The vortex depth in an agitated vessel with pitched blade paddle impeller was measured under various impeller dimensions and baffled conditions. The vortex depth measured was correlated well by the combination of the correlations of the vortex depth for paddle impeller by Kamei et al. (1999) and of the power input for pitched blade paddle impeller by Hiraoka et al. (1997) under both non-baffled and baffled conditions.