Classification of the aesthetic value of the selected ...

1 Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 1WP4WP4 aesthetic EVALUATION URBEM urban river Basin Enhancement Methods Classification of the aesthetic value of the selected urban rivers methodology Project Deliverable 4-2 IST-CESUR J. Silva EVK-CT-2002-00082 Deliverable Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 2WP4WP4 aesthetic EVALUATION URBEM Coordination of Work package 4 : Instituto Superior T cnico Centro de Sistemas Urbanos e Regionais (IST CESUR) Av. Rovisco Pais, 1049-001 Lisbon, Portugal Tel. 0351 21 8409705, Fax 0351 21 8409884 or 2004 All methodologies, ideas and proposals in this document are the copyright of the URBEM project participants.

2 These methodologies, ideas and proposals may not be used to change or improve the specification of any project to which this project relates, to modify an existing project or to initiate a new project, without first obtaining written approval from those of the URBEM participants who own the particular methodologies, ideas and proposals involved. This report is a contribution to research generally and it would be impudent for third parties to rely on it in specific application without first checking its suitability. Various sections of this report rely on data supplied by or drawn from third party sources. The URBEM partner organisations accept no liability for loss or damage suffered by the client or third parties as a result of errors or inaccuracies in such third party data.

3 Dissemination Status Public Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 3WP4WP4 aesthetic EVALUATION URBEM Report Authors Part I - Classification of the aesthetic value of the selected urban rivers: methodology Project Deliverable 4-2 Av Rovisco Pais, 1049-001 Lisbon, Portugal Tel: +0351 21 8418311 Fax: +0351 21 840 97 05 IST- CESUR Jorge Batista e Silva, Gra a Saraiva, Isabel Loupa Ramos, Filipa Monteiro, Fernando Nunes da Silva Cristina C mara. Universidade de vora F tima Bernardo, Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 4WP4WP4 aesthetic EVALUATION URBEM Part II - A Site Method for aesthetic Evaluation Institut f r Landschaftsarchitektur TU Dresden Prof.

4 MLA Joachim T. Tourbier Email: Prof. MLA Richard Westmacott Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 5WP4WP4 aesthetic EVALUATION URBEM Summary This document aims at reporting on the approach pursued to establish a methodology to evaluate and classify the aesthetic values of urban watercourses. In the framework of the URBEM the overall aim is the integration of these aesthetic values, that can have both tangible and intangible dimensions, into decision making process for river rehabilitation. Together with these issues, it was intended to analyse the debate on river landscapes quality perception and evaluation, based mainly on expert assessment, but integrating also results deriving from public surveys.

5 CESUR-IST/UTL methodology for the assessment of river corridors is focused in the aesthetical value in order to guide rehabilitation interventions at city scale to make the most of their potential aesthetical value (Part I). Closely linked to this methodology TU DRESDEN developed a Site method for aesthetic evaluation that aims at being specially designed for assessment of project sites before and after improvement (Part II) focused on the project scale. Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 6WP4WP4 aesthetic EVALUATION URBEM Table of Contents Part I - Classification of the aesthetic value of the selected urban rivers: methodology 1 9 2 The 12 Multicriteria approach.

6 12 The 15 Identifying the 16 Structuring the process .. 17 3 Viewpoints for aesthetic 22 23 Natural components .. 23 river morphology .. 29 Integration in the catchment/watershed/ river basin .. 39 Natural and Technological hazards .. 42 43 Cultural 43 urban space quality .. 45 Pollution .. 57 Activities in the river 60 Accessibility .. 61 67 Sensorial fruition .. 67 river LANDSCAPE PERCEPTION .. 69 Identity .. 70 Restorative 72 Perceived Security .. 74 4 Evaluating and 76 Data acquisition and analysis.

7 81 Public 84 5 The Limits of Objectivity and 87 89 Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 7WP4WP4 aesthetic EVALUATION URBEM Part II - A Site Method for aesthetic Evaluation 1 The Site Method in the Context of 95 2 The Method 97 The river .. 99 The 106 The People .. 116 3 The Method 121 Application in light of the URBEM 122 aesthetic inventory of pre-improvement conditions .. 127 Rating aesthetic resources .. 128 Mapping of distribution patterns .. 128 aesthetic Opportunity and Constraint Analysis .. 128 Scientific analysis input through hydrologists and city planners.

8 131 Defining Goals and Objectives under Stakeholder 132 Design criteria, policy determination and planning concepts .. 134 4 134 5 134 6 Appendix : Products and Uses of the aesthetic 136 Project Deliverable 4-2 Classification of the aesthetic value of the selected urban rivers - methodology 8WP4WP4 aesthetic EVALUATION URBEM List of Figures Fig. 1 Main Questions ..9 Fig. 2 Sustainability Paradigm .. 10 Fig. 3 river -City-People framework .. 15 Fig. 4 The Process of MCDA (Belton, 2002).. 16 Fig. 5 Final result of Post-It session with Experts Panel .. 18 Fig. 6 The total cognitive map after modelled by software .. 20 Fig. 7 Minimal network expressing the relationships between fundamental viewpoints.

9 21 Fig. 8 - river corridor based on a buffer of 500 23 Fig. 9 - Riverfront .. 23 Fig. 10 Width of river corridor .. 25 Fig. 11 Distance of vegetation to river margins .. 26 Fig. 12 level of visibility in river corridor ..27 Fig. 13 Vertical structure of vegetation in river 27 Fig. 14 Colour of tree foliage in 29 Fig. 15- Generalized model illustrating hierarchical process and geomorphic variables (after Mount, 30 Fig. 16 City/ river 31 Fig. 17 river width ..32 Fig. 18 river sinuosity .. 34 Fig. 19 A multi-dimensional framework for river management (from Boon, 1992).. 34 Fig. 20 Types of valley 37 Fig. 23 - Strahler s stream order method ( Tibbalds, 1992).. 41 Fig.)

10 24 - Viewsheds of Jardas (Barcarena) stream with intervisibility areas.. 46 Fig. 25 Buildings heights .. 47 Fig. 27 Typology of visual contact with water .. 49 Fig. 28 Typology of visual contact axes with watercourse in Jardas (Barcarena) stream.. 50 Fig. 29 Profiles contact with water from the city to the river and from the river to the city .. 51 Fig. 30 Townscape of Barcarena/Cac m, modelled with a GIS, wraping the Jardas stream .. 52 Fig. 31 Typology of contact with 54 Fig. 32 Physical contact with water: natural and artificial banks .. 54 Fig. 33 Litter on river 58 Fig. 35- 59 Fig. 36 Crossings at Douro river (Oporto), and Thames (Walligford, London).. 62 Fig. 37 Influence of the width in the amount of crossings.