Climate Change (Incriatório/UN Habitat)

risks of urban water problems: flooding and drainage

strategies and measures to achieve urban resilience

climate change

bogotá, october 2014

strategies and measures to achieve urban resilience bogotá, october 2014

water as a friend

water and our senses water and recreation (commercial)


water as a friend

water and health water and recreation (public)


water as a friend

water and education water and nature


water as a problem

water and extreme rainfall water and erosion


water as a problem

diffuse pollution flooding and subsequent damage


water as a problem

lack of recharge capacity for groundwater cost of repair and maintenance


lack of resilience | old paradigma

insufficient drainage systems sealing of surfaces


lack of resilience | old paradigma

less open spaces ... ... and natural retention


approaches to climate change and increasing water issues

ACCEPTmore frequent and intensive flooding and continue to expect more damage, repair and maintenance


INCREASE OLD SYSTEMS


old paradigm using hard technology and closed systems


CHANGE PARADIGM


Strategic Objective of the City of London:Mix of measures including green infrastructure

Gehl Architects: Central City Plan for Christchurch

and allow for new, flexible and progressive concepts using territorial intelligence as a methodological approach


territorial intelligenceto reach integrated solutions and resilience


resilience against climate change in the city

flooding drough heat


resilience against climate change in the city

Make use of Open Space System: Riyadh and Charleston


multifunctional vegetation and water systems

green and blue roofs



green facades



retention and infiltration areas


multifunctional benefits

Ref.: The London Climate Change Adaption Strategy 2011

green roofs/wall street vegetation wetlands river corridors woodlands grasslandsReduce flood risk

Offset urban heat island

Reduce energy demand

Reduce noise / air pollution

Support biodiversity

Recreation / leisure

through green and blue infrastructure


key objectivesQuality

Quantity

Function

Connectivity

Communication

improve the resilience of urban green spaces through proper management and by reducing harmful impacts, such as pollution and invasive species.

protect existing green spaces and increase the area of urban green space by looking for new opportunities, even where there is no apparent ‘space’ for greening the city, considering options such as street vegetation, green roofs and green walls.

design new green spaces into new or refurbished development to maximize their functional use (such as cool-ing or flood storage). Identify and pursue opportunities to enhance the multi-function of existing green spaces.

many of the ecosystem services provided by green spaces would be enhanced by increased connectivity. New green spaces should be designed to improve links between new and existing spaces for people, wildlife and macro-climatic exchange.

ensure good communication, open participation and coherency and transparent processes across all organi-sations working on delivering new green spaces and managing existing ones

rua tonelero, 1254são paulo - sp - brazil

ulrich [email protected]

risks of urban water problems: flooding and drainage

strategies and measures to achieve urban resilienceinternational cases

climate change

bogotá, september 2014


techniques and casesThe Blue House

Mülheim, Germany | 30.000 m2 site area | 200242 one family houses | 12 apartments | Commercial area

• Rain water management integrated in landscape area design

•Collection, retention, infiltration and treatment of rain water

• Run-off and drainage control• “Blue roof” - 300 m2•Compensation of ecological impacts


techniques and casesWohnen am Horbachtal

Mülheim, Germany | 20.000 m2 site area | 200424 houses | 20 apartments

• Rain water management integrated in landscape area design

•Collection, retention, infiltration and treatment of rain water

• Bioremediation of drainage water and flood prevention•Cost reduction of infrastructure•Compensation of ecological impacts• Added value to the business for investor/developer


techniques and casesSaarner Kuppe

Mülheim, Germany | 250.000 m2 site area | 2002Quarter for 3.500 residents, including commercial area and kindergarten• Rain water management integrated in landscape area

design• Retention and infiltration of rain water• Flood prevention•Cost reduction of infrastructure•Compensation of ecological impact• Added value to the business for investor/developer• Upgrade of ecological and residential value


techniques and cases2 Companies Initiatives: Possmann e John Deere

Possmann | Frankfurt | 19963.000 m2

J. Deere | Mannheim | 2000120 m2

• Rain water management integrated in design of archi-tecture and infrastructure

•Collection of rain water• Use of rainwater in the production process• “Blue roofs”•Cooling (Possmann) and treatment (John Deere) of

process water• Bioremediation of drainage water and flood prevention• Energy saving


techniques and casesRiade - Al Ha’ir Lake Area

Riyadh, Saudi Arabia | Project Site 7 km2 | 2009 - to-datePost-treatment of 250.000 m3/day | 4.5 million people

• Rain Water and Treated Sewage Effluents integrated into landscape design

• Bioremediation (post-treatment) of treated sewage effluents from conventional treatment

• Revitalization and value-upgrading of the region• Branding for a new urban development region•New parks and recreation areas• Use of water for irrigation and maintenance of water

bodies

B. Study Area Location

Referred to as ‘Zone Five’ in the Wadi Hanifah Comprehensive Development Plan, the study area is located at the end of the Wadi Hanifah catchment area. It is approximately 30km south of Riyadh, and occupies an area of approximately 5,140 hectares of contiguous land. As part of the vision for this project, the study area has become known as the ‘Lakes District’. It is a predominantly undeveloped site, consisting of a variety of landscape characters, including wetlands, wadis, desert plateau, jebel areas and irrigated agricultural land.

Riyadh’s increasing population is resulting in the expansion of the city toward Al Ha’ir. The Al Ha’ir township is likely to be absorbed by the southern extension of Riyadh within the next 15 years. The total population in Riyadh is expected to grow from its current population of 4.5 million to 5.6 million within the next 15 years.

With such rapid urban growth predicted, the protection and development of the wadi and this site is considered vitally important for Riyadh’s future. The Lakes District already provides a significant open space resource for the communities of Riyadh and Al Ha’ir. The area is informally used for nature-based recreation, picnicking and camping. Visitors are attracted to the study area by both the lush vegetation of Wadi Hanifah and by the appealing scenery of the Tuwaiq Escarpment, broken at this point by Wadi Buayja, a dry sandy wadi with steep rocky side slopes.

AL HA’IR TOWNSHIP

WADI HANIFAH

RIYADH

LAKES DISTRICT

S I t e L o c at I o n p L a n

Kilometers0 5 10

!"#!$%&'$(')*+%'%&#+&%'$(',&&)+-.%

! "#$%&'$()#*+,-)$*(')*').%'/#*0%-)

! 1*(&$#2'344,2/)$*(4'*&'567

! 5+%()$&8'/*)%()$39':3/4'$('$(&*#23)$*(

! 6%;%9*/'3'#3(:%'*&'/*)%()$39'*/)$*(4'&*#'7.34%'<

! =%9%-)').#%%'&*#'&,#).%#'$(;%4)$:3)$*(

! >/)$*(4'?$99').%('@%'/#%4%()%+'@3-A')*'B6B'$('93)%'C*;%2@%#D%3#98'6%-%2@%#

5



Bioremediation



2.3

2.1

2.4

2.5

2.6.1

2.6.2

Intersection ofRailroad and Hawtah Road

New Al Hair Sewage Treatment PLant

Sewage Line Duct

Railroad Line and Bridge

Wadi and Lake AreaDevelopment

PlateauDevelopment Area

Hawtah Road and Bridge

ORIENTATION

Al Hair

Wadi

IntroductionLand AssemblyThe site’s land assembly is relatively simple as the

ADA is the Lakes District major land owner.

Any fragmented and undeveloped plots of land

under private ownership may be brought into the

development at a later date.

Old Al Ha’ir VillageSites of Saudi cultural heritage are becoming

increasingly popular. The continued occupation of

the old town contributes to its value as a cultural

heritage asset which demonstrates the historic

development of the area.

Water Quality Remediation will be required as a result of the poor

quality treated sewage effluent discharged into Wadi

Hanifah from Manfouha Treatment Plant.

Hawta RoadTraffic congestion in Riyadh combined with a lack of

public transport makes the site relatively difficult to

access.

The Hawta Road will significantly improve

connectivity and accessibility to Riyadh and beyond.

Landbridge RailwayLandbridge Railway may be disruptive to the existing

wetland habitat. If located at grade, it will cause

severance and segregate parts of the site.

TourismTourism is recognised to be an important sector in

the context of diversifying and modernising the Saudi

economy.

An evolving population of younger, more liberally

minded Saudis combined with a growing expatriate

community will provide a fresh and diverse market

for new leisure and recreational opportunities in and

around Riyadh.

Physical AttributesThe majority of the site is flat and unvegetated with

landscape that provides limited natural privacy.

The escarpments provide offer shade and cooling

along with a variety of different experiences and

attractive development opportunities.

Environment & SettingThe site contains the only major perennial wetland in

KSA and has status as an Important Bird Area.

The variety, novelty and status of the lush green

wetland habitat makes it extremely valuable and

popular both at a local and international scale.

Pro-active management of the wetland habitat could

preserve this valuable environmental asset and its

international significance for future generations.

Wadi

Al Ha’ir Village

Al Hair Township

Date Farms

Brick works

Rough Terrain

Agriculture

Wetlands

Sewage Treatment Plant(under construction)

Escarpment

Proposed LandbridgeRailway

Existing Roads

Proposed Hawta Highway

Proposed Culvert

Proposed O/H Power lines

Contours (High to Low)

Phase 1 Boundary

To Riyadh

To Sulaymaniyah

1

2

3

4

5

6

7

8

9

10

1 2

3

4

5

67

8

9

10

EcologyAny plans which might cause detriment to the site’s

ecology may be subject to international debate

and criticism if adequate measures to preserve its

integrity are not taken.

Development OpportunityDevelopment adjacent to the wadi is perceived to be

of higher value due to more open views and in some

cases the presence of water and vegetation.

With additional polishing, the TSE from the STP or

Wadi Hanifah could be used to leisure activities such

as boating, fun rides and attractions that involve

close proximity/interaction with water.

Al Ha’ir Sewage Treatment PlantThe visual presence and associated smells of the

Al Ha’ir Sewage Treatment Plant if not carefully

managed could negatively impact perceptions of

future visitors and potential investors.

The Bi-products of the STP may compliment the

local area’s existing economic sectors by providing

water, high nutrient fertilizer and adding organic

matter to the soils to expand the agricultural offer.

Flood RiskThe site is downstream of the Wadi Hanifah, Wadi

Laha and Wadi Buayja catchment areas and so the

site is prone to flash flooding after intense rainfall.

The high permeability of the rock formation means

that it is hard to retain surface water upon the site

without engineering intervention.

RegulationThe size of the site makes it difficult to enforce

regulations that could enhance and maintain its

natural beauty

The complex arrangement of land ownership and

some unclear regulatory designations surrounding

the site may hinder stakeholder buy-in.

UtilitiesThe site is currently un-developed and infrastructure

connection points are some distance away.

A high voltage overhead powerline is proposed to

run adjacent to the Landbridge Railway.

It may also be possible to gain access to electrical

power supply and telecommunications networks

from the planned Al Ha’ir Sewage Treatment Plant or

the existing connections to Al Ha’ir Township.

Current UsesThe site is currently well established as an

agricultural district and regularly used informally for

camping and picnicking.

ContextThere is a severe lack of adequate open space

and leisure resources and recreational facilities in

and around Riyadh. The development of Riyadh

National Park could help to raise awareness of

this site’s environmental assets and attract further

development.

The internationally recognised wetland habitat

provides a strong foundation for a leisure based

destination which will contribute to a positive affect

on land value within the project area.

The Lakes District


current projectsHouse in São Paulo

ÁGUA DE CHUVA

ÁGUA CINZA

ÁGUA FILTRADAREUSO: irrigação / limpeza / descarga

REDE PLUVIAL“ladrão”

REDE PLUVIAL

BOMBA

CISTERNA

FILTRO NATURALplantas + substrato

FILTRO PRÉVIO E CAIXA DE INSPEÇÃO

areia e brita

RESERVATÓRIO

•Rain water management integrated in landscpape design•Bioremediation of excess water (rain

water and grey water)•Use of water for all non-potable pur-

poses


current projectsSports Club in São Paulo

TELHADOfonte de água

ESCRITÓRIOS / AUDITÓRIO

TELHADOfonte de água

Ladrão do telhado

TEATROCaixa cênica

TEATROPlatéia

Drenagem

Reservatório 2Subterrâneo

JARDIM VERTICAL“TELHADO AZUL”com nível de água e plantas aquáticas / palustres(aprox. 150 kg/m2)

DECKpara extensão da área funcional / lazer

OPÇÃOBomba de água do subsolo (para assegurar alimentação dos reservatórios)


current projectsAdministrative Centre of Belo Horizonte (competition)

FONTES DE ÁGUA

1 . CHUVA

2 . LENÇOL FREÁTICO

3 . AR-CONDICIONADO

4 . LAVATÓRIOS [ÁGUA CINZA]

TANQUES

1 . CHUVA + LAVATÓRIOS

2 . LENÇOL FREÁTICO + CHUVA TRATADA

3 . AR-CONDICIONADO + DRENAGEM FLOREIRAS

CAIXAS D’ÁGUA

1 . IRRIGAÇÃO

DESCARTE - ESGOTO

1 . BANHEIROS - DESCARGA

2 . BANHEIROS


current projectsWalkway Corridor “Roque Adoglio” in São Paulo

•Rainwater Management integrated in Landscape Design•Design Development on the

basis of a participation process•Rediscover of “forgotten”

hydrological city pattern•Awareness and sensibilisation

for water and nature in the city•Criation of new open space

quality and functional upgrading


mechanisms

Smart grid for water

Payment for environmental services

Autonomy for water bodies and rain water


challengesregulatory: incentives and taxation

green and blue infrastructure

accessible technologies

scientific background, data and measures

alignment of the future of city and countryside


challenges

Government

Public and Private Sectors

Private Sector and Universities

Universities

All

regulatory: incentives and taxation

green and blue infrastructure

accessible technologies

scientific background, data and measures

alignment of the future of city and countryside

rua tonelero, 1254são paulo | sp | brazil

ulrich [email protected]

Climate Change (Incriatório/UN Habitat)

Documents

Transcript of Climate Change (Incriatório/UN Habitat)