Why sand dams Sand dam FAQs Who builds the sand dams? For most of the areas we work in, it is the communities themselves that are responsible for the construction work. Our partners will provide skilled supervision and instruction, but the labour put towards sand dams comes from the communities. This aligns with one of our key values of providing communities with the tools to change their own lives, giving a hand up rather than a handout. In Lekurruki , northern Kenya, the community structure is very different to the other areas in which we work. As pastoralists, the Maasai there are semi-nomadic, moving with their herds. As such, we employ local labourers to help complete the sand dams. Click here to find out more about the impact of sand dam construction on local labourers. We do also run expeditions where you can get involved in constructing a sand dam. Read more about that here.