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SATELLITE URBAN WATERS OBSERVATORY INITIATIVE THE SUWOBI PROJECT

Satellite Urban Waters OBservatory Initiative

THE SUWOBI PROJECT SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Outline

• Context
• Objectives
• Workplan
• Participants
• Budget

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

The context

• Degradation of urban lake water quality
• Increase of uses and human pressure
• Environmental regulation
• Stakeholders need

– Data at a relevant time scale – Warning systems for management purposes

• Bathing authorisation
• Hydraulic control

– Forecast systems for management purposes too

• Modification of treatment processes in a drinking water treatment

plant

• Maintenance of water bodies (aesthetic value, …)

Increasing the need for monitoring receiving systems Assessment of human activities’ effects on water quality SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

The context

• Urban aquatic environments : urban lakes

– Very high social value (recreation, …)

• State of the art :

– London Lakes Project – PROLIPHYC – Remote sensing Water quality, Finland

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Objectives and work plan

• Objectives:
• rise accurate data which are able to easily adjust to

changes

• provide support for the water policy
• give information to the public on time in agreement with

the local social context.

• Work Plan

– Year 1 : Preliminary fieldwork, setup of systems – Year 2 : Field Surveys and data collection – Year 3 : Data coupling and dissemination of results

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

1) Social and economical studies

• Study of the regulation context

– Water quality international regulation for uses and water bodies (WHO recomandations, European directives) – Water quality national regulation for uses and water bodies

• Field survey :

– Local regulation – Local main stakeholders (managers of uses, electives, non governmental organisation representatives…) – Local needs and problems for water quality

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

2) Development of water quality assessment tool

• Setup of sensors, collection and transmission of

data

• Satellite data
• Data Coupling

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Fixed monitoring sites Non fixed monitoring sites ‐ Manually operated

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

“Traditional” water quality monitoring

How to select monitoring sites? …

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Water quality monitoring – the importance of spatial variations

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Water quality monitoring Sensor’s Remote control

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

www.nasa.org

Observation of water bodies with satellite data State of the art

Outline of water bodies Organic pollutions Water temperatures Sedimentation processes ..... Advantages: + Coverage of large areas + Derivation of many water related parameters + Fast correspondence “real time possible” + Diversity of satellite sensors for special purposes

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative Outline of water bodies

www.nasa.org

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

www.nasa.org www.nasa.org

Organic pollution (algae, multispectral) Temperatures (infrared) SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

www.nasa.org

Sedimantation (multispectral) Computation of sediment heights

www.nasa.org

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Precise observation of surface properties Detailed measurements of water quality in different water depths

Outstanding criteria

Spatial resolution of data

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

3) Case studies/Project areas

3.1 Bourget lake, French Alpes 3.2 Muna Reservoir, Bogota – Colombia 3.3 Taihu Lake, China

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Surface : 4 450 ha Uses : water supply, recreation, flooding control

Bourget Lake

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Muña Reservoir

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Maximun Level 750 Ha Minimun Level 420 Ha

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

July, 2003

• Different uses of water due

to the water quality

Types and uses of Tai hu Lake

Ⅲ 77% Ⅳ 14% Ⅴ 6% ＜Ⅴ 3%

Taihu Lake

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

Floating water collection device Stable water collection station

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative SUWOBI ‐ Satellite Urban Waters OBservatory Initiative SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 Initial Workshop (to be held in France) Assessment of uses and social economic studies Selection of sensors and parameters Preliminar field work Preparation of satellite data Setup of transmition system Setup of sensor's remote control using GPS‐based devices Intermediate Workshop 1 (To be held in China) Field work Coupling sensor data and satellite data Intermediate Workshop 2 (to be hedl in Colombia) Developing alerts system using a web‐based interface Result's disemination Final Workshop (To be held in France) Year 1 Task Year 2 Year 3

4 Schedule/Work Plan

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

5) Participants

• LEESU (Cereve), Ecole des Ponts Paristech

(France)

• Cisalb (France)
• Los Andes University (Bogota, Colombia)
• EAAB – EMGESA – EEB (Bogota, Colombia)
• Nanjing University (China)
• State Key Laboratory of Lake Science and

Environment (China)

• University of Innsbruck (Austria)

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative France – LEESU (Cereve)

6) Budget

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative Colombia

SUWOBI ‐ Satellite Urban Waters OBservatory Initiative China – Nanjing University SUWOBI ‐ Satellite Urban Waters OBservatory Initiative

7) Results and outlook

Innovative method to derive water quality data for urban water bodies Distributed data in a very high spatial and temporal resolution Transfer of the methodology to other project areas Data basis for public, stakeholders and scientists Early warning system SUWOBI ‐ Satellite Urban Waters OBservatory Initiative