In Tanzania, Citizen Scientists Help Reduce Flood Risk with Soil Sampling

In Tanzania, Citizen Scientists Help Reduce Flood Risk with Soil Sampling


In Dar es Salaam, Tanzania soil erosion is
one of the major contributors to flooding. There is a lot of sediment that comes with
erosion, that is the reason we have flooding because the water now does not flow in the
normal rate to the sea. The poor people that live within the Msimbazi
valley are the ones who are the most vulnerable. Effective flood modelling and mitigation requires
accurate soil data. The city is using citizen science to create
a soil map. 16 local mappers
643 strategic sites 2752km2 mapped I am very, very proud to be one of the participants. We use the map, we use the link, to reach
to the place, and after we reach there we start to the dig the place, and afterward
we fill the information to the ODK “Open Data Kit”. After drying it, we weigh it, then we sieve
it, after sieving, we measure the soil weight, then we put it into the ODK. The team has recorded over 600 different soil
types. A complete soil map of the city is now informing
flood mitigation measures and better urban planning. It will be easier for them to know, like this
place is easily erodible. It helps in decision-making, this project
gives the right people the right data to make decisions. The information we get from the soil, will
help us to understand the morphology of the river, a very important tool for us on the
management of the area and also future land use planning. Urban resilience for a smart Tanzania
Urban resilience for a strong Tanzania Urban resilience for a secure Tanzania
Urban resilience for Tanzania

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    Video Transcript

    Caption:

    In Dar es Salaam, Tanzania soil erosion is one of the major contributors to flooding.

    Mussa Natty, Former Municipal Director – Urban Specialist: There is a lot of sediment that comes with erosion, that is the reason we have flooding because the water now does not flow in the normal rate to the sea. The poor people that live within the Msimbazi valley are the ones who are the most vulnerable.

    Caption:

    Effective flood modelling and mitigation requires accurate soil data.

    The city is using citizen science to create a soil map.

    16 local mappers

    643 strategic sites

    2752km2 mapped

    Sia Salonga, Soil Mapper: I am very, very proud to be one of the participants. We use the map, we use the link, to reach to the place, and after we reach there we start to the dig the place, and afterward we fill the information to the ODK “Open Data Kit”.

    Felister Tobias, Soil Mapper: After drying it, we weigh it, then we sieve it, after sieving, we measure the soil weight, then we put it into the ODK.

    Caption:

    The team has recorded over 600 different soil types.

    A complete soil map of the city is now informing flood mitigation measures and better urban planning.

    Sia Salonga, Soil Mapper: It will be easier for them to know, like this place is easily erodible.

    Hawa Adinani, Soil Mapper: It helps in decision-making, this project gives the right people the right data to make decisions.

    Mussa Natty, Former Municipal Director – Urban Specialist: The information we get from the soil, will help us to understand the morphology of the river, a very important tool for us on the management of the area and also future land use planning.

    Caption:

    Urban resilience for a smart Tanzania

    Urban resilience for a strong Tanzania

    Urban resilience for a secure Tanzania

    Urban resilience for Tanzania

    Logos:

    Tanzania Urban Resilience Programme

    World Bank Group

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