The cLIMA sin Riesgo research project in Lima, Peru, adopts participatory mapping as a means to gather quantitative and qualitative information to capture varying degrees of natural and man-made conditions of vulnerability that affect women and men living in the center and in the periphery of the city. The process is designed to open up dialogue between various stakeholders, with the aim of informing the design of interventions that prevent and reduce risks.

To better understand the everyday risks that inhabitants of the two case study sites are exposed to, we spatialise our inquiry capturing how these risks are distributed and where they accumulate in space (Figure 1). This is a necessary step in identifying how, and where, risk traps need to be disrupted. Preliminary findings suggest that actions taken in one place to mitigate risk may, in effect, externalise the risk to other locations. Hence mapping to make visible the interdependencies that constitute and shape a given territory becomes a vital step in our enquiry, particularly as we seek to devise solutions for an integrated, and co-produced planning.

Figure 1. Drone image of Barrios Altos used to identify residential plots, cultural heritage buildings and other uses such as storage, which is defacing the historic centre. Photo: Rita Lambert

This notion of interdependencies materialise at different scales in both Barrios Altos (BA) and José Carlos Mariátegui (JCM). Therefore the analysis is undertaken at various scales. In BA, some of the quintas (multi familiar residential plots) that have private ownership, also present a weakened social organisation.  The quinta, which used to function as an identifiable unit, with common areas and the shared goal amongst residents to improve these areas collectively, now works as a group of individual structures.  The impact of such changes is noted as some households undertake improvement works and in doing so, move away from the traditional one storey structure made of adobe, replacing it with multi-storey brick and concrete buildings. As the structural integrity of the buildings are weakened due to the disparate materials used, the residents are differentially exposed to risk. Besides the increased physical risks that such practices bring, the weakened collective action and organisation also increases the vulnerability of residents to land trafficking activities.

Figure 2. Surveying team in action in BA. Photo Rita Lambert

Moving out of the quinta and analysing the scale of the manzana (block), it is possible to capture the increasing threats which are claiming the Historic Centre. Land speculation is leading to the slow eviction of  many vulnerable tenants. Moreover, the cancerous growth of storage facilities, also increases the likelihood of fires with the storage of highly flammable materials. If a quinta is adjacent to any of these conditions, it is also more vulnerable, as different land use types interact to increase risk.

In JCM, the interdependencies materialise on the slope. Risk is unevenly distributed with those higher up the slope having to pay more to mitigate risk and make the area habitable. However the occupation in the higher parts, as well as the opening up of roads by large scale land traffickers to capitalise in this area, also increases risk for the lower parts e.g rock falls etc. The latter also have to invest to cope with this risk. Hence mapping at the scale of settlements can make visible where risk mitigation strategies are taken and where risk is externalised to.

Figure 3. Undercutting of slope to create a habitable plot led, in this case, to the partial collapse of the foundation of an existing structure. Photo: Rita Lambert

Having analysed how risk is mapped by various institutions in Lima, the project acknowledges the need to work at a finer scale. Many of the official maps homogenise risk painting large areas in red, whilst a more grainier and differentiated understanding of everyday risk is sought in this project. For this purpose, the base maps used also need to be at a level which show subdivisions in built structures. As the Cadastral Institute of Lima only provides the information at manzana or plot level, the SEDAPAL maps are hereby used as a base because  they show water connection in every household and thus capture subdivisions. Furthermore, in the process of data collection, high resolution drone images for each area are used in a process of manual mapping (Figure 1) undertaken in parallel to digital mapping using EpiCollect+, a free application on smartphones which enables the digitalisation of surveys as these are collected.

Figure 4. Inhabitants of JCM indentifying their plots and the limits of their settlements. Photo: Rita Lambert

Departing from the need to map everyday risks at various scales, the project will undertake geo-referenced surveys in both areas at: 1) the household level, to assess the individual investments made to mitigate risk; and 2) at the quinta level in BA and the settlement level in JCM, to assess the collective investments.  The data collection takes a significant representative number: in BA, 30% of quintas in a manzana (40 manzanas in total are chosen, representing half of BA area) and in JCM, 30% of occupied plots for each of the 11 settlements under study. The participatory nature of the process involves capacity building in mapping, the integration of residents in data collection, and the co-design of the survey to include information that inhabitants deem important to them. This means that the method is also used to strengthen existing processes of change, particularly supporting social mobilisation and integrated planning. In BA, community leaders, accompany the fieldwork, sharing information and communicating with others in their neighborhood. This is a necessary step to promote collective action and resist unwanted changes. In JCM, on the other hand, identifying the various investments made over time in each settlement, and making visible the increased investments that need to be made to continue this form of urbanisation raises consciousness of the ripple effect created by atomised actions upon the territory.  This paves the way for an integrated planning between settlements but also more coordinated actions between inhabitants and state agencies.

For more information of the research project cLIMA sin Riesgo please visit the site: http://www.climasinriesgo.net/

You can also access some of the outputs released so far in the following links:

Newsletter No 1, June 2015 “Reframing Urban Risks”

Policy Brief: No 1, June 2015 “Urban Risk: In search of new perspectives”

Video Interview with Principal Investigator of cLima sin Riesgo, Adriana Allen, about the importance of amplifying knowledge of everyday and episodic risks and the objectives of the project

Rita Lambert is a teaching fellow at the Development Planning Unit, UCL, where she is primarily engaged in the planning and delivery of the practice module of the MSc in Environment and Sustainable Development.

Originally from Ethiopia, she undertook her university studies in Edinburgh and London. She graduated from the Architectural Association in London, where she later taught for 4 years in the final years of the Diploma in Architecture.  In 2009, she studied in the MSc in Environment and Sustainable Development, at the Development Planning Unit , UCL.

Her particular interest lies in mapping, as a tool which can be adopted by ordinary citizens to navigate institutional barriers and expand the room for manoeuvre towards environmentally just urbanisation.