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

• ....