MULLINGAR

Lough

Ree

A

E

ATHLONE

D

TerminationPoint

Former Bogs

TULLAMORE

River

Shannon

G

Impoundment

Lough

Derg

PORTLAOISE

lough ree a d e g
Lough Ree (A, D, E, G)
  • Sluice Operations – Water Levels / Downstream Flows (min 12m3/sec)
  • Current Operation (ESB / WI Regs) – Balance Navigation / Flooding
  • Hydrological Modelling of Shannon & Abstraction Impacts
  • Abstraction – Modify Sluice Operations / Increase Seasonal Flood Risk
  • Abstraction – Increase Min Flow Durations (Dry Periods)
  • Flood Risk Increase / Increased Duration Min Flows

– Environmental Issues Lough Ree / Callows

slide13

LOUGH DERG

PARTEEN BASIN

F- Lough Derg + Storage Options

B-Lough Derg

C-Parteen Basin

Lough

Ree

MULLINGAR

ATHLONE

F1

TerminationPoint

Former Bogs

F2

TULLAMORE

River

Shannon

F

B

Lough

Derg

SLIEVE BLOOM

MOUNTAINS

PORTLAOISE

Killaloe

Parteen

Basin

Head Race

C

River Shannon

ESB Ardnacrusha

lough derg parteen basin b c f
Lough Derg / Parteen Basin (B, C, F)
  • Storage Reservoir – Ardnacrusha (ESB)
  • Water Levels – Normal Range 460mm / 18”
  • ESB Abstraction – 170 m3/sec avg

– 400 m3/sec max ( zero min)

  • Shannon River 10m3/sec min
  • Abstraction Dublin – Reduces ESB Abstraction

eg 170 m3/sec – 4 m3/sec = 166m3/sec avg

  • Water Levels Not Impacted
  • Residence Time (L Derg in Dry Periods) – Offset by Storage
lough derg parteen basin average flows abstractions
Lough Derg / Parteen Basin– Average Flows & Abstractions

With Abstraction

No Abstraction

4m3/s (max)

Lough

Derg

Lough

Derg

180m3/s (avg)

176m3/s (avg)

Killaloe

Killaloe

Parteen Basin

Parteen Basin

Parteen Weir

Parteen Weir

170m3/s (avg)

166m3/s (avg)

10m3/s (min)

10m3/s (min)

Ardnacrusha

Ardnacrusha

Limerick

Limerick

slide16

Athy

River

Barrow

OTHER SOURCES

I-Fingal / Kildare Groundwater

J-Liffey / Barrow

H-Desalination

MULLINGAR

Desalination Plant

Lough

Ree

H

Wells

I

Ballycoolen

ATHLONE

TerminationPoint

TULLAMORE

River

Shannon

Impoundment

Ballymore Eustace

Poulaphuca Lake

Lough

Derg

J

PORTLAOISE

desalination
Desalination
  • Technically Feasible
  • Technology Improving Continuously
  • Increased Usage (Israel / Southern Med / Spain / Australia etc)
  • High Energy Requirement & Carbon Footprint
  • Environmental Issue – Brine Dispersion
  • Expensive (40% more than most expensive Shannon option)
other sources assessed
Other Sources Assessed

Groundwater Specialist Study – Eugene Daly & Associates

  • Estimated 110Mld “Developable Resource”– 80km radius Dublin
  • Technical / Planning / Legal / Economic Risk

Liffey & Barrow Conjunctive Use

  • Operational Issues
    • Flood Risk / Inefficient
  • Capacity 20Mld - 40Mld
principal issues consultations to date
Principal Issues(Consultations to date)

Socio – Economic

- Navigation / Tourism

- Angling / Fisheries

- Agriculture / Local Economy

- Water Local Use / Flooding

Environmental

- Flows / Levels / Residence Times

- Climate Change

- Water Quality

- SAC / SPA / NHA

Water Conservation

- Leakage / Metering

  • All Issues Addressed during Assessment of Options
  • Technical & Environmental Reports
  • Website / Questions & Answers
option evaluation methodology
Option Evaluation Methodology

Principles

  • Water Supply Scheme must be Sustainable

– Environmental / Economic / Socio-Economic (Balance)

  • Abstraction of Water can not be at the expense of any other community

Methodology (assessment of options / sustainability criteria)

strategic environmental assessment hda
Strategic Environmental Assessment & HDA

Other Benefits

  • Treated Water Supplies – Offaly / Westmeath
  • Lough Owel

– Supplies to Royal Canal

  • Focus on Water Quality (Strategic Supply Source)
  • Midlands Environmental Parks
  • Hydrological Model – Enhanced Shannon Management (ShIRBD)
summary
Summary
  • New Supply Required – Dublin Region – Approx 2016 +
  • 10 Supply Options Evaluated – Tech / Env / Econ / Socio-Econ
  • Public Consultation : 24 Nov 2008 – 27 Feb 2009
  • Evaluation of Feedback / Shortlist – Sustainable Development
  • Preliminary Report (s) – Shortlisted Options
  • No Decision Made
  • Recommendation to DCC / DEHLG – Autumn 2009
  • Post 2009 – Formal Planning Process (An Bord Pleanala)
  • Multiple future opportunities for formal and informal consultation
  • Extensive feedback to date
consultation to date
Consultation to date
  • Website www.watersupplyproject-dublinregion.ie
    • 1,950 Visits
    • 10,000 Page Views
  • Stakeholder Presentations
  • General communication
    • email, phonecall, post – 147 No.