Biodiversity assessment was conducted at Wassaniya Forest Reserve in Tangaza Local Government Area of Sokoto State (Figure 1). The study area was divided into four main plots purposively selected based on vegetation density and human interference. Three sample plots each with an area of 0.5ha were randomly selected and demarcated at each main plot, serving as the replicates. Point center quarter method was used in assessing the vegetation. Data collected include: distance from the center point, tree heights and diameter at breast height. In conclusion it was evident that some woody species were more established than others, some were taller, while others were higher in dominance than others. The well established species were not necessarily the indigenous; suggesting that introduction of exotic species (Khaya senegalensis) can be successful. We were opportune to learn the effects of human interference with regards to environmental degradation. Finally it was recommended that Government should revive forestry laws, more forest guards should be employed and must be empowered to enforce forest protection laws, establish more forest reserves so that more forest products can be harnessed.