In Pursuit of Greener Cities: GeoData for Urban Landscape Development Opportunities in Dar Es Salaam

Efforts to achieve sustainable urban development in Dar es Salaam by identifying opportunities for public landscaping and urban forestry projects that can create benefits in urban environments

Photo; Aisha Hamisi
Students get hands-on experience using mobile apps for data collection and local devices
  • Residential areas: The information collected on residential includes the structure of buildings and their uses i.e if the building is commercial-residential. Other architectural details include the roofing type such as flat, gable, mono-pitch, or double-pitch, and the material i.e iron sheet, thatch, stone, wood, textiles, and concrete, and the structure’s state. This information is to understand the details of the settlement structure and its composition.
  • Open Spaces: The information collected in open spaces includes location, ownership (public/private), current use, services available in the vicinity, and so on. A total of 121 open spaces were collected. The analysis of data collected indicates that 31% of open spaces are used as urban farmland, followed by brownfields (26%), landfills (13%), gardens (12%), recreation grounds (6%), cemeteries (5%), parking (4%), forestry (3%), and commercial (1%). This suggests that, despite the fact that grass is the most common surface, agriculture and brownfields make the soil more exposed to erosion. The analysis can be used by urban planners to assess and make decisions about the revised urban landscape design and used for a greener city.
A map showing the location of open spaces collected in the sampled land use types.
  • Boreholes: The information gathered includes the coordinates of the boreholes, the region, the district, and the ward and sub ward. And the image of the boreholes can be used as proof to further explain who the borehole’s owner is.
  • Highway and natural drains; Information on road type, use, and condition i.e good, Intermediate, or bad. This data is essential when analyzing or proposing the uses of open spaces as the accessibility of the space plays a greater role in what uses will be conducive.
  • The extent of littering: This was based on the observation of the situation i.e students observed if the letter is few, many, or heavily littered with significant accumulation of waste, the type of litter found in the area (biodegradable waste, like food flowers), general waste (like food wrappers, paper), plastic waste (nylon), hazardous waste (medical, solvent bottles), and construction waste (demolition waste).
Types of litter found in the AoI
Student mapper taking a picture of accumulated litter in an open space in Tabata ward
  • Tributaries; the tributaries were surveyed in the lower, middle, and high portions of the rivers to understand the direction of the drain, its status, and if it has a tendency to overflow or not, students were required to go along the tributaries and also seek information from the residents along the channel to be able to record the reliable data. Understanding the status of these river channels helps to analyze the situation of flooding in the area, tree planting actions, etc.

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OpenMap Development Tanzania

OpenMap Development Tanzania

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Using Open Data, Open Source, and maps to solve different socio-economic challenges.