Rainwater Harvesting (RWH)

Rainwater Harvesting (RWH)

Uganda enjoys an average annual rainfall of 1500mm with extreme highs experienced over and around Lake victoria. With exception of Karamoja region, most parts of the country experience at least two seasons of rainfall- bimodal rainfall pattern and this makes the potential for rainwater harvesting viable. To harness the benefits of the plenty rainwater in the country, rainwater harvesting is being promoted in water stressed areas, drought prone and flood affected areas. Two pilots are currently going on using two respective approaches. In Bududa, Katakwi, Apac and Otuke district promotions are funded ADB to enhance community adaptation and resilience to climate change. In the districts of Namayingo, Kaliro, Mukono and Sheema, a promotion pilot going on is aimed at scaling up rainwater harvesting using revolving fund.

Technology menu for rainwater harvesting

Technologies for storage of rainwater include: the Ferro cement tank, plastic tanks, stainless steel tanks, colligated iron sheet tanks. All these are constructed above the ground. Brick tanks can be constructed either above or underground and the EMAS tank is an underground tank. These tanks can be constructed to varying sizes depending on the technology, target water catchment area and demand. Water from underground tanks can be lifted using either manual devices such as the EMAS pump and rope pump or solar pump. It can also be lifted using an electric pump (Append a rainwater harvesting catalogue).