projects

Nature-based solutions to combat erosion

Completed
Seedlings sprout alongside a small gully in an arid landscape.
One area of Nyarugusu refugee camp following planting. Photo: UNHCR Tanzania.
Programme
UNHCR Innovation Incubator
Fund
Environment and Climate Action Innovation Fund | Incubator
Start Date
Total Project Cost
USD 106,542.000
Country
Tanzania, United Republic of
Project Team
UNHCR Tanzania , Danish Refugee Council

Challenge

Environmental degradation has driven gully formation around Nyarugusu refugee camp, posing an immediate danger to Congolese and Burundian refugees. Up to 3m deep, the gullies increase the risk of further erosion and flash floods, threatening infrastructure and ecosystems.

Solution

UNHCR will replace the current approach to control erosion – costly stone-pitched gabions – with a community-led nature-based solution whereby refugees nurture barriers composed of various native species to support soil stabilization, prevent further erosion, and boost biodiversity.

Impact

Community members are trained on plant care to ensure longevity, and nurseries are established to grow plants for use to prevent gully formation. More than 2,700 households are expected to benefit directly, while the entire camp benefits from a safer, healthier environment.

Project impact

445
refugees & host community members trained to lead revegetation work
80%
of planted specimens surviving after 6 months thanks to community-led care
17
refugees already replicating the barriers around their homes & vegetable gardens

Other information

The revegetation around gullies was combined with site improvements; 11 crossings were installed over deep gullies to support safe passage. This created both protective barriers to avoid disruption to the growing seedlings, as well as ensuring smoother mobility.

Refugee feedback indicates a greater ability to move safely around the camp and better preparedness for potential risks in the rainy season.