Laboratory experiments concerning azimuthal jets in two-layer rotating systems in the absence and presence of bottom topography aligned along the jets have been conducted. The jets were forced by the selective withdrawal of fluid from the upper layer of a two-fluid system contained in a circular dishpan geometry. The principal parameters measured in the experiments were the jet Rossby number, Ro, and a stratification parameterF=r1/(λ1λ2)1/2wherer1is the radius of the circular disc used for the selective withdrawal (i.e.,r1is the approximate radius of curvature of the jet) and λ1,λ2are the internal Rossby radii of deformation in the upper and lower fluids, respectively.