workshop - fenixedu
TRANSCRIPT
Workshop New Life For Urban Streams IIStrategies For Revitalizing TheJardas/Barcarena Stream
• Challenges of the WFD application to Portugal -the basin approach and the institutonal framework;
• Lisbon Metropolitan Area - the Tagus estuary, the coastal area and the streams in the north bank;
• The Jardas / Barcarena stream and watershed
• Issues to develop
Âmbito Ge
Várias
Minho
LimaDouroCávado
AveMondegoVouga
TejoLisGuadiana
Sado
MiraArade95
98 10093 96 97
94 10299 101
10389
91
9088
9286
85
878483
818280 78 79
7468
777675
72
71 6770
73
6669
4140
38 3739 36
2933
64 61
65
34
62
2958
63
5760
32 56
55593130
5348
51 5254
475049
45
442143
22
42
20
1918
17
16
15
14
11 7
6
13
9
84
5
10
3 2 1
12
102
28
2524
27
23
26
46
National and transboundary river basins
institutionalthe new institutional framework
INAG: Water Institutecoordination at national level (and international agenda)
ARH: Hydrographic RegionAdministration or River Basin District Administrationregional/local level: planning and implementation tasksARH with administrative and financial autonomy
New Hydrographic Region CouncilsARH do TEJO
integrated management of terrestrial and coastal areas
institutionalThe ARH mission
• Implementation of a river basin management concept
• Focused on the protection, valorisation and sustainable management of water resources
–– water quality water quality –– water quantity water quantity –– informationinformation
• Regional entities, administrative and financial autonomy, with full competencies on:
– Licensing and surveying water uses; – Promoting water resources requalification and fluvial management– Developing economic analyses of water uses– Raising funds (including establishing and collecting taxes)– Assuring law enforcement– Preparing river basin plans (transboundary issues in cooperation with
INAG)– Implementing the programs of measures for water management– Promoting flood control, drought plans and emergency control– Establishing monitoring programs– Inventoring and managing water protection areas and water bodies for
human consumption
extreme eventsFloods
Directive 2007/60/EC on the assessment and management of flood risks (23 October 2007)
flood risk assessmentflood hazard maps and flood risk mapsflood risk management plans,
within the river basin management plans
ChallengesIntegration of the water policy with other policies (e.g. definition of agreed environmental objectives)
Developmet of methodologies for addressing ecological quality and monitoring programmes
Introduction of cost-effectiveness practices in water resources protection and management
Approval and enforcement of the economical and financial regime
Climate change integration on the water resources planning
Ability to define and manage priorities, establishing short, medium and long-term targets
Fostering stakeholders participation
Dealing with challenging objectives, incresed complexity.
Âmbito Geográfico do Projecto
Várias
Minho
LimaDouroCávado
AveMondegoVouga
TejoLisGuadiana
Sado
MiraArade95
98 10093 96 97
94 10299 101
10389
91
9088
9286
85
878483
818280 78 79
7468
777675
72
71 6770
73
6669
4140
38 3739 36
2933
64 61
65
34
62
29 58
63
5760
32 56
55593130
5348
51 5254
475049
45
442143
22
42
20
1918
17
16
15
14
11 7
6
13
9
84
5
10
3 2 1
12
102
28
2524
27
23
26
46
Tagus river basin
Location
Sintra
Arrábida
Fonte – Atlas da AML, Geografia Física www.aml.pt
Metropolitan Area of Lisbon - North bank - The streams
Sintra
Metropolitain Area of Lisbon - issues related with water/rivers/streams
The problems/issues:• water quality• urban encroachment• groundwater uses and contamination• flood risks• increase in traffic and transportation network • land use planning and management processes
Potential:• landscape values • identity, symbolic values• strategic location• navigation, riverfront activities• microclimate influence• natural resources and habitats • natural and cultural heritage• ….
METROPOLITAN AREA of LISBON
Intense urban growth since the sixtiesstrong polarity of Lisbon for employment and urban transport
Administrative Structure:
Région Lisbon and Tagus Valley Métropolitaine Area of LisbonCCDR AML
The MunicipalitiesCM
METROPOLITAN AREA of LISBON
Land use
Areas of special interest for nature conservation
METROPOLITAN AREA of LISBON
Regional Plan for Metropolitan Area of Lisbon - PROT-AML
Environmental Regional Structure
Municipalities - Municipal Master Plan - PDM
PDM Lisboa_Planta de Ordenamento Estrutura verde
PDM Oeiras - Planta de Ordenamento Cascais - proposta de corredores verdes
Rapid process of urban growth in the XX’s
Cacém em 1893
Cacém na actualidade
Cacém, anos 40
Cacém, anos 80
Imagens da ribeira das Jardas noCacém antes da intervenção Polis
Reabilitação da ribeira das JardasCacém - programa Polis
URBEM
Environmental and Landscape Rehabilitationof streams of the Estoril Coast
Project developed for
2001-2002
Objectives
the establishment of land use and environmental guidelines for the riparian corridors, and minimizing flood risks in the surrounding urban areas;
to develop new concepts for river management and flood protection based on a catchment approach, alternative to traditional engineering works such as channelization with concrete and regular cross-sections;
to increase water infiltration and detention in adequate recharge areas;
to use riparian vegetation to restore bank vegetation and habitats;
to enhance urban adjacent areas, creating park-land, recreation areas and open space for leisure and amenities with increased scenic value;
to promote trails and paths along the streams for leisure and environmental education;
to involve public and private local agencies to promote a better quality of life, create jobs to support leisure and environmental education.
Hydrological Data
2371251,529045,219,233,6BarcarenaBarcarena
Q100m3/s
Q10 m3/s
SlopeMaximum height in
t (m)
Perimeter(km)
Length (km)
Catchmentarea
(km2)
StreamCatchment
2371251,529045,219,233,6BarcarenaBarcarena
Q100m3/s
Q10 m3/s
SlopeMaximum height in
t (m)
Perimeter(km)
Length (km)
Catchmentarea
(km2)
StreamCatchmentCatchment Stream Catchment
Area (km2)Length Perimeter Maximum
Height (m)Slope Q10
(m3/s)Q100(m3/s)
Population Data
45,23 2342 70119,7108 57290 67846,7Barcarena
Urban area %
Pop. Dens. (hab/km2)
2001*
Pop. Dens. (hab/km2)
1991
Rate of variation
%
Inhabit.2001
Inhabit.1991
AreaKm2
Catchment
45,23 2342 70119,7108 57290 67846,7Barcarena
Urban area %
Pop. Dens. (hab/km2)
2001*
Pop. Dens. (hab/km2)
1991
Rate of variation
%
Inhabit.2001
Inhabit.1991
AreaKm2
CatchmentCatchment Area(km2)
Inhab1991
Inhab2001
Rate ofvariation
Pop. Dens (hab/km2)1991
Pop. Dens (hab/km2)2001
UrbanArea%
Existing and future urban areas
Very low: mostly artificial (extensive concrete, sraightened, urban encoachment up to channel margins, etc)
Low: -
Medium: -
High: channel mostly unstraightened, most banks unrocked and vegetated, with native species
Degree of naturalness of river corridor
Legend:
URBEMEXISTING CASE STUDY SELECTIONT2
Catchment land uses
Landscape and cultural heritage
Some topics to be developed:
• City-People-River - Assessing the success of the Polis intervention at Jardas/Cacém (URBEM project - www.urbem.net)
• Retrofit urban neighborhoods for stormwater management
• Modelling issues for river restoration
• Ecological issues - riparian vegetation restoration
• Reinventing the riverfront
• ....