IWRM4WASH Tanzania

Agroforestry is a sustainable solution against erosion and sedimentation (downstream). Sedimentation occurs due to severe soil erosion where soil washes off and enters the dam as sediment. This process of sedimentation, where sand and gravel accumulate, significantly reduces the storage capacity of the dam as the silt limits the space for water intake.

To deploy Agroforestry, World Waternet first uses the FarmTree tool method. This provides a simple digital interface for entering agronomic, financial and design details of an agroforestry system. Based on the entered parameters, the database will recommend the best suited trees for slope stabilisation, while also accounting for the economic potential the plants serve for local farmers. Combining water management with agriculture, forestry and the local economy, allows you to retain water better and for longer upstream. 

By integrating IWRM4WASH in the Mindu Dam Catchment Area, Morogoro, Tanzania, the programme can create a climate-proof system that ensures sustainable water management, improved WASH services, and increased resilience to climate change.