The population density and distribution of desertdwelling giraffes was estimated in three study areas in the Hoanib River catchment, northwestern Namibia. Giraffe population densities (0.01 giraffe/km2) were equal to the lowest recorded in Africa with population numbers fluctuating over past decades. Sex ratios, herd sizes and age categories differed between all the study areas, while a weak correlation (r2 = 0.66, P < 0.001) in giraffe aggregation and the hot-dry season was observed in the Ombonde River. Seasonal movement and use of the riparian environments varied, with large fluctuations observed in the east of the catchment, while the hot-dry season influx and use in the riparian woodland coincided with Faidherbia albida podding. Keywords: Giraffa camelopardalis angolensis, Population structure, Seasonal movement.