Silouhette of a fisherman at Lake Victoria Uganda

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Bridging science and citizen action to protect Uganda鈥檚 freshwaters: Dr. Hannington Ochieng

Dr. Hannington Ochieng has spent decades contributing to protecting Uganda鈥檚 lakes and rivers. Now, he is identifying citizen-led projects for UNESCO Green Citizens.

For National Geographic Explorer Dr. Hannington Ochieng, safeguarding lakes and rivers is not only scientific research鈥攊t鈥檚 a lifelong mission to ensure clean water for both ecosystems and people.

With a PhD in Environment and Natural Resources and over two decades of dedication to freshwater conservation, Dr. Ochieng spearheads rigorous monitoring systems to track water quality. But beyond data, he understands that the key to lasting change truly lies in the hands of local communities.

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We can鈥檛 just study water from a distance. The communities living by these lakes and rivers must be part of the solution.

Dr. Hannington Ochieng

Science in action for conservation

From Lake Victoria鈥攖he largest freshwater lake in Africa鈥攖hrough the Nile鈥檚 powerful currents connecting to Lake Kyoga and the quiet shores of Lake Albert, Dr. Ochieng has worked on the front lines of assessment and monitoring geared toward the protection of freshwater ecosystems. His expertise has been of value in environmental impact assessments for developmental projects, such as hydropower and oil projects, to ensure the sustainability of Uganda鈥檚 natural heritage. 

As a researcher and lecturer at Busitema University he also plays a key role in training the next generation of scientists. He mentors students, conducts field research, and works with fellow scientists to advance freshwater ecosystem conservation in Uganda and beyond. His extensive research contributions can be explored in his .

Through collaborations with global organisations such as the National Geographic Society, IDEA WILD, and UNESCO-IHE Fellowship Trust Fund, he has secured research grants that translate science into practical, community-driven solutions. Whether training local conservationists, advocating for riparian vegetation restoration, or supporting citizen-led cleanups, Dr. Ochieng ensures that scientific knowledge translates into action on the ground.

A new chapter with UNESCO Green Citizens

Now, as a Pathfinder for UNESCO Green Citizens, Dr. Ochieng is taking his mission further. His role is to identify citizen-led environmental projects that align with UNESCO鈥檚 vision for a sustainable future. Whether it鈥檚 a grassroots movement cleaning up riverbanks or an innovative project tackling plastic pollution, he is determined to spotlight local changemakers and connect them to global networks.

As the world faces growing water challenges, Dr. Ochieng鈥檚 work reminds us that true conservation is not just about policies or research papers鈥攊t鈥檚 about people. By combining science with local knowledge, he is not only protecting Uganda鈥檚 freshwater ecosystems but also empowering communities to become stewards of their own environment.

What is UNESCO Green Citizens?

This initiative connects local citizen solutions, UNESCO's scientific expertise, and the willingness of young people to engage in the fight against climate change. Learn more about these 150 innovative and duplicable projects, led by citizens, below.