4 March 20094 March 2009 4 March 20094 March 2009
Presentation to
Shannon Protection Alliance,
Dromineer, Co Tipperary
www.watersupplyproject-dublinregion.iewww.watersupplyproject-dublinregion.iewww.watersupplyproject-dublinregion.iewww.watersupplyproject-dublinregion.ie
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
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
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
Dublin Region (Water Supply Area)
1996 2006 2016 2031
Population (000’s) 1180 1370 1685 2180
Average Total Demand (Ml/d)
460 530 630 800
Sustainable Production of Dublin Region Sources (Ml/d)
470 540 630 630
1Ml/d = 1 million litres or 1,000 cubic metres (m3)per day
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
• 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)
450
500
550
600
650
700
750
800
850
2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 2027 2029 2031 2033
Year
Ml/d
Planned Sustainable Production
New Source Required
Average Demand Projections
Kildare (Barrow)
Timing of New Water SupplyRequirement
Low
Low
20% 16%
SCENARIO
Water Conservation Pro-Active
Economic Growth Rate Medium / High
Population Growth Rate Medium / High
Leakage at 2031
Low
Low
Pro-Active
Demand Supply Balance2007 - 2031
17
70
170
280
3
3
75
215
170
32017
Average Dublin Region Demand 2007 – 540 Ml/day
Average Dublin Region Demand 2031 – 800 Ml/day
River Liffey
BallymoreEustaceLeixlip
Roundwood
Ballyboden
Bog of the Ring
New Source
BallymoreEustaceLeixlip
Roundwood
Ballyboden
Bog of the Ring
New Source
Dublin Region Existing Sources
River Liffey will always provide majority of water for Dublin Region
Water Supply Options
Shannon
A. Lough Ree
B. Lough Derg
C. Parteen Basin / Weir
D. Lough Ree - Lough Derg Combination
E. Lough Ree + Storage
F. Lough Derg + Storage
G. Impoundment
Other
H. DesalinationI. GroundwaterJ. Liffey/Barrow
General Comment• Options – not all of equal merit• Capacity Problems• Options – Storage (former bogs) – Environmental (favoured)• Cost
A-Lough Ree
B-Lough Derg
C-Parteen Basin
D-Lough Ree +Lough Derg
E- Lough Ree + Storage
F- Lough Derg + Storage Options
G-Impoundment- Lough Ree [Derg]
H-Desalination
I-Fingal / Kildare Groundwater
J-Liffey / Barrow
LoughRee
LoughDerg
RiverShannon
ATHLONE
MULLINGAR Desalination Plant
Wells
Killaloe
A
B
C
H
G
I
JPORTLAOISESLIEVE BLOOM
MOUNTAINS
TULLAMORE
TerminationPoint
E
F
Parteen Basin
Ballycoolen
Former Bogs
Ballymore Eustace
Athy
RiverBarrow
Impoundment
Poulaphuca Lake
ESB ArdnacrushaRiver Shannon
Head Race
F2
F1D
E
G
LOUGH REE A-Lough Ree D-Lough Ree +Lough Derg
E- Lough Ree + Storage
G-Impoundment- Lough Ree [Derg]
LoughRee
LoughDerg
RiverShannon
ATHLONE
MULLINGAR
A
G
PORTLAOISE
TULLAMORE
TerminationPointFormer Bogs
Impoundment
D
E
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
LOUGH DERG
PARTEEN BASINB-Lough Derg C-Parteen Basin F- Lough Derg
+ Storage Options
LoughRee
LoughDerg
RiverShannon
ATHLONE
MULLINGAR
Killaloe
B
C
PORTLAOISESLIEVE BLOOM MOUNTAINS
TULLAMORE
TerminationPoint
F
Parteen Basin
Former Bogs
ESB ArdnacrushaRiver Shannon
Head Race
F2
F1
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
Killaloe
Parteen Basin
Ardnacrusha
Parteen Weir
180m3/s (avg)
170m3/s (avg)10m3/s (min)
No Abstraction
Killaloe
Parteen Basin
Ardnacrusha
Parteen Weir
176m3/s (avg)
166m3/s (avg)10m3/s (min)
With Abstraction
4m3/s (max)
Limerick
Limerick
LoughDerg
LoughDerg
OTHER SOURCESH-Desalination I-Fingal / Kildare
GroundwaterJ-Liffey / Barrow
LoughRee
LoughDerg
RiverShannon
ATHLONE
MULLINGAR Desalination Plant
Wells
H
I
JPORTLAOISE
TULLAMORE
TerminationPoint
Ballycoolen
Ballymore Eustace
Athy
RiverBarrow
Impoundment
Poulaphuca Lake
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
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)
All Issues Addressed during Assessment of Options
– Technical & Environmental Reports
– Website / Questions & Answers
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
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)Option Technical Environmental Economic Socio-
Economic
X + - ~ -
Y ++ + - +
Z - ++ - ~
++ Major Positive
+ Minor Positive
~ Neutral
- Minor Negative
-- Major Negative
Option Evaluation Summary (Draft)
Economic Socio Economic
Source Infrastructure SEA Habitats Dir (HDA)Capex / Opex / Cost of Water
Delivered
Navigation / Tourism Agriculture/Angling
Local Economy / Flooding etc
Option A - ++ - - - - ++ -
Option B + + ~ ~ + +
Option C ++ ~ + ~ - +
Option D - ~ - - - + -
Option E ~ ++ + - ~ ~
Option F ++ + ++ ~ ~ ++
Option G ~ - - - - - - - -
Option H - - - ~ - - -
Option I Option cannot provide required quantities of water
Option J Option cannot provide required quantities of water
Desalination
Groundwater
Liffey - Barrow Conjunctive Use
Lough Ree (Phase 1) / Lough Derg (Phase 2)
Lough Ree + Storage (Bog)
Lough Derg + Storage (Bog)
Lough Ree (Lough Derg) + Impoundment
Lough Ree
Lough Derg
Description
Parteen Basin
Technical Environmental
Options
Strategic Environmental Assessment & HDA(environmentally favoured)
Shannon
A. Lough Ree
B. Lough Derg
C. Parteen Basin / Weir
D. L Ree – L Derg Combination
E. Lough Ree + Storage
F. Lough Derg + Storage
G. Impoundment
Other
H. Desalination
I. Groundwater (Capacity Issues)J. Liffey/Barrow (Capacity Issues)
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
• 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
• Website www.watersupplyproject-dublinregion.ie – 1,950 Visits– 10,000 Page Views
• Stakeholder Presentations
• General communication – email, phonecall, post – 147 No.
Year No.
2005 20
2006 20
2007 24
2008 55
2009 20 (end Feb)
Total 139