Small holder farmers in Tanzania's Usangu Plains






Continuing on from the inequitable allocation of irrigation permits and access to water in South Africa, a similar instance of small holder farmers being marginalised by power governing bodies appears in the Usangu plains in Tanzania.

The Usangu wetlands lay upstream of the great Ruaha River. The wetland flows through the Ruaha national park and is a massive economic powerhouse for Tanzania.

The region has historically been used for rice farming, with the 1970s seeing significant irrigation expansion led by state sponsored Mbarali Rice Farm.

The river began to slowly diminish, primarily beginning with a loan from the African Development Bank that created a 3000ha private rice farm named 'Kapunga Rice Irrigation Project' in the Usangu wetland catchment region. The goal of this was to improve livelihoods of local farmers. However, with the Usangu catchment being upstream form the national park, it unfortunately had detrimental impacts on the environment that were poorly assessed prior to the implementation of the rice farm. The project completion report states: 'At the time of appraisal, environmental issues were not taken into consideration,' However, later understanding 'retrospectively' that it was necessary to do so. The most important impacts, effecting the entire Great Ruaha were as followed:

  1. Significant loss of wildlife habitats: forcing wildlife to retreat towards the north and east.
  2. Major hydrology disturbances: due to significant water flow of the Great Ruaha and Chimala rivers being diverted for irrigation purposes, the river beds are dry during the dry season.
  1. Heavy use of insecticides: used to protect the rice from pests, creating a burden on the immediate environment and groundwater further downstream affecting aquatic life.


Current access to water:

Previously, the upstream wetlands would supply the Great Ruaha with water accumulated from the rainy months. Irrigation today is still a significant feature in the Usangu, with the catchment now divided into 3 sections.


In the post-colonial period, state institutions became the most important actors, affirming their dominance by structurally controlling local institution. By controlling the arrangements for access to water, the outcomes for people and ecosystems were also determined.

Franks et.al describes the locus of power as 'poly-centric', due to a network of powerful individuals, often wealthy farmers with very large holdings dominating decisions. Legal arrangements are made to shape the access to water, by creating a single fee for the right to wet season water abstraction, as well as a judicial system to control the resolution of conflicts between citizens over water right. This is were inequitable outcomes may be observed, as often marginalised groups often are unsuccessful in the legal processes, due to a lack of resources. The power dynamics, are asserted by actors that 'reshape the government  arrangements for their benefits and to the exclusion of others'.

The case of the Usangu plains is interesting, as often it the  case that smallholder farmers are being marginalised by big institutions or organisations withholding power. This is partly the case, but most of the power is held by local, wealthy farmers. The voices of the influential figures are often more valued than smallholder famers, and can have negative outcomes for the ecosystems as a whole, but particularly in the downstream areas that host the poorest farmers. An example of this is when influential farmers opt for dry season irrigation, straining the already depleted resources. The most powerful farmers are found to be those with the largest holdings as well as being in close proximity to the offtake (an agreement between a producer of a resource and a buyer of a resource). Financial wealth, allied with considerable family networks allows some farmers preference in access to water in early stages of development. This echoes elements of the 'Harmon Doctorine', where watercourse diversion and abstraction, be it for irrigation in the case of the Usangu, is in self interest allowing an upstream riparian to freely utilize the water, without assessing consequence for downstream habitants.

The complexity of water allocation rights and management is enhanced by pluralistic nature of power as well as the ever decreasing water resources. To move forward, it is essential that the less powerful voices are heard to ensure the security of the farmers as well as the ecosystem.


For further information on the topic, an interesting podcast by Frances Cleaver, where she discusses the resource management in the Usangu Plains:

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