The northern regions of Ghana are characterised by a unimodal rainfall pattern, making rain-fed agriculture a difficult and precarious enterprise. Small-scale dam construction, capturing flash floods in the wet season for dry-season irrigation offers a proven remedy. This study examines the state, impact, and sustainability of the Vunania electoral area dam, constructed with World Bank funding and managed by the Ghana Irrigation Development Authority (GIDA). Using a qualitative research approach comprising site visits, focus group discussions, expert interviews, and field observation, the study finds that the Vunania reservoir is a viable, community-valued intervention with significant potential across irrigation farming, aquaculture, livestock watering, and environmental amenity. However, three construction-related deficiencies — groundwater seepage behind the embankment, a low embankment relative to the high spillway elevation, and incomplete and uneven canal work — threaten the dam's long-term utility if left unaddressed. The paper argues that properly designed, well-constructed, and community-consulted small-scale dams are a critical instrument for agricultural productivity, poverty reduction, and youth retention in northern Ghana.

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Keywords

Reservoirs; Small-scale dam; Irrigation farming; Vunania; Kassena Nankana Municipality; Northern Ghana; Agricultural sustainability.